745 lines
24 KiB
Ruby
745 lines
24 KiB
Ruby
# frozen_string_literal: true
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require_dependency 'distributed_cache'
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class Category < ActiveRecord::Base
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self.ignored_columns = %w{
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uploaded_meta_id
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}
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include Searchable
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include Positionable
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include HasCustomFields
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include CategoryHashtag
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include AnonCacheInvalidator
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include HasDestroyedWebHook
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REQUIRE_TOPIC_APPROVAL = 'require_topic_approval'
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REQUIRE_REPLY_APPROVAL = 'require_reply_approval'
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NUM_AUTO_BUMP_DAILY = 'num_auto_bump_daily'
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register_custom_field_type(REQUIRE_TOPIC_APPROVAL, :boolean)
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register_custom_field_type(REQUIRE_REPLY_APPROVAL, :boolean)
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register_custom_field_type(NUM_AUTO_BUMP_DAILY, :integer)
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belongs_to :topic, dependent: :destroy
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belongs_to :topic_only_relative_url,
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-> { select "id, title, slug" },
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class_name: "Topic",
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foreign_key: "topic_id"
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belongs_to :user
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belongs_to :latest_post, class_name: "Post"
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belongs_to :uploaded_logo, class_name: "Upload"
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belongs_to :uploaded_background, class_name: "Upload"
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has_many :topics
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has_many :category_users
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has_many :category_featured_topics
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has_many :featured_topics, through: :category_featured_topics, source: :topic
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has_many :category_groups, dependent: :destroy
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has_many :groups, through: :category_groups
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has_and_belongs_to_many :web_hooks
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validates :user_id, presence: true
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validates :name, if: Proc.new { |c| c.new_record? || c.will_save_change_to_name? },
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presence: true,
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uniqueness: { scope: :parent_category_id, case_sensitive: false },
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length: { in: 1..50 }
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validates :num_featured_topics, numericality: { only_integer: true, greater_than: 0 }
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validates :search_priority, inclusion: { in: Searchable::PRIORITIES.values }
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validate :parent_category_validator
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validate :email_in_validator
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validate :ensure_slug
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validate :permissions_compatibility_validator
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validates :auto_close_hours, numericality: { greater_than: 0, less_than_or_equal_to: 87600 }, allow_nil: true
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after_create :create_category_definition
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before_save :apply_permissions
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before_save :downcase_email
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before_save :downcase_name
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after_save :publish_discourse_stylesheet
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after_save :publish_category
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after_save :reset_topic_ids_cache
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after_save :clear_url_cache
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after_save :index_search
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after_destroy :reset_topic_ids_cache
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after_destroy :publish_category_deletion
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after_destroy :remove_site_settings
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after_create :delete_category_permalink
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after_update :rename_category_definition, if: :saved_change_to_name?
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after_update :create_category_permalink, if: :saved_change_to_slug?
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after_commit :trigger_category_created_event, on: :create
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after_commit :trigger_category_updated_event, on: :update
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after_commit :trigger_category_destroyed_event, on: :destroy
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belongs_to :parent_category, class_name: 'Category'
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has_many :subcategories, class_name: 'Category', foreign_key: 'parent_category_id'
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has_many :category_tags, dependent: :destroy
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has_many :tags, through: :category_tags
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has_many :category_tag_groups, dependent: :destroy
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has_many :tag_groups, through: :category_tag_groups
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scope :latest, -> { order('topic_count DESC') }
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scope :secured, -> (guardian = nil) {
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ids = guardian.secure_category_ids if guardian
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if ids.present?
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where("NOT categories.read_restricted OR categories.id IN (:cats)", cats: ids).references(:categories)
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else
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where("NOT categories.read_restricted").references(:categories)
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end
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}
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TOPIC_CREATION_PERMISSIONS ||= [:full]
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POST_CREATION_PERMISSIONS ||= [:create_post, :full]
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scope :topic_create_allowed, -> (guardian) { scoped_to_permissions(guardian, TOPIC_CREATION_PERMISSIONS) }
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scope :post_create_allowed, -> (guardian) { scoped_to_permissions(guardian, POST_CREATION_PERMISSIONS) }
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delegate :post_template, to: 'self.class'
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# permission is just used by serialization
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# we may consider wrapping this in another spot
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attr_accessor :displayable_topics, :permission, :subcategory_ids, :notification_level, :has_children
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# Allows us to skip creating the category definition topic in tests.
