Class: TopicList

Inherits:
Object
  • Object
show all
Includes:
ActiveModel::Serialization
Defined in:
app/models/topic_list.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filter, current_user, topics, opts = nil) ⇒ TopicList

Returns a new instance of TopicList.



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# File 'app/models/topic_list.rb', line 51

def initialize(filter, current_user, topics, opts = nil)
  @filter = filter
  @current_user = current_user
  @topics_input = topics
  @opts = opts || {}

  @category = Category.find_by(id: @opts[:category_id]) if @opts[:category]

  @tags = Tag.where(id: @opts[:tags]).all if @opts[:tags]

  @publish_read_state = !!@opts[:publish_read_state]
end

Instance Attribute Details

#category ⇒ Object

Returns the value of attribute category.



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# File 'app/models/topic_list.rb', line 37

def category
  @category
end

#current_user ⇒ Object

Returns the value of attribute current_user.



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# File 'app/models/topic_list.rb', line 37

def current_user
  @current_user
end

#filter ⇒ Object

Returns the value of attribute filter.



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# File 'app/models/topic_list.rb', line 37

def filter
  @filter
end

#for_period ⇒ Object

Returns the value of attribute for_period.



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# File 'app/models/topic_list.rb', line 37

def for_period
  @for_period
end

#more_topics_url ⇒ Object

Returns the value of attribute more_topics_url.



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# File 'app/models/topic_list.rb', line 37

def more_topics_url
  @more_topics_url
end

#per_page ⇒ Object

Returns the value of attribute per_page.



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# File 'app/models/topic_list.rb', line 37

def per_page
  @per_page
end

#prev_topics_url ⇒ Object

Returns the value of attribute prev_topics_url.



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# File 'app/models/topic_list.rb', line 37

def prev_topics_url
  @prev_topics_url
end

#shared_drafts ⇒ Object

Returns the value of attribute shared_drafts.



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# File 'app/models/topic_list.rb', line 37

def shared_drafts
  @shared_drafts
end

#tags ⇒ Object

Returns the value of attribute tags.



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# File 'app/models/topic_list.rb', line 37

def tags
  @tags
end

#top_tags ⇒ Object

Returns the value of attribute top_tags.



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# File 'app/models/topic_list.rb', line 37

def top_tags
  @top_tags
end

Class Method Details

.cancel_preload(&blk) ⇒ Object 



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# File 'app/models/topic_list.rb', line 13

def self.cancel_preload(&blk)
  if @preload
    @preload.delete blk
    @preload = nil if @preload.length == 0
  end
end

.on_preload(&blk) ⇒ Object 



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# File 'app/models/topic_list.rb', line 9

def self.on_preload(&blk)
  (@preload ||= Set.new) << blk
end

.on_preload_user_ids(&blk) ⇒ Object 



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# File 'app/models/topic_list.rb', line 24

def self.on_preload_user_ids(&blk)
  (@preload_user_ids ||= Set.new) << blk
end

.preload(topics, object) ⇒ Object 



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# File 'app/models/topic_list.rb', line 20

def self.preload(topics, object)
  @preload.each { |preload| preload.call(topics, object) } if @preload
end

.preload_user_ids(topics, user_ids, object) ⇒ Object 



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# File 'app/models/topic_list.rb', line 28

def self.preload_user_ids(topics, user_ids, object)
  if @preload_user_ids
    @preload_user_ids.each do |preload_user_ids|
      user_ids = preload_user_ids.call(topics, user_ids, object)
    end
  end
  user_ids
end

Instance Method Details

#attributes ⇒ Object 



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# File 'app/models/topic_list.rb', line 148

def attributes
  { "more_topics_url" => page }
end

#load_topics ⇒ Object 



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# File 'app/models/topic_list.rb', line 79

def load_topics
  @topics = @topics_input

  # Attach some data for serialization to each topic
  @topic_lookup = TopicUser.lookup_for(@current_user, @topics) if @current_user
  @dismissed_topic_users_lookup =
    DismissedTopicUser.lookup_for(@current_user, @topics) if @current_user

  post_action_type =
    if @current_user
      if @opts[:filter].present?
        PostActionType.types[:like] if @opts[:filter] == "liked"
      end
    end

  # Data for bookmarks or likes
  post_action_lookup =
    PostAction.lookup_for(@current_user, @topics, post_action_type) if post_action_type

  # Create a lookup for all the user ids we need
  user_ids = []
  group_ids = []
  @topics.each do |ft|
    user_ids << ft.user_id << ft.last_post_user_id << ft.featured_user_ids << ft.allowed_user_ids
    group_ids |= (ft.allowed_group_ids || [])
  end

  user_ids = TopicList.preload_user_ids(@topics, user_ids, self)
  user_lookup = UserLookup.new(user_ids)
  group_lookup = GroupLookup.new(group_ids)

  @topics.each do |ft|
    ft.user_data = @topic_lookup[ft.id] if @topic_lookup.present?

    if ft.regular? && category_user_lookup.present?
      ft.category_user_data = @category_user_lookup[ft.category_id]
    end

    ft.dismissed = @current_user && @dismissed_topic_users_lookup.include?(ft.id)

    if ft.user_data && post_action_lookup && actions = post_action_lookup[ft.id]
      ft.user_data.post_action_data = { post_action_type => actions }
    end

    ft.posters = ft.posters_summary(user_lookup: user_lookup)

    ft.participants = ft.participants_summary(user_lookup: user_lookup, user: @current_user)
    ft.participant_groups =
      ft.participant_groups_summary(group_lookup: group_lookup, group: @opts[:group])
    ft.topic_list = self
  end

  topic_preloader_associations = [:image_upload, { topic_thumbnails: :optimized_image }]
  topic_preloader_associations.concat(DiscoursePluginRegistry.topic_preloader_associations.to_a)

  ActiveRecord::Associations::Preloader.new(
    records: @topics,
    associations: topic_preloader_associations,
  ).call

  if preloaded_custom_fields.present?
    Topic.preload_custom_fields(@topics, preloaded_custom_fields)
  end

  TopicList.preload(@topics, self)

  @topics
end

#preload_key ⇒ Object 



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# File 'app/models/topic_list.rb', line 70

def preload_key
  "topic_list"
end

#topics ⇒ Object

Lazy initialization



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# File 'app/models/topic_list.rb', line 75

def topics
  @topics ||= load_topics
end