discourse/app/controllers/embed_controller.rb

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class EmbedController < ApplicationController
skip_before_filter :check_xhr
skip_before_filter :preload_json
skip_before_filter :verify_authenticity_token
before_filter :ensure_embeddable
layout 'embed'
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def comments
embed_url = params.require(:embed_url)
topic_id = TopicEmbed.topic_id_for_embed(embed_url)
if topic_id
@topic_view = TopicView.new(topic_id,
current_user,
limit: SiteSetting.embed_post_limit,
exclude_first: true,
exclude_deleted_users: true)
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@second_post_url = "#{@topic_view.topic.url}/2" if @topic_view
@posts_left = 0
if @topic_view && @topic_view.posts.size == SiteSetting.embed_post_limit
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@posts_left = @topic_view.topic.posts_count - SiteSetting.embed_post_limit - 1
end
else
Jobs.enqueue(:retrieve_topic, user_id: current_user.try(:id), embed_url: embed_url)
render 'loading'
end
discourse_expires_in 1.minute
end
def count
embed_urls = params[:embed_url]
by_url = {}
if embed_urls.present?
urls = embed_urls.map {|u| u.sub(/#discourse-comments$/, '').sub(/\/$/, '') }
topic_embeds = TopicEmbed.where(embed_url: urls).includes(:topic).references(:topic)
topic_embeds.each do |te|
url = te.embed_url
url = "#{url}#discourse-comments" unless params[:embed_url].include?(url)
by_url[url] = I18n.t('embed.replies', count: te.topic.posts_count - 1)
end
end
render json: {counts: by_url}, callback: params[:callback]
end
private
def ensure_embeddable
if !(Rails.env.development? && current_user.try(:admin?))
raise Discourse::InvalidAccess.new('embeddable host not set') if SiteSetting.normalized_embeddable_host.blank?
raise Discourse::InvalidAccess.new('invalid referer host') if URI(request.referer || '').host != SiteSetting.normalized_embeddable_host
end
response.headers['X-Frame-Options'] = "ALLOWALL"
rescue URI::InvalidURIError
raise Discourse::InvalidAccess.new('invalid referer host')
end
end