mirror of
https://github.com/discourse/discourse.git
synced 2024-11-28 02:23:45 +08:00
372 lines
10 KiB
Ruby
372 lines
10 KiB
Ruby
require_dependency 'post_creator'
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require_dependency 'post_destroyer'
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require_dependency 'distributed_memoizer'
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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, :expand_embed, :markdown, :raw, :cooked]
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skip_before_filter :check_xhr, only: [:markdown_id, :markdown_num, :short_link]
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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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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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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 cooked
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post = find_post_from_params
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render json: {cooked: post.cooked}
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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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redirect_to post.url
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end
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def create
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params = create_params
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key = params_key(params)
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error_json = nil
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if (is_api?)
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payload = DistributedMemoizer.memoize(key, 120) do
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success, json = create_post(params)
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unless success
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error_json = json
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raise Discourse::InvalidPost
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end
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json
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end
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else
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success, payload = create_post(params)
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unless success
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error_json = payload
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raise Discourse::InvalidPost
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end
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end
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render json: payload
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rescue Discourse::InvalidPost
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render json: error_json, status: 422
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end
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def create_post(params)
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post_creator = PostCreator.new(current_user, params)
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post = post_creator.create
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if post_creator.errors.present?
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# If the post was spam, flag all the user's posts as spam
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current_user.flag_linked_posts_as_spam if post_creator.spam?
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[false, MultiJson.dump(errors: post_creator.errors.full_messages)]
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else
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post_serializer = PostSerializer.new(post, scope: guardian, root: false)
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post_serializer.topic_slug = post.topic.slug if post.topic.present?
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post_serializer.draft_sequence = DraftSequence.current(current_user, post.topic.draft_key)
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[true, MultiJson.dump(post_serializer)]
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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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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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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_edit!(post)
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# to stay consistent with the create api,
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# we should allow for title changes and category changes here
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# we should also move all of this to a post updater.
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if post.post_number == 1 && (params[:title] || params[:post][:category_id])
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post.topic.acting_user = current_user
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post.topic.title = params[:title] if params[:title]
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Topic.transaction do
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post.topic.change_category_to_id(params[:post][:category_id].to_i)
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post.topic.save
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end
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if post.topic.errors.present?
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render_json_error(post.topic)
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return
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end
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end
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revisor = PostRevisor.new(post)
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if revisor.revise!(current_user, params[:post][:raw], edit_reason: params[:post][:edit_reason])
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TopicLink.extract_from(post)
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QuotedPost.extract_from(post)
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end
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if post.errors.present?
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render_json_error(post)
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return
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end
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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, post.topic.draft_key)
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link_counts = TopicLink.counts_for(guardian,post.topic, [post])
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post_serializer.single_post_link_counts = link_counts[post.id] if link_counts.present?
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post_serializer.topic_slug = post.topic.slug if post.topic.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, 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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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)
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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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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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# Direct replies to this post
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def replies
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post = find_post_from_params
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render_serialized(post.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 bookmark
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post = find_post_from_params
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if current_user
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if params[:bookmarked] == "true"
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PostAction.act(current_user, post, PostActionType.types[:bookmark])
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else
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PostAction.remove_act(current_user, post, PostActionType.types[:bookmark])
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end
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end
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render nothing: true
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end
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def wiki
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guardian.ensure_can_wiki!
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post = find_post_from_params
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post.wiki = params[:wiki]
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post.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 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(user.id, offset, limit)
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.where(id: PostAction.with_deleted
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.where(post_action_type_id: PostActionType.notify_flag_type_ids)
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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(user.id, offset, limit)
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.where(user_deleted: false)
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.where.not(deleted_by_id: user.id)
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render_serialized(posts, AdminPostSerializer)
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end
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protected
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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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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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private
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def user_posts(user_id, offset=0, limit=60)
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Post.includes(:user, :topic, :deleted_by, :user_actions)
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.with_deleted
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.where(user_id: user_id)
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.order(created_at: :desc)
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.offset(offset)
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.limit(limit)
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end
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def params_key(params)
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"post##" << Digest::SHA1.hexdigest(params
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.to_a
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.concat([["user", current_user.id]])
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.sort{|x,y| x[0] <=> y[0]}.join do |x,y|
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"#{x}:#{y}"
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end)
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end
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def create_params
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permitted = [
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:raw,
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:topic_id,
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:title,
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:archetype,
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:category,
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:target_usernames,
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:reply_to_post_number,
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:auto_close_time,
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:auto_track
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]
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# param munging for WordPress
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params[:auto_track] = !(params[:auto_track].to_s == "false") if params[:auto_track]
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if api_key_valid?
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# php seems to be sending this incorrectly, don't fight with it
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params[:skip_validations] = params[:skip_validations].to_s == "true"
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permitted << :skip_validations
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# We allow `embed_url` via the API
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permitted << :embed_url
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end
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params.require(:raw)
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params.permit(*permitted).tap do |whitelisted|
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whitelisted[:image_sizes] = params[:image_sizes]
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# TODO this does not feel right, we should name what meta_data is allowed
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whitelisted[:meta_data] = params[:meta_data]
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end
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end
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def too_late_to(action, post)
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!guardian.send("can_#{action}?", post) && post.user_id == current_user.id && post.edit_time_limit_expired?
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end
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def display_post(post)
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post.revert_to(params[:version].to_i) if params[:version].present?
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render_post_json(post)
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end
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def find_post_from_params
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by_id_finder = Post.where(id: params[:id] || params[:post_id])
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find_post_using(by_id_finder)
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end
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def find_post_from_params_by_number
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by_number_finder = Post.where(topic_id: params[:topic_id], post_number: params[:post_number])
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find_post_using(by_number_finder)
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end
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def find_post_using(finder)
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# Include deleted posts if the user is staff
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finder = finder.with_deleted if current_user.try(:staff?)
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post = finder.first
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# load deleted topic
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post.topic = Topic.with_deleted.find(post.topic_id) if current_user.try(:staff?)
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guardian.ensure_can_see!(post)
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post
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end
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end
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