659 lines
21 KiB
Ruby
659 lines
21 KiB
Ruby
require_dependency 'new_post_manager'
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require_dependency 'post_creator'
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require_dependency 'post_destroyer'
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require_dependency 'post_merger'
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require_dependency 'distributed_memoizer'
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require_dependency 'new_post_result_serializer'
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class PostsController < ApplicationController
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# Need to be logged in for all actions here
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before_filter :ensure_logged_in, except: [:show, :replies, :by_number, :short_link, :reply_history, :revisions, :latest_revision, :expand_embed, :markdown_id, :markdown_num, :cooked, :latest, :user_posts_feed]
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skip_before_filter :preload_json, :check_xhr, only: [:markdown_id, :markdown_num, :short_link, :latest, :user_posts_feed]
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def markdown_id
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markdown Post.find(params[:id].to_i)
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end
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def markdown_num
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if params[:revision].present?
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post_revision = find_post_revision_from_topic_id
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render text: post_revision.modifications[:raw].last, content_type: 'text/plain'
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else
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markdown Post.find_by(topic_id: params[:topic_id].to_i, post_number: (params[:post_number] || 1).to_i)
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end
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end
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def markdown(post)
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if post && guardian.can_see?(post)
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render text: post.raw, content_type: 'text/plain'
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else
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raise Discourse::NotFound
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end
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end
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def latest
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params.permit(:before)
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last_post_id = params[:before].to_i
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last_post_id = Post.last.id if last_post_id <= 0
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if params[:id] == "private_posts"
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raise Discourse::NotFound if current_user.nil?
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posts = Post.private_posts
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.order(created_at: :desc)
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.where('posts.id <= ?', last_post_id)
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.where('posts.id > ?', last_post_id - 50)
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.includes(topic: :category)
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.includes(user: :primary_group)
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.includes(:reply_to_user)
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.limit(50)
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rss_description = I18n.t("rss_description.private_posts")
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else
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posts = Post.public_posts
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.order(created_at: :desc)
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.where('posts.id <= ?', last_post_id)
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.where('posts.id > ?', last_post_id - 50)
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.includes(topic: :category)
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.includes(user: :primary_group)
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.includes(:reply_to_user)
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.limit(50)
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rss_description = I18n.t("rss_description.posts")
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end
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# Remove posts the user doesn't have permission to see
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# This isn't leaking any information we weren't already through the post ID numbers
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posts = posts.reject { |post| !guardian.can_see?(post) || post.topic.blank? }
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counts = PostAction.counts_for(posts, current_user)
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respond_to do |format|
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format.rss do
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@posts = posts
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@title = "#{SiteSetting.title} - #{rss_description}"
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@link = Discourse.base_url
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@description = rss_description
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render 'posts/latest', formats: [:rss]
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end
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format.json do
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render_json_dump(serialize_data(posts,
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PostSerializer,
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scope: guardian,
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root: params[:id],
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add_raw: true,
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add_title: true,
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all_post_actions: counts)
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)
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end
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end
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end
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def user_posts_feed
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params.require(:username)
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user = fetch_user_from_params
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posts = Post.public_posts
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.where(user_id: user.id)
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.where(post_type: Post.types[:regular])
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.order(created_at: :desc)
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.includes(:user)
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.includes(topic: :category)
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.limit(50)
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posts = posts.reject { |post| !guardian.can_see?(post) || post.topic.blank? }
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@posts = posts
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@title = "#{SiteSetting.title} - #{I18n.t("rss_description.user_posts", username: user.username)}"
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@link = "#{Discourse.base_url}/users/#{user.username}/activity"
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@description = I18n.t("rss_description.user_posts", username: user.username)
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render 'posts/latest', formats: [:rss]
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end
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def cooked
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render json: { cooked: find_post_from_params.cooked }
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end
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def raw_email
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params.require(:id)
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post = Post.unscoped.find(params[:id].to_i)
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guardian.ensure_can_view_raw_email!(post)
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text, html = Email.extract_parts(post.raw_email)
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render json: { raw_email: post.raw_email, text_part: text, html_part: html }
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end
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def short_link
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post = Post.find(params[:post_id].to_i)
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# Stuff the user in the request object, because that's what IncomingLink wants
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if params[:user_id]
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user = User.find(params[:user_id].to_i)
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request['u'] = user.username_lower if user
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end
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guardian.ensure_can_see!(post)
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redirect_to path(post.url)
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end
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def create
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@manager_params = create_params
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@manager_params[:first_post_checks] = !is_api?