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attr_accessor :skip_category_definition
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@topic_id_cache = DistributedCache.new('category_topic_ids')
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def self.topic_ids
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@topic_id_cache['ids'] || reset_topic_ids_cache
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end
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def self.reset_topic_ids_cache
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@topic_id_cache['ids'] = Set.new(Category.pluck(:topic_id).compact)
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end
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def reset_topic_ids_cache
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Category.reset_topic_ids_cache
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end
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def self.scoped_to_permissions(guardian, permission_types)
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if guardian.try(:is_admin?)
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all
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elsif !guardian || guardian.anonymous?
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if permission_types.include?(:readonly)
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where("NOT categories.read_restricted")
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else
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where("1 = 0")
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end
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else
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permissions = permission_types.map { |p| CategoryGroup.permission_types[p] }
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where("(:staged AND LENGTH(COALESCE(email_in, '')) > 0 AND email_in_allow_strangers)
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OR categories.id NOT IN (SELECT category_id FROM category_groups)
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OR categories.id IN (
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SELECT category_id
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FROM category_groups
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WHERE permission_type IN (:permissions)
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AND (group_id = :everyone OR group_id IN (SELECT group_id FROM group_users WHERE user_id = :user_id))
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)",
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staged: guardian.is_staged?,
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permissions: permissions,
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user_id: guardian.user.id,
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everyone: Group[:everyone].id)
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end
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end
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def self.update_stats
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topics_with_post_count = Topic
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.select("topics.category_id, COUNT(*) topic_count, SUM(topics.posts_count) post_count")
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.where("topics.id NOT IN (select cc.topic_id from categories cc WHERE topic_id IS NOT NULL)")
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.group("topics.category_id")
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.visible.to_sql
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DB.exec <<~SQL
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UPDATE categories c
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SET topic_count = x.topic_count,
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post_count = x.post_count
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FROM (#{topics_with_post_count}) x
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WHERE x.category_id = c.id
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AND (c.topic_count <> x.topic_count OR c.post_count <> x.post_count)
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SQL
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# Yes, there are a lot of queries happening below.
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# Performing a lot of queries is actually faster than using one big update
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# statement with sub-selects on large databases with many categories,
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# topics, and posts.
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#
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# The old method with the one query is here:
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# https://github.com/discourse/discourse/blob/5f34a621b5416a53a2e79a145e927fca7d5471e8/app/models/category.rb
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#
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# If you refactor this, test performance on a large database.
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Category.all.each do |c|
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topics = c.topics.visible
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topics = topics.where(['topics.id <> ?', c.topic_id]) if c.topic_id
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c.topics_year = topics.created_since(1.year.ago).count
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c.topics_month = topics.created_since(1.month.ago).count
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c.topics_week = topics.created_since(1.week.ago).count
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c.topics_day = topics.created_since(1.day.ago).count
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posts = c.visible_posts
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c.posts_year = posts.created_since(1.year.ago).count
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c.posts_month = posts.created_since(1.month.ago).count
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c.posts_week = posts.created_since(1.week.ago).count
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c.posts_day = posts.created_since(1.day.ago).count
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c.save if c.changed?
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end
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end
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def visible_posts
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query = Post.joins(:topic)
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.where(['topics.category_id = ?', self.id])
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.where('topics.visible = true')
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.where('posts.deleted_at IS NULL')
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.where('posts.user_deleted = false')
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self.topic_id ? query.where(['topics.id <> ?', self.topic_id]) : query
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end
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# Internal: Generate the text of post prompting to enter category description.
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def self.post_template
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I18n.t("category.post_template", replace_paragraph: I18n.t("category.replace_paragraph"))
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end
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def create_category_definition
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return if skip_category_definition
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t = Topic.new(title: I18n.t("category.topic_prefix", category: name), user: user, pinned_at: Time.now, category_id: id)
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t.skip_callbacks = true
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t.ignore_category_auto_close = true
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t.delete_topic_timer(TopicTimer.types[:close])
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t.save!(validate: false)
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update_column(:topic_id, t.id)
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t.posts.create(raw: description || post_template, user: user)
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end
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def topic_url
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if has_attribute?("topic_slug")
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Topic.relative_url(topic_id, read_attribute(:topic_slug))
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else
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topic_only_relative_url.try(:relative_url)
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end
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end
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def description_text
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return nil unless self.description
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@@cache ||= LruRedux::ThreadSafeCache.new(1000)
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@@cache.getset(self.description) do
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Nokogiri::HTML.fragment(self.description).text.strip.html_safe
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end
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end
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def duplicate_slug?
