Switch Notes controller to use json

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/controllers/projects/notes_controller.rb

@@ -2,71 +2,54 @@ class Projects::NotesController < Projects::ApplicationController
   # Authorize
   before_filter :authorize_read_note!
   before_filter :authorize_write_note!, only: [:create]
-
-  respond_to :js
+  before_filter :authorize_admin_note!, only: [:update, :destroy]
 
   def index
     @notes = Notes::LoadContext.new(project, current_user, params).execute
-    @target_type = params[:target_type].camelize
-    @target_id = params[:target_id]
 
-    if params[:target_type] == "merge_request"
-      @discussions = Note.discussions_from_notes(@notes)
-    end
+    notes_json = { notes: [] }
 
-    respond_to do |format|
-      format.html { redirect_to :back }
-      format.json do
-        render json: {
-          html: view_to_html_string("projects/notes/_notes")
-        }
-      end
+    @notes.each do |note|
+      notes_json[:notes] << {
+        id: note.id,
+        html: note_to_html(note)
+      }
     end
+
+    render json: notes_json
   end
 
   def create
     @note = Notes::CreateContext.new(project, current_user, params).execute
-    @target_type = params[:target_type].camelize
-    @target_id = params[:target_id]
 
     respond_to do |format|
-      format.html {redirect_to :back}
-      format.js
+      format.json { render_note_json(@note) }
+      format.html { redirect_to :back }
     end
   end
 
-  def destroy
-    @note = @project.notes.find(params[:id])
-    return access_denied! unless can?(current_user, :admin_note, @note)
-    @note.destroy
-    @note.reset_events_cache
+  def update
+    note.update_attributes(params[:note])
+    note.reset_events_cache
 
     respond_to do |format|
-      format.js { render nothing: true }
+      format.json { render_note_json(note) }
+      format.html { redirect_to :back }
     end
   end
 
-  def update
-    @note = @project.notes.find(params[:id])
-    return access_denied! unless can?(current_user, :admin_note, @note)
-
-    @note.update_attributes(params[:note])
-    @note.reset_events_cache
+  def destroy
+    note.destroy
+    note.reset_events_cache
 
     respond_to do |format|
-      format.js do
-        render js: { success: @note.valid?, id: @note.id, note: view_context.markdown(@note.note) }.to_json
-      end
-      format.html do
-        redirect_to :back
-      end
+      format.js { render nothing: true }
     end
   end
 
   def delete_attachment
-    @note = @project.notes.find(params[:id])
-    @note.remove_attachment!
-    @note.update_attribute(:attachment, nil)
+    note.remove_attachment!
+    note.update_attribute(:attachment, nil)
 
     respond_to do |format|
       format.js { render nothing: true }
@@ -76,4 +59,41 @@ class Projects::NotesController < Projects::ApplicationController
   def preview
     render text: view_context.markdown(params[:note])
   end
+
+  private
+
+  def note
+    @note ||= @project.notes.find(params[:id])
+  end
+
+  def note_to_html(note)
+    render_to_string(
+      "projects/notes/_note",
+      layout: false,
+      formats: [:html],
+      locals: { note: note }
+    )
+  end
+
+  def note_to_discussion_html(note)
+    render_to_string(
+      "projects/notes/_diff_notes_with_reply",
+      layout: false,
+      formats: [:html],
+      locals: { notes: [note] }
+    )
+  end
+
+  def render_note_json(note)
+    render json: {
+      id: note.id,
+      discussion_id: note.discussion_id,
+      html: note_to_html(note),
+      discussion_html: note_to_discussion_html(note)
+    }
+  end
+
+  def authorize_admin_note!
+    return access_denied! unless can?(current_user, :admin_note, note)
+  end
 end

app/views/projects/notes/_form.html.haml

-= form_for [@project, @note], remote: true, html: { multipart: true, id: nil, class: "new_note js-new-note-form common-note-form" }, authenticity_token: true do |f|
-
+= form_for [@project, @note], remote: true, html: { :'data-type' => 'json', multipart: true, id: nil, class: "new_note js-new-note-form common-note-form" }, authenticity_token: true do |f|
   = note_target_fields
   = f.hidden_field :commit_id
   = f.hidden_field :line_code

app/views/projects/notes/_notes_with_form.html.haml

-%ul#notes-list.notes
+%ul#notes-list.notes.main-notes-list
   = render "projects/notes/notes"
 .js-notes-busy
 
@@ -7,4 +7,4 @@
   = render "projects/notes/form"
 
 :javascript
-  NoteList.init("#{@target_id}", "#{@target_type}", "#{project_notes_path(@project)}");
+  new Notes("#{project_notes_path(target_id: @noteable.id, target_type: @noteable.class.name.underscore)}", #{@notes.map(&:id).to_json})

app/views/projects/notes/create.js.haml

-- if @note.valid?
-  var noteHtml = "#{escape_javascript(render @note)}";
-
-  - if note_for_main_target?(@note)
-    NoteList.appendNewNote(#{@note.id}, noteHtml);
-  - else
-    :plain
-      var firstDiscussionNoteHtml = "#{escape_javascript(render "projects/notes/diff_notes_with_reply", notes: [@note])}";
-      NoteList.appendNewDiscussionNote("#{@note.discussion_id}",
-                                       firstDiscussionNoteHtml,
-                                       noteHtml);
-
-- else
-  var errorsHtml = "#{escape_javascript(render 'projects/notes/form_errors', note: @note)}";
-  - if note_for_main_target?(@note)
-    NoteList.errorsOnForm(errorsHtml);
-  - else
-    NoteList.errorsOnForm(errorsHtml, "#{@note.discussion_id}");