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manager = NewPostManager.new(current_user, @manager_params)
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if is_api?
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memoized_payload = DistributedMemoizer.memoize(signature_for(@manager_params), 120) do
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result = manager.perform
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MultiJson.dump(serialize_data(result, NewPostResultSerializer, root: false))
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end
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parsed_payload = JSON.parse(memoized_payload)
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backwards_compatible_json(parsed_payload, parsed_payload['success'])
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else
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result = manager.perform
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json = serialize_data(result, NewPostResultSerializer, root: false)
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backwards_compatible_json(json, result.success?)
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end
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end
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def update
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params.require(:post)
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post = Post.where(id: params[:id])
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post = post.with_deleted if guardian.is_staff?
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post = post.first
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raise Discourse::NotFound if post.blank?
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post.image_sizes = params[:image_sizes] if params[:image_sizes].present?
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if too_late_to(:edit, post)
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return render json: { errors: [I18n.t('too_late_to_edit')] }, status: 422
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end
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guardian.ensure_can_edit!(post)
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changes = {
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raw: params[:post][:raw],
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edit_reason: params[:post][:edit_reason]
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}
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# to stay consistent with the create api, we allow for title & category changes here
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if post.is_first_post?
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changes[:title] = params[:title] if params[:title]
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changes[:category_id] = params[:post][:category_id] if params[:post][:category_id]
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end
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# We don't need to validate edits to small action posts by staff
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opts = {}
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if post.post_type == Post.types[:small_action] && current_user.staff?
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opts[:skip_validations] = true
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end
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topic = post.topic
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topic = Topic.with_deleted.find(post.topic_id) if guardian.is_staff?
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revisor = PostRevisor.new(post, topic)
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revisor.revise!(current_user, changes, opts)
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return render_json_error(post) if post.errors.present?
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return render_json_error(topic) if topic.errors.present?
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post_serializer = PostSerializer.new(post, scope: guardian, root: false)
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post_serializer.draft_sequence = DraftSequence.current(current_user, topic.draft_key)
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link_counts = TopicLink.counts_for(guardian, topic, [post])
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post_serializer.single_post_link_counts = link_counts[post.id] if link_counts.present?
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result = { post: post_serializer.as_json }
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if revisor.category_changed.present?
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result[:category] = BasicCategorySerializer.new(revisor.category_changed, scope: guardian, root: false).as_json
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end
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render_json_dump(result)
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end
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def show
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post = find_post_from_params
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display_post(post)
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end
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def by_number
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post = find_post_from_params_by_number
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display_post(post)
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end
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def reply_history
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post = find_post_from_params
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render_serialized(post.reply_history(params[:max_replies].to_i, guardian), PostSerializer)
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end
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def destroy
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post = find_post_from_params
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RateLimiter.new(current_user, "delete_post", 3, 1.minute).performed! unless current_user.staff?
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if too_late_to(:delete_post, post)
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render json: {errors: [I18n.t('too_late_to_edit')]}, status: 422
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return
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end
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guardian.ensure_can_delete!(post)
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destroyer = PostDestroyer.new(current_user, post, { context: params[:context] })
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destroyer.destroy
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render nothing: true
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end
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def expand_embed
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render json: {cooked: TopicEmbed.expanded_for(find_post_from_params) }
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rescue
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render_json_error I18n.t('errors.embed.load_from_remote')
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end
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def recover
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post = find_post_from_params
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RateLimiter.new(current_user, "delete_post", 3, 1.minute).performed! unless current_user.staff?
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guardian.ensure_can_recover_post!(post)
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destroyer = PostDestroyer.new(current_user, post)
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destroyer.recover
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post.reload
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render_post_json(post)
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end
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def destroy_many
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params.require(:post_ids)
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posts = Post.where(id: post_ids_including_replies)
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raise Discourse::InvalidParameters.new(:post_ids) if posts.blank?
