Display slash commands outcome when previewing Markdown

Remove slash commands from Markdown preview and display their outcome next to
the text field.
Introduce new "explanation" block to our slash commands DSL.
Introduce optional "parse_params" block to slash commands DSL that allows to
process a parameter before it is passed to "explanation" or "command" blocks.
Pass path for previewing Markdown as "data" attribute instead of setting
a variable on "window".

1 files changed, 8 insertions, 5 deletions

diff --git a/app/controllers/projects/wikis_controller.rb b/app/controllers/projects/wikis_controller.rb
index 96125684da0..887d18dbec3 100644
--- a/app/controllers/projects/wikis_controller.rb
+++ b/app/controllers/projects/wikis_controller.rb
@@ -1,6 +1,4 @@
 class Projects::WikisController < Projects::ApplicationController
-  include MarkdownPreview
-
   before_action :authorize_read_wiki!
   before_action :authorize_create_wiki!, only: [:edit, :create, :history]
   before_action :authorize_admin_wiki!, only: :destroy
@@ -97,9 +95,14 @@ class Projects::WikisController < Projects::ApplicationController
   end
 
   def preview_markdown
-    context = { pipeline: :wiki, project_wiki: @project_wiki, page_slug: params[:id] }
-
-    render_markdown_preview(params[:text], context)
+    result = PreviewMarkdownService.new(@project, current_user, params).execute
+
+    render json: {
+      body: view_context.markdown(result[:text], pipeline: :wiki, project_wiki: @project_wiki, page_slug: params[:id]),
+      references: {
+        users: result[:users]
+      }
+    }
   end
 
   private