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Category.where(slug: self.slug, parent_category_id: parent_category_id).where.not(id: id).any?
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end
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def ensure_slug
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return unless name.present?
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self.name.strip!
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if slug.present?
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# santized custom slug
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self.slug = Slug.sanitize(slug)
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errors.add(:slug, 'is already in use') if duplicate_slug?
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else
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# auto slug
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self.slug = Slug.for(name, '')
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self.slug = '' if duplicate_slug?
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end
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# only allow to use category itself id. new_record doesn't have a id.
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unless new_record?
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match_id = /^(\d+)-category/.match(self.slug)
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errors.add(:slug, :invalid) if match_id && match_id[1] && match_id[1] != self.id.to_s
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end
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end
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def slug_for_url
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slug.present? ? self.slug : "#{self.id}-category"
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end
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def publish_category
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group_ids = self.groups.pluck(:id) if self.read_restricted
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MessageBus.publish('/categories', { categories: ActiveModel::ArraySerializer.new([self]).as_json }, group_ids: group_ids)
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end
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def remove_site_settings
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SiteSetting.all_settings.each do |s|
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if s[:type] == 'category' && s[:value].to_i == self.id
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SiteSetting.send("#{s[:setting]}=", '')
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end
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end
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end
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def publish_category_deletion
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MessageBus.publish('/categories', deleted_categories: [self.id])
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end
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def parent_category_validator
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if parent_category_id
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errors.add(:base, I18n.t("category.errors.self_parent")) if parent_category_id == id
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errors.add(:base, I18n.t("category.errors.uncategorized_parent")) if uncategorized?
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grandfather_id = Category.where(id: parent_category_id).pluck(:parent_category_id).first
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errors.add(:base, I18n.t("category.errors.depth")) if grandfather_id
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end
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end
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def group_names=(names)
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# this line bothers me, destroying in AR can not seem to be queued, thinking of extending it
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category_groups.destroy_all unless new_record?
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ids = Group.where(name: names.split(",")).pluck(:id)
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ids.each do |id|
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category_groups.build(group_id: id)
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end
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end
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# will reset permission on a topic to a particular
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# set.
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#
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# Available permissions are, :full, :create_post, :readonly
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# hash can be:
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#
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# :everyone => :full - everyone has everything
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# :everyone => :readonly, :staff => :full
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# 7 => 1 # you can pass a group_id and permission id
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def set_permissions(permissions)
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self.read_restricted, @permissions = Category.resolve_permissions(permissions)
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# Ideally we can just call .clear here, but it runs SQL, we only want to run it
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# on save.
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end
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def permissions=(permissions)
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set_permissions(permissions)
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end
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def permissions_params
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hash = {}
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category_groups.includes(:group).each do |category_group|
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if category_group.group.present?
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hash[category_group.group_name] = category_group.permission_type
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end
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end
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hash
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end
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def apply_permissions
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if @permissions
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category_groups.destroy_all
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@permissions.each do |group_id, permission_type|
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category_groups.build(group_id: group_id, permission_type: permission_type)
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end
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@permissions = nil
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end
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end
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def self.resolve_permissions(permissions)
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read_restricted = true
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everyone = Group::AUTO_GROUPS[:everyone]
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full = CategoryGroup.permission_types[:full]
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mapped = permissions.map do |group, permission|
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group_id = Group.group_id_from_param(group)
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permission = CategoryGroup.permission_types[permission] unless permission.is_a?(Integer)
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[group_id, permission]
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end
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mapped.each do |group, permission|
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if group == everyone && permission == full
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return [false, []]
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end
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read_restricted = false if group == everyone
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end
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[read_restricted, mapped]
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end
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def require_topic_approval?
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custom_fields[REQUIRE_TOPIC_APPROVAL]
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end
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def require_reply_approval?