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# Make sure we can delete the posts
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posts.each {|p| guardian.ensure_can_delete!(p) }
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Post.transaction do
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posts.each {|p| PostDestroyer.new(current_user, p).destroy }
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end
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render nothing: true
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end
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def merge_posts
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params.require(:post_ids)
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posts = Post.where(id: params[:post_ids]).order(:id)
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raise Discourse::InvalidParameters.new(:post_ids) if posts.pluck(:id) == params[:post_ids]
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PostMerger.new(current_user, posts).merge
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render nothing: true
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end
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# Direct replies to this post
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def replies
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post = find_post_from_params
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replies = post.replies.secured(guardian)
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render_serialized(replies, PostSerializer)
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end
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def revisions
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post_revision = find_post_revision_from_params
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post_revision_serializer = PostRevisionSerializer.new(post_revision, scope: guardian, root: false)
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render_json_dump(post_revision_serializer)
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end
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def latest_revision
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post_revision = find_latest_post_revision_from_params
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post_revision_serializer = PostRevisionSerializer.new(post_revision, scope: guardian, root: false)
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render_json_dump(post_revision_serializer)
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end
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def hide_revision
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post_revision = find_post_revision_from_params
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guardian.ensure_can_hide_post_revision!(post_revision)
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post_revision.hide!
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post = find_post_from_params
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post.public_version -= 1
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post.save
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render nothing: true
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end
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def show_revision
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post_revision = find_post_revision_from_params
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guardian.ensure_can_show_post_revision!(post_revision)
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post_revision.show!
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post = find_post_from_params
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post.public_version += 1
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post.save
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render nothing: true
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end
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def revert
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raise Discourse::NotFound unless guardian.is_staff?
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post_id = params[:id] || params[:post_id]
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revision = params[:revision].to_i
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raise Discourse::InvalidParameters.new(:revision) if revision < 2
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post_revision = PostRevision.find_by(post_id: post_id, number: revision)
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raise Discourse::NotFound unless post_revision
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post = find_post_from_params
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raise Discourse::NotFound if post.blank?
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post_revision.post = post
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guardian.ensure_can_see!(post_revision)
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guardian.ensure_can_edit!(post)
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return render_json_error(I18n.t('revert_version_same')) if post_revision.modifications["raw"].blank? && post_revision.modifications["title"].blank? && post_revision.modifications["category_id"].blank?
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topic = Topic.with_deleted.find(post.topic_id)
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changes = {}
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changes[:raw] = post_revision.modifications["raw"][0] if post_revision.modifications["raw"].present? && post_revision.modifications["raw"][0] != post.raw
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if post.is_first_post?
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changes[:title] = post_revision.modifications["title"][0] if post_revision.modifications["title"].present? && post_revision.modifications["title"][0] != topic.title
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changes[:category_id] = post_revision.modifications["category_id"][0] if post_revision.modifications["category_id"].present? && post_revision.modifications["category_id"][0] != topic.category.id
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end
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return render_json_error(I18n.t('revert_version_same')) unless changes.length > 0
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changes[:edit_reason] = "reverted to version ##{post_revision.number.to_i - 1}"
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revisor = PostRevisor.new(post, topic)
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revisor.revise!(current_user, changes)
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return render_json_error(post) if post.errors.present?
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return render_json_error(topic) if topic.errors.present?
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post_serializer = PostSerializer.new(post, scope: guardian, root: false)
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post_serializer.draft_sequence = DraftSequence.current(current_user, topic.draft_key)
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link_counts = TopicLink.counts_for(guardian, topic, [post])
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post_serializer.single_post_link_counts = link_counts[post.id] if link_counts.present?
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result = { post: post_serializer.as_json }
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if post.is_first_post?
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result[:topic] = BasicTopicSerializer.new(topic, scope: guardian, root: false).as_json if post_revision.modifications["title"].present?
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result[:category_id] = post_revision.modifications["category_id"][0] if post_revision.modifications["category_id"].present?
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end
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render_json_dump(result)
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end
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def bookmark
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if params[:bookmarked] == "true"
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post = find_post_from_params
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PostAction.act(current_user, post, PostActionType.types[:bookmark])
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else
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post_action = PostAction.find_by(post_id: params[:post_id], user_id: current_user.id)
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post = post_action.post
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raise Discourse::InvalidParameters unless post_action
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PostAction.remove_act(current_user, post, PostActionType.types[:bookmark])
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end
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topic_user = TopicUser.get(post.topic, current_user)
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render_json_dump(topic_bookmarked: topic_user.try(:bookmarked))
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end
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def wiki
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post = find_post_from_params
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guardian.ensure_can_wiki!(post)
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post.revise(current_user, { wiki: params[:wiki] })
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render nothing: true
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end
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def post_type
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guardian.ensure_can_change_post_type!
