Add option to create merge request when editing/creating a file

app/assets/javascripts/blob/edit_blob.js.coffee

@@ -11,6 +11,13 @@ class @EditBlob
     if ace_mode
       editor.getSession().setMode "ace/mode/" + ace_mode
 
+    $('#new_branch').keyup ->
+      if $(this).val() != $('#original_branch').val()
+        $('.form-group.destination').show()
+      else
+        $('.form-group.destination').hide()
+        $('#create_merge_request').prop('checked', false)
+
     $(".js-commit-button").click ->
       $("#file-content").val editor.getValue()
       $(".file-editor form").submit()

app/assets/javascripts/blob/new_blob.js.coffee

@@ -11,6 +11,13 @@ class @NewBlob
     if ace_mode
       editor.getSession().setMode "ace/mode/" + ace_mode
 
+    $('#new_branch').keyup ->
+      if $(this).val() != $('#original_branch').val()
+        $('.form-group.destination').show()
+      else
+        $('.form-group.destination').hide()
+        $('#create_merge_request').prop('checked', false)
+
     $(".js-commit-button").click ->
       $("#file-content").val editor.getValue()
       $(".file-editor form").submit()

app/assets/stylesheets/pages/editor.scss

@@ -63,4 +63,8 @@
     margin-top: 0;
     padding: $gl-padding
   }
+
+  .destination {
+    display: none;
+  }
 }

app/controllers/application_controller.rb

@@ -22,6 +22,7 @@ class ApplicationController < ActionController::Base
 
   helper_method :abilities, :can?, :current_application_settings
   helper_method :import_sources_enabled?, :github_import_enabled?, :github_import_configured?, :gitlab_import_enabled?, :gitlab_import_configured?, :bitbucket_import_enabled?, :bitbucket_import_configured?, :gitorious_import_enabled?, :google_code_import_enabled?, :fogbugz_import_enabled?, :git_import_enabled?
+  helper_method :new_mr_from_push_event, :new_mr_path_for_fork_from_push_event, :new_mr_path_from_push_event
 
   rescue_from Encoding::CompatibilityError do |exception|
     log_exception(exception)
@@ -343,4 +344,33 @@ class ApplicationController < ActionController::Base
   def git_import_enabled?
     current_application_settings.import_sources.include?('git')
   end
+
+  # new merge requests routing helpers
+  def new_mr_path_from_push_event(event, target_branch=nil)
+    target_project = event.project.forked_from_project || event.project
+    new_namespace_project_merge_request_path(
+      event.project.namespace,
+      event.project,
+      new_mr_from_push_event(event, target_project, target_branch)
+    )
+  end
+
+  def new_mr_path_for_fork_from_push_event(event, target_branch=nil)
+    new_namespace_project_merge_request_path(
+      event.project.namespace,
+      event.project,
+      new_mr_from_push_event(event, event.project.forked_from_project, target_branch)
+    )
+  end
+
+  def new_mr_from_push_event(event, target_project, target_branch)
+    {
+      merge_request: {
+        source_project_id: event.project.id,
+        target_project_id: target_project.id,
+        source_branch: event.branch_name,
+        target_branch: target_branch || target_project.repository.root_ref
+      }
+    }
+  end
 end

app/controllers/projects/blob_controller.rb

@@ -27,7 +27,14 @@ class Projects::BlobController < Projects::ApplicationController
     if result[:status] == :success
       flash[:notice] = "The changes have been successfully committed"
       respond_to do |format|
-        format.html { redirect_to namespace_project_blob_path(@project.namespace, @project, File.join(@target_branch, @file_path)) }
+        format.html do
+          url = if params[:create_merge_request]
+            new_mr_path_from_push_event(current_user.recent_push(@project.id), @ref)
+          else
+            namespace_project_blob_path(@project.namespace, @project, File.join(@target_branch, @file_path))
+          end
+          redirect_to url
+        end
         format.json { render json: { message: "success", filePath: namespace_project_blob_path(@project.namespace, @project, File.join(@target_branch, @file_path)) } }
       end
     else
@@ -52,7 +59,14 @@ class Projects::BlobController < Projects::ApplicationController
     if result[:status] == :success
       flash[:notice] = "Your changes have been successfully committed"
       respond_to do |format|
-        format.html { redirect_to after_edit_path }
+        format.html do
+          url = if params[:create_merge_request]
+            new_mr_path_from_push_event(current_user.recent_push(@project.id), @ref)
+          else
+            after_edit_path
+          end
+          redirect_to url
+        end
         format.json { render json: { message: "success", filePath: after_edit_path } }
       end
     else

app/helpers/merge_requests_helper.rb

 module MergeRequestsHelper
-  def new_mr_path_from_push_event(event)
-    target_project = event.project.forked_from_project || event.project
-    new_namespace_project_merge_request_path(
-      event.project.namespace,
-      event.project,
-      new_mr_from_push_event(event, target_project)
-    )
-  end
-
-  def new_mr_path_for_fork_from_push_event(event)
-    new_namespace_project_merge_request_path(
-      event.project.namespace,
-      event.project,
-      new_mr_from_push_event(event, event.project.forked_from_project)
-    )
-  end
-
-  def new_mr_from_push_event(event, target_project)
-    {
-      merge_request: {
-        source_project_id: event.project.id,
-        target_project_id: target_project.id,
-        source_branch: event.branch_name,
-        target_branch: target_project.repository.root_ref
-      }
-    }
-  end
-
   def mr_css_classes(mr)
     classes = "merge-request"
     classes << " closed" if mr.closed?

app/views/projects/blob/edit.html.haml

@@ -23,9 +23,17 @@
       .col-sm-10
         = text_field_tag 'new_branch', @ref, class: "form-control"
 
+    .form-group.destination
+      .col-sm-offset-2.col-sm-10
+        .checkbox
+          = label_tag :create_merge_request do
+            = check_box_tag :create_merge_request, 1, false
+            Start a new merge request
+
     = hidden_field_tag 'last_commit', @last_commit
     = hidden_field_tag 'content', '', id: "file-content"
     = hidden_field_tag 'from_merge_request_id', params[:from_merge_request_id]
+    = hidden_field_tag 'original_branch', @ref
     = render 'projects/commit_button', ref: @ref, cancel_path: @after_edit_path
 
 :javascript

app/views/projects/blob/new.html.haml

@@ -17,7 +17,15 @@
         .col-sm-10
           = text_field_tag 'new_branch', @ref, class: "form-control js-quick-submit"
 
+      .form-group.destination
+        .col-sm-offset-2.col-sm-10
+          .checkbox
+            = label_tag :create_merge_request do
+              = check_box_tag :create_merge_request, 1, false
+              Start a new merge request
+
     = hidden_field_tag 'content', '', id: 'file-content'
+    = hidden_field_tag 'original_branch', @ref
     = render 'projects/commit_button', ref: @ref,
               cancel_path: namespace_project_tree_path(@project.namespace, @project, @id)