discourse/app/serializers/topic_view_serializer.rb

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require_dependency 'pinned_check'
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class TopicViewSerializer < ApplicationSerializer
include PostStreamSerializerMixin
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# These attributes will be delegated to the topic
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def self.topic_attributes
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[:id,
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:title,
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:fancy_title,
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:posts_count,
:created_at,
:views,
:reply_count,
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:participant_count,
:like_count,
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:last_posted_at,
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:visible,
:closed,
:archived,
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:has_summary,
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:archetype,
:slug,
:category_id,
:word_count,
:deleted_at]
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end
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attributes :draft,
:draft_key,
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:draft_sequence,
:starred,
:posted,
:unpinned,
:pinned_globally,
:pinned, # Is topic pinned and viewer hasn't cleared the pin?
:pinned_at, # Ignores clear pin
:details,
:highest_post_number,
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:last_read_post_number,
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:deleted_by,
:has_deleted,
:actions_summary,
:expandable_first_post
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# Define a delegator for each attribute of the topic we want
attributes(*topic_attributes)
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topic_attributes.each do |ta|
class_eval %{def #{ta}
object.topic.#{ta}
end}
end
# TODO: Split off into proper object / serializer
def details
result = {
auto_close_at: object.topic.auto_close_at,
created_by: BasicUserSerializer.new(object.topic.user, scope: scope, root: false),
last_poster: BasicUserSerializer.new(object.topic.last_poster, scope: scope, root: false)
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}
if object.topic.allowed_users.present?
result[:allowed_users] = object.topic.allowed_users.map do |user|
BasicUserSerializer.new(user, scope: scope, root: false)
end
end
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if object.topic.allowed_groups.present?
result[:allowed_groups] = object.topic.allowed_groups.map do |ag|
BasicGroupSerializer.new(ag, 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|
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?
result[:suggested_topics] = object.suggested_topics.topics.map do |user|
SuggestedTopicSerializer.new(user, 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_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 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
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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 starred
object.topic_user.starred?
end
alias_method :include_starred?, :has_topic_user?
def highest_post_number
object.highest_post_number
end
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def last_read_post_number
object.topic_user.last_read_post_number
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 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,
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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end