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post = find_post_from_params
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post.revise(current_user, { post_type: params[:post_type].to_i })
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render nothing: true
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end
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def rebake
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guardian.ensure_can_rebake!
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post = find_post_from_params
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post.rebake!(invalidate_oneboxes: true)
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render nothing: true
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end
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def unhide
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post = find_post_from_params
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guardian.ensure_can_unhide!(post)
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post.unhide!
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render nothing: true
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end
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def flagged_posts
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params.permit(:offset, :limit)
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guardian.ensure_can_see_flagged_posts!
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user = fetch_user_from_params
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offset = [params[:offset].to_i, 0].max
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limit = [(params[:limit] || 60).to_i, 100].min
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posts = user_posts(guardian, user.id, offset: offset, limit: limit)
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.where(id: PostAction.where(post_action_type_id: PostActionType.notify_flag_type_ids)
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.where(disagreed_at: nil)
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.select(:post_id))
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render_serialized(posts, AdminPostSerializer)
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end
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def deleted_posts
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params.permit(:offset, :limit)
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guardian.ensure_can_see_deleted_posts!
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user = fetch_user_from_params
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offset = [params[:offset].to_i, 0].max
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limit = [(params[:limit] || 60).to_i, 100].min
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posts = user_posts(guardian, user.id, offset: offset, limit: limit).where.not(deleted_at: nil)
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render_serialized(posts, AdminPostSerializer)
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end
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protected
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# We can't break the API for making posts. The new, queue supporting API
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# doesn't return the post as the root JSON object, but as a nested object.
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# If a param is present it uses that result structure.
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def backwards_compatible_json(json_obj, success)
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json_obj.symbolize_keys!
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if params[:nested_post].blank? && json_obj[:errors].blank? && json_obj[:action] != :enqueued
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json_obj = json_obj[:post]
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end
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if !success && GlobalSetting.try(:verbose_api_logging) && (is_api? || is_user_api?)
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Rails.logger.error "Error creating post via API:\n\n#{json_obj.inspect}"
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end
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render json: json_obj, status: (!!success) ? 200 : 422
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end
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def find_post_revision_from_params
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post_id = params[:id] || params[:post_id]
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revision = params[:revision].to_i
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raise Discourse::InvalidParameters.new(:revision) if revision < 2
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post_revision = PostRevision.find_by(post_id: post_id, number: revision)
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raise Discourse::NotFound unless post_revision
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post_revision.post = find_post_from_params
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guardian.ensure_can_see!(post_revision)
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post_revision
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end
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def find_latest_post_revision_from_params
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post_id = params[:id] || params[:post_id]
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finder = PostRevision.where(post_id: post_id).order(:number)
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finder = finder.where(hidden: false) unless guardian.is_staff?
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post_revision = finder.last
|
|
|
|
raise Discourse::NotFound unless post_revision
|
|
|
|
post_revision.post = find_post_from_params
|
|
guardian.ensure_can_see!(post_revision)
|
|
|
|
post_revision
|
|
end
|
|
|
|
def find_post_revision_from_topic_id
|
|
post = Post.find_by(topic_id: params[:topic_id].to_i, post_number: (params[:post_number] || 1).to_i)
|
|
raise Discourse::NotFound unless guardian.can_see?(post)
|
|
|
|
revision = params[:revision].to_i
|
|
raise Discourse::NotFound if revision < 2
|
|
|
|
post_revision = PostRevision.find_by(post_id: post.id, number: revision)
|
|
raise Discourse::NotFound unless post_revision
|
|
|
|
post_revision.post = post
|
|
guardian.ensure_can_see!(post_revision)
|
|
|
|
post_revision
|
|
end
|
|
|
|
private
|
|
|
|
def user_posts(guardian, user_id, opts)
|
|
posts = Post.includes(:user, :topic, :deleted_by, :user_actions)
|
|
.where(user_id: user_id)
|
|
.with_deleted
|
|
.order(created_at: :desc)
|
|
|
|
if guardian.user.moderator?