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custom_fields[REQUIRE_REPLY_APPROVAL]
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end
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def num_auto_bump_daily
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custom_fields[NUM_AUTO_BUMP_DAILY]
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end
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def num_auto_bump_daily=(v)
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custom_fields[NUM_AUTO_BUMP_DAILY] = v
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end
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def auto_bump_limiter
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return nil if num_auto_bump_daily.to_i == 0
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RateLimiter.new(nil, "auto_bump_limit_#{self.id}", 1, 86400 / num_auto_bump_daily.to_i)
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end
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def clear_auto_bump_cache!
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auto_bump_limiter&.clear!
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end
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def self.auto_bump_topic!
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bumped = false
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auto_bumps = CategoryCustomField
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.where(name: Category::NUM_AUTO_BUMP_DAILY)
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.where('NULLIF(value, \'\')::int > 0')
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.pluck(:category_id)
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if (auto_bumps.length > 0)
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auto_bumps.shuffle.each do |category_id|
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bumped = Category.find_by(id: category_id)&.auto_bump_topic!
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break if bumped
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end
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end
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bumped
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end
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# will automatically bump a single topic
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# if number of automatically bumped topics is smaller than threshold
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def auto_bump_topic!
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return false if num_auto_bump_daily.to_i == 0
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limiter = auto_bump_limiter
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return false if !limiter.can_perform?
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filters = []
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DiscourseEvent.trigger(:filter_auto_bump_topics, self, filters)
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relation = Topic
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if filters.length > 0
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filters.each do |filter|
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relation = filter.call(relation)
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end
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end
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topic = relation
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.visible
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.listable_topics
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.where(category_id: self.id)
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.where('id <> ?', self.topic_id)
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.where('bumped_at < ?', 1.day.ago)
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.where('pinned_at IS NULL AND NOT closed AND NOT archived')
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.order('bumped_at ASC')
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.limit(1)
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.first
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if topic
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topic.add_small_action(Discourse.system_user, "autobumped", nil, bump: true)
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limiter.performed!
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true
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else
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false
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end
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end
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def allowed_tags=(tag_names_arg)
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DiscourseTagging.add_or_create_tags_by_name(self, tag_names_arg, unlimited: true)
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end
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def allowed_tag_groups=(group_names)
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self.tag_groups = TagGroup.where(name: group_names).all.to_a
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end
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def downcase_email
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self.email_in = (email_in || "").strip.downcase.presence
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end
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def email_in_validator
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return if self.email_in.blank?
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email_in.split("|").each do |email|
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escaped = Rack::Utils.escape_html(email)
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if !Email.is_valid?(email)
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self.errors.add(:base, I18n.t('category.errors.invalid_email_in', email: escaped))
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elsif group = Group.find_by_email(email)
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self.errors.add(:base, I18n.t('category.errors.email_already_used_in_group', email: escaped, group_name: Rack::Utils.escape_html(group.name)))
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elsif category = Category.where.not(id: self.id).find_by_email(email)
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self.errors.add(:base, I18n.t('category.errors.email_already_used_in_category', email: escaped, category_name: Rack::Utils.escape_html(category.name)))
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end
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end
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end
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def downcase_name
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self.name_lower = name.downcase if self.name
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end
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def visible_group_names(user)
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self.groups.visible_groups(user)
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end
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def secure_group_ids
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if self.read_restricted?
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groups.pluck("groups.id")
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end
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end
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def update_latest
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latest_post_id = Post
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.order("posts.created_at desc")
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|
.where("NOT hidden")
|
|
.joins("join topics on topics.id = topic_id")
|
|
.where("topics.category_id = :id", id: self.id)
|
|
.limit(1)
|
|
.pluck("posts.id")
|
|
.first
|
|
|
|
latest_topic_id = Topic
|
|
.order("topics.created_at desc")
|
|
.where("visible")
|
|
.where("topics.category_id = :id", id: self.id)
|
|
.limit(1)
|
|
.pluck("topics.id")
|
|
.first
|
|
|
|
self.update_attributes(latest_topic_id: latest_topic_id, latest_post_id: latest_post_id)
|
|
end
|
|
|
|
def self.query_parent_category(parent_slug)
|
|
self.where(slug: parent_slug, parent_category_id: nil).pluck(:id).first ||
|
|
self.where(id: parent_slug.to_i).pluck(:id).first
|
|
end
|
|
|
|
def self.query_category(slug_or_id, parent_category_id)
|
|
self.where(slug: slug_or_id, parent_category_id: parent_category_id).first ||
|
|
self.where(id: slug_or_id.to_i, parent_category_id: parent_category_id).first
|
|
end
|
|
|
|
def self.find_by_email(email)
|
|
self.where("string_to_array(email_in, '|') @> ARRAY[?]", Email.downcase(email)).first
|
|
end
|
|
|
|
def has_children?
