mirror of
https://github.com/discourse/discourse.git
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139 lines
4.4 KiB
Ruby
139 lines
4.4 KiB
Ruby
# Responsible for creating posts and topics
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#
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require_dependency 'rate_limiter'
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class PostCreator
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attr_reader :errors, :opts
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# Acceptable options:
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#
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# raw - raw text of post
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# image_sizes - We can pass a list of the sizes of images in the post as a shortcut.
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# invalidate_oneboxes - Whether to force invalidation of oneboxes in this post
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#
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# When replying to a topic:
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# topic_id - topic we're replying to
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# reply_to_post_number - post number we're replying to
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#
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# When creating a topic:
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# title - New topic title
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# archetype - Topic archetype
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# category - Category to assign to topic
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# target_usernames - comma delimited list of usernames for membership (private message)
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# meta_data - Topic meta data hash
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def initialize(user, opts)
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@user = user
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@opts = opts
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raise Discourse::InvalidParameters.new(:raw) if @opts[:raw].blank?
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end
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def guardian
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@guardian ||= Guardian.new(@user)
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end
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def create
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topic = nil
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post = nil
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Post.transaction do
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if @opts[:topic_id].blank?
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topic_params = {title: @opts[:title], user_id: @user.id, last_post_user_id: @user.id}
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topic_params[:archetype] = @opts[:archetype] if @opts[:archetype].present?
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guardian.ensure_can_create!(Topic)
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category = Category.where(name: @opts[:category]).first
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topic_params[:category_id] = category.id if category.present?
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topic_params[:meta_data] = @opts[:meta_data] if @opts[:meta_data].present?
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topic = Topic.new(topic_params)
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if @opts[:archetype] == Archetype.private_message
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usernames = @opts[:target_usernames].split(',')
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User.where(:username => usernames).each do |u|
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unless guardian.can_send_private_message?(u)
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topic.errors.add(:archetype, :cant_send_pm)
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@errors = topic.errors
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raise ActiveRecord::Rollback.new
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end
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topic.topic_allowed_users.build(user_id: u.id)
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end
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topic.topic_allowed_users.build(user_id: @user.id)
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end
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unless topic.save
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@errors = topic.errors
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raise ActiveRecord::Rollback.new
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end
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else
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topic = Topic.where(id: @opts[:topic_id]).first
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guardian.ensure_can_create!(Post, topic)
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end
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post = topic.posts.new(raw: @opts[:raw],
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user: @user,
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reply_to_post_number: @opts[:reply_to_post_number])
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post.extract_quoted_post_numbers
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post.image_sizes = @opts[:image_sizes] if @opts[:image_sizes].present?
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post.invalidate_oneboxes = @opts[:invalidate_oneboxes] if @opts[:invalidate_oneboxes].present?
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unless post.save
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@errors = post.errors
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raise ActiveRecord::Rollback.new
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end
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# Extract links
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TopicLink.extract_from(post)
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# Enqueue a job to feature the users in the topic
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Jobs.enqueue(:feature_topic_users, topic_id: topic.id)
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# Trigger post processing
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post.trigger_post_process
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# Store unique post key
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if SiteSetting.unique_posts_mins > 0
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$redis.setex(post.unique_post_key, SiteSetting.unique_posts_mins.minutes.to_i, "1")
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end
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# send a mail to notify users in case of a private message
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if topic.private_message?
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topic.allowed_users.where(["users.email_private_messages = true and users.id != ?", @user.id]).each do |u|
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Jobs.enqueue_in(SiteSetting.email_time_window_mins.minutes, :user_email, type: :private_message, user_id: u.id, post_id: post.id)
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end
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end
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# Track the topic
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TopicUser.auto_track(@user.id, topic.id, TopicUser.notification_reasons[:created_post])
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# Update `last_posted_at` to match the post's created_at
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@user.update_column(:last_posted_at, post.created_at)
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# Publish the post in the message bus
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MessageBus.publish("/topic/#{post.topic_id}",
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id: post.id,
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created_at: post.created_at,
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user: BasicUserSerializer.new(post.user).as_json(root: false),
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post_number: post.post_number)
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# Advance the draft sequence
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post.advance_draft_sequence
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# Save the quote relationships
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post.save_reply_relationships
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end
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post
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end
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# Shortcut
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def self.create(user, opts)
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PostCreator.new(user, opts).create
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end
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end
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