discourse/app/serializers/topic_view_serializer.rb

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require_dependency 'pinned_check'
require_dependency 'new_post_manager'
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class TopicViewSerializer < ApplicationSerializer
include PostStreamSerializerMixin
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include ApplicationHelper
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def self.attributes_from_topic(*list)
[list].flatten.each do |attribute|
attributes(attribute)
class_eval %{def #{attribute}
object.topic.#{attribute}
end}
end
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end
attributes_from_topic :id,
:title,
:fancy_title,
:posts_count,
:created_at,
:views,
:reply_count,
:participant_count,
:like_count,
:last_posted_at,
:visible,
:closed,
:archived,
:has_summary,
:archetype,
:slug,
:category_id,
:word_count,
:deleted_at,
:pending_posts_count,
:user_id,
:pm_with_non_human_user?
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attributes :draft,
:draft_key,
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:draft_sequence,
:posted,
:unpinned,
:pinned_globally,
:pinned, # Is topic pinned and viewer hasn't cleared the pin?
:pinned_at, # Ignores clear pin
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:pinned_until,
:details,
:highest_post_number,
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:last_read_post_number,
:last_read_post_id,
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:deleted_by,
:has_deleted,
:actions_summary,
:expandable_first_post,
:is_warning,
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:chunk_size,
:bookmarked,
:message_archived,
:tags,
:featured_link,
:topic_timer,
:unicode_title,
:message_bus_last_id
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# TODO: Split off into proper object / serializer
def details
topic = object.topic
result = {
created_by: BasicUserSerializer.new(topic.user, scope: scope, root: false),
last_poster: BasicUserSerializer.new(topic.last_poster, scope: scope, root: false)
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}
if private_message?(topic)
allowed_user_ids = Set.new
result[:allowed_groups] = object.topic.allowed_groups.map do |group|
allowed_user_ids.merge(GroupUser.where(group: group).pluck(:user_id))
BasicGroupSerializer.new(group, scope: scope, root: false)
end
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result[:allowed_users] = object.topic.allowed_users.select do |user|
!allowed_user_ids.include?(user.id)
end.map do |user|
BasicUserSerializer.new(user, scope: scope, root: false)
end
end
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if object.post_counts_by_user.present?
result[:participants] = object.post_counts_by_user.map do |pc|
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TopicPostCountSerializer.new({ user: object.participants[pc[0]], post_count: pc[1] }, scope: scope, root: false)
end
end
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if object.suggested_topics.try(:topics).present?
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result[:suggested_topics] = object.suggested_topics.topics.map do |t|
SuggestedTopicSerializer.new(t, scope: scope, root: false)
end
end
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if object.links.present?
result[:links] = object.links.map do |user|
TopicLinkSerializer.new(user, scope: scope, root: false)
end
end
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if has_topic_user?
result[:notification_level] = object.topic_user.notification_level
result[:notifications_reason_id] = object.topic_user.notifications_reason_id
else
result[:notification_level] = TopicUser.notification_levels[:regular]
end
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result[:can_move_posts] = true if scope.can_move_posts?(object.topic)
result[:can_edit] = true if scope.can_edit?(object.topic)
result[:can_delete] = true if scope.can_delete?(object.topic)
result[:can_recover] = true if scope.can_recover_topic?(object.topic)
result[:can_remove_allowed_users] = true if scope.can_remove_allowed_users?(object.topic)
result[:can_invite_to] = true if scope.can_invite_to?(object.topic)
result[:can_invite_via_email] = true if scope.can_invite_via_email?(object.topic)
result[:can_create_post] = true if scope.can_create?(Post, object.topic)
result[:can_reply_as_new_topic] = true if scope.can_reply_as_new_topic?(object.topic)
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result[:can_flag_topic] = actions_summary.any? { |a| a[:can_act] }
result
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end
def message_bus_last_id
object.message_bus_last_id
end
def chunk_size
object.chunk_size
end
def is_warning
private_message?(object.topic) && object.topic.subtype == TopicSubtype.moderator_warning
end
def include_is_warning?
is_warning
end
def draft
object.draft
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end
def draft_key
object.draft_key
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end
def draft_sequence
object.draft_sequence
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end
def include_message_archived?
private_message?(object.topic)
end
def message_archived
object.topic.message_archived?(scope.user)
end
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def deleted_by
BasicUserSerializer.new(object.topic.deleted_by, root: false).as_json
end
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# Topic user stuff
def has_topic_user?
object.topic_user.present?
end
def highest_post_number
object.highest_post_number
end
def last_read_post_id
return nil unless object.filtered_post_stream && last_read_post_number
object.filtered_post_stream.each do |ps|
return ps[0] if ps[1] === last_read_post_number
end
end
alias_method :include_last_read_post_id?, :has_topic_user?
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def last_read_post_number
@last_read_post_number ||= object.topic_user.last_read_post_number
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end
alias_method :include_last_read_post_number?, :has_topic_user?
def posted
object.topic_user.posted?
end
alias_method :include_posted?, :has_topic_user?
def pinned_globally
object.topic.pinned_globally
end
def pinned
PinnedCheck.pinned?(object.topic, object.topic_user)
end
def unpinned
PinnedCheck.unpinned?(object.topic, object.topic_user)
end
def pinned_at
object.topic.pinned_at
end
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def pinned_until
object.topic.pinned_until
end
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def actions_summary
result = []
return [] unless post = object.posts.try(:first)
PostActionType.topic_flag_types.each do |sym, id|
result << { id: id,
count: 0,
hidden: false,
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can_act: scope.post_can_act?(post, sym) }
# TODO: other keys? :can_defer_flags, :acted, :can_undo
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end
result
end
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def has_deleted
object.has_deleted?
end
def include_has_deleted?
object.guardian.can_see_deleted_posts?
end
def expandable_first_post
true
end
def include_expandable_first_post?
object.topic.expandable_first_post?
end
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def bookmarked
object.topic_user.try(:bookmarked)
end
def include_pending_posts_count?
scope.is_staff? && NewPostManager.queue_enabled?
end
def include_tags?
SiteSetting.tagging_enabled
end
def topic_timer
TopicTimerSerializer.new(object.topic.public_topic_timer, root: false)
end
def tags
object.topic.tags.map(&:name)
end
def include_featured_link?
SiteSetting.topic_featured_link_enabled
end
def featured_link
object.topic.featured_link
end
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def include_unicode_title?
!!(object.topic.title =~ /:([\w\-+]*):/)
end
def unicode_title
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Emoji.gsub_emoji_to_unicode(object.topic.title)
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end
def include_pm_with_non_human_user?
private_message?(object.topic)
end
private
def private_message?(topic)
@private_message ||= topic.private_message?
end
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end