|
|
@has_children ||= (id && Category.where(parent_category_id: id).exists?) ? :true : :false
|
|
@has_children == :true
|
|
end
|
|
|
|
def uncategorized?
|
|
id == SiteSetting.uncategorized_category_id
|
|
end
|
|
|
|
@@url_cache = DistributedCache.new('category_url')
|
|
|
|
def clear_url_cache
|
|
@@url_cache.clear
|
|
end
|
|
|
|
def full_slug(separator = "-")
|
|
start_idx = "#{Discourse.base_uri}/c/".length
|
|
url[start_idx..-1].gsub("/", separator)
|
|
end
|
|
|
|
def url
|
|
url = @@url_cache[self.id]
|
|
unless url
|
|
url = +"#{Discourse.base_uri}/c"
|
|
url << "/#{parent_category.slug}" if parent_category_id
|
|
url << "/#{slug}"
|
|
@@url_cache[self.id] = -url
|
|
end
|
|
|
|
url
|
|
end
|
|
|
|
def url_with_id
|
|
self.parent_category ? "#{url}/#{self.id}" : "#{Discourse.base_uri}/c/#{self.id}-#{self.slug}"
|
|
end
|
|
|
|
# If the name changes, try and update the category definition topic too if it's
|
|
# an exact match
|
|
def rename_category_definition
|
|
old_name = saved_changes.transform_values(&:first)["name"]
|
|
return unless topic.present?
|
|
if topic.title == I18n.t("category.topic_prefix", category: old_name)
|
|
topic.update_attribute(:title, I18n.t("category.topic_prefix", category: name))
|
|
end
|
|
end
|
|
|
|
def create_category_permalink
|
|
old_slug = saved_changes.transform_values(&:first)["slug"]
|
|
url = +"#{Discourse.base_uri}/c"
|
|
url << "/#{parent_category.slug}" if parent_category_id
|
|
url << "/#{old_slug}"
|
|
url = Permalink.normalize_url(url)
|
|
|
|
if Permalink.where(url: url).exists?
|
|
Permalink.where(url: url).update_all(category_id: id)
|
|
else
|
|
Permalink.create(url: url, category_id: id)
|
|
end
|
|
end
|
|
|
|
def delete_category_permalink
|
|
if self.parent_category
|
|
permalink = Permalink.find_by_url("c/#{self.parent_category.slug}/#{slug}")
|
|
else
|
|
permalink = Permalink.find_by_url("c/#{slug}")
|
|
end
|
|
permalink.destroy if permalink
|
|
end
|
|
|
|
def publish_discourse_stylesheet
|
|
Stylesheet::Manager.cache.clear
|
|
end
|
|
|
|
def index_search
|
|
SearchIndexer.index(self)
|
|
end
|
|
|
|
def self.find_by_slug(category_slug, parent_category_slug = nil)
|
|
if parent_category_slug
|
|
parent_category_id = self.where(slug: parent_category_slug, parent_category_id: nil).pluck(:id).first
|
|
self.where(slug: category_slug, parent_category_id: parent_category_id).first
|
|
else
|
|
self.where(slug: category_slug, parent_category_id: nil).first
|
|
end
|
|
end
|
|
|
|
def subcategory_list_includes_topics?
|
|
subcategory_list_style.end_with?("with_featured_topics")
|
|
end
|
|
|
|
%i{
|
|
category_created
|
|
category_updated
|
|
category_destroyed
|
|
}.each do |event|
|
|
define_method("trigger_#{event}_event") do
|
|
DiscourseEvent.trigger(event, self)
|
|
true
|
|
end
|
|
end
|
|
|
|
def permissions_compatibility_validator
|
|
# when saving subcategories
|
|
if @permissions && parent_category_id.present?
