89 lines
2.9 KiB
Ruby
89 lines
2.9 KiB
Ruby
class Category < ActiveRecord::Base
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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",
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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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has_many :topics
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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_featured_users
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has_many :featured_users, through: :category_featured_users, source: :user
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validates :user_id, presence: true
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validates :name, presence: true, uniqueness: true, length: { in: 1..50 }
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validate :uncategorized_validator
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before_validation :ensure_slug
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after_save :invalidate_site_cache
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after_create :create_category_definition
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after_destroy :invalidate_site_cache
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scope :latest, ->{ order('topic_count desc') }
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delegate :post_template, to: 'self.class'
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def create_category_definition
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create_topic!(title: I18n.t("category.topic_prefix", category: name), user: user, pinned_at: Time.now)
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update_column(:topic_id, topic.id)
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topic.update_column(:category_id, id)
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topic.posts.create(raw: post_template, user: user)
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end
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def topic_url
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topic_only_relative_url.try(:relative_url)
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end
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def ensure_slug
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if name.present?
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self.slug = Slug.for(name)
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# If a category with that slug already exists, set the slug to nil so the category can be found
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# another way.
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category = Category.where(slug: self.slug)
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category = category.where("id != ?", id) if id.present?
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self.slug = '' if category.exists?
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end
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end
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# Categories are cached in the site json, so the caches need to be
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# invalidated whenever the category changes.
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def invalidate_site_cache
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Site.invalidate_cache
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end
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def uncategorized_validator
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errors.add(:name, I18n.t(:is_reserved)) if name == SiteSetting.uncategorized_name
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errors.add(:slug, I18n.t(:is_reserved)) if slug == SiteSetting.uncategorized_name
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end
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# Internal: Update category stats: # of topics in past year, month, week for
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# all categories.
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def self.update_stats
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topics = Topic
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.select("COUNT(*)")
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.where("topics.category_id = categories.id")
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.where("categories.topic_id <> topics.id")
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.visible
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topic_count = topics.to_sql
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topics_year = topics.created_since(1.year.ago).to_sql
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topics_month = topics.created_since(1.month.ago).to_sql
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topics_week = topics.created_since(1.week.ago).to_sql
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Category.update_all("topic_count = (#{topic_count}),
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topics_year = (#{topics_year}),
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topics_month = (#{topics_month}),
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topics_week = (#{topics_week})")
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end
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# Internal: Generate the text of post prompting to enter category
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# 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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end
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