|
|
|
|
# Awful hack, but you can't seem to remove the `default_scope` when joining
|
|
# So instead I grab the topics separately
|
|
topic_ids = posts.dup.pluck(:topic_id)
|
|
topics = Topic.where(id: topic_ids).with_deleted.where.not(archetype: 'private_message')
|
|
topics = topics.secured(guardian)
|
|
|
|
posts = posts.where(topic_id: topics.pluck(:id))
|
|
end
|
|
|
|
posts.offset(opts[:offset])
|
|
.limit(opts[:limit])
|
|
end
|
|
|
|
def create_params
|
|
permitted = [
|
|
:raw,
|
|
:topic_id,
|
|
:archetype,
|
|
:category,
|
|
:target_usernames,
|
|
:reply_to_post_number,
|
|
:auto_track,
|
|
:typing_duration_msecs,
|
|
:composer_open_duration_msecs,
|
|
:visible
|
|
]
|
|
|
|
# param munging for WordPress
|
|
params[:auto_track] = !(params[:auto_track].to_s == "false") if params[:auto_track]
|
|
params[:visible] = (params[:unlist_topic].to_s == "false") if params[:unlist_topic]
|
|
|
|
if is_api?
|
|
# php seems to be sending this incorrectly, don't fight with it
|
|
params[:skip_validations] = params[:skip_validations].to_s == "true"
|
|
permitted << :skip_validations
|
|
|
|
# We allow `embed_url` via the API
|
|
permitted << :embed_url
|
|
|
|
# We allow `created_at` via the API
|
|
permitted << :created_at
|
|
|
|
end
|
|
|
|
result = params.permit(*permitted).tap do |whitelisted|
|
|
whitelisted[:image_sizes] = params[:image_sizes]
|
|
# TODO this does not feel right, we should name what meta_data is allowed
|
|
whitelisted[:meta_data] = params[:meta_data]
|
|
end
|
|
|
|
# Staff are allowed to pass `is_warning`
|
|
if current_user.staff?
|
|
params.permit(:is_warning)
|
|
result[:is_warning] = (params[:is_warning] == "true")
|
|
else
|
|
result[:is_warning] = false
|
|
end
|
|
|
|
if current_user.staff? && SiteSetting.enable_whispers? && params[:whisper] == "true"
|
|
result[:post_type] = Post.types[:whisper]
|
|
end
|
|
|
|
PostRevisor.tracked_topic_fields.each_key do |f|
|
|
params.permit(f => [])
|
|
result[f] = params[f] if params.has_key?(f)
|
|
end
|
|
|
|
# Stuff we can use in spam prevention plugins
|
|
result[:ip_address] = request.remote_ip
|
|
result[:user_agent] = request.user_agent
|
|
result[:referrer] = request.env["HTTP_REFERER"]
|
|
|
|
if usernames = result[:target_usernames]
|
|
usernames = usernames.split(",")
|
|
groups = Group.mentionable(current_user).where('name in (?)', usernames).pluck('name')
|
|
usernames -= groups
|
|
result[:target_usernames] = usernames.join(",")
|
|
result[:target_group_names] = groups.join(",")
|
|
end
|
|
|
|
result
|
|
end
|
|
|
|
def signature_for(args)
|
|
"post##" << Digest::SHA1.hexdigest(args
|
|
.to_a
|
|
.concat([["user", current_user.id]])
|
|
.sort{|x,y| x[0] <=> y[0]}.join do |x,y|
|
|
"#{x}:#{y}"
|
|
end)
|
|
end
|
|
|
|
def too_late_to(action, post)
|
|
!guardian.send("can_#{action}?", post) && post.user_id == current_user.id && post.edit_time_limit_expired?
|
|
end
|
|
|
|
def display_post(post)
|
|
post.revert_to(params[:version].to_i) if params[:version].present?
|
|
render_post_json(post)
|
|
end
|
|
|
|
def find_post_from_params
|
|
by_id_finder = Post.where(id: params[:id] || params[:post_id])
|
|
find_post_using(by_id_finder)
|
|
end
|
|
|
|
def find_post_from_params_by_number
|
|
by_number_finder = Post.where(topic_id: params[:topic_id], post_number: params[:post_number])
|
|
find_post_using(by_number_finder)
|
|
end
|
|
|
|
def find_post_using(finder)
|
|
# Include deleted posts if the user is staff
|
|
finder = finder.with_deleted if current_user.try(:staff?)
|
|
post = finder.first
|
|
raise Discourse::NotFound unless post
|
|
# load deleted topic
|
|
post.topic = Topic.with_deleted.find(post.topic_id) if current_user.try(:staff?)
|
|
guardian.ensure_can_see!(post)
|
|
post
|
|
end
|
|
|
|
end
|