|
|
return if parent_category.category_groups.empty?
|
|
|
|
parent_permissions = parent_category.category_groups.pluck(:group_id, :permission_type)
|
|
child_permissions = @permissions.empty? ? [[Group[:everyone].id, CategoryGroup.permission_types[:full]]] : @permissions
|
|
check_permissions_compatibility(parent_permissions, child_permissions)
|
|
|
|
# when saving parent category
|
|
elsif @permissions && subcategories.present?
|
|
return if @permissions.empty?
|
|
|
|
parent_permissions = @permissions
|
|
child_permissions = subcategories_permissions.uniq
|
|
|
|
check_permissions_compatibility(parent_permissions, child_permissions)
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def check_permissions_compatibility(parent_permissions, child_permissions)
|
|
parent_groups = parent_permissions.map(&:first)
|
|
|
|
return if parent_groups.include?(Group[:everyone].id)
|
|
|
|
child_groups = child_permissions.map(&:first)
|
|
only_subcategory_groups = child_groups - parent_groups
|
|
|
|
if only_subcategory_groups.present?
|
|
group_names = Group.where(id: only_subcategory_groups).pluck(:name).join(", ")
|
|
errors.add(:base, I18n.t("category.errors.permission_conflict", group_names: group_names))
|
|
end
|
|
end
|
|
|
|
def subcategories_permissions
|
|
CategoryGroup.joins(:category)
|
|
.where(['categories.parent_category_id = ?', self.id])
|
|
.pluck(:group_id, :permission_type)
|
|
.uniq
|
|
end
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: categories
|
|
#
|
|
# id :integer not null, primary key
|
|
# name :string(50) not null
|
|
# color :string(6) default("0088CC"), not null
|
|
# topic_id :integer
|
|
# topic_count :integer default(0), not null
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
# user_id :integer not null
|
|
# topics_year :integer default(0)
|
|
# topics_month :integer default(0)
|
|
# topics_week :integer default(0)
|
|
# slug :string not null
|
|
# description :text
|
|
# text_color :string(6) default("FFFFFF"), not null
|
|
# read_restricted :boolean default(FALSE), not null
|
|
# auto_close_hours :float
|
|
# post_count :integer default(0), not null
|
|
# latest_post_id :integer
|
|
# latest_topic_id :integer
|
|
# position :integer
|
|
# parent_category_id :integer
|
|
# posts_year :integer default(0)
|
|
# posts_month :integer default(0)
|
|
# posts_week :integer default(0)
|
|
# email_in :string
|
|
# email_in_allow_strangers :boolean default(FALSE)
|
|
# topics_day :integer default(0)
|
|
# posts_day :integer default(0)
|
|
# allow_badges :boolean default(TRUE), not null
|
|
# name_lower :string(50) not null
|
|
# auto_close_based_on_last_post :boolean default(FALSE)
|
|
# topic_template :text
|
|
# contains_messages :boolean
|
|
# sort_order :string
|
|
# sort_ascending :boolean
|
|
# uploaded_logo_id :integer
|
|
# uploaded_background_id :integer
|
|
# topic_featured_link_allowed :boolean default(TRUE)
|
|
# all_topics_wiki :boolean default(FALSE), not null
|
|
# show_subcategory_list :boolean default(FALSE)
|
|
# num_featured_topics :integer default(3)
|
|
# default_view :string(50)
|
|
# subcategory_list_style :string(50) default("rows_with_featured_topics")
|
|
# default_top_period :string(20) default("all")
|
|
# mailinglist_mirror :boolean default(FALSE), not null
|
|
# suppress_from_latest :boolean default(FALSE)
|
|
# minimum_required_tags :integer default(0), not null
|
|
# navigate_to_first_post_after_read :boolean default(FALSE), not null
|
|
# search_priority :integer default(0)
|
|
# allow_global_tags :boolean default(FALSE), not null
|
|
#
|
|
# Indexes
|
|
#
|
|
# index_categories_on_email_in (email_in) UNIQUE
|
|
# index_categories_on_search_priority (search_priority)
|
|
# index_categories_on_topic_count (topic_count)
|
|
# unique_index_categories_on_name (COALESCE(parent_category_id, '-1'::integer), name) UNIQUE
|
|
#
|