Web Editor: save to new branch

app/controllers/projects/blob_controller.rb

 # Controller for viewing a file's blame
 class Projects::BlobController < Projects::ApplicationController
   include ExtractsPath
+  include ActionView::Helpers::SanitizeHelper
 
   # Raised when given an invalid file path
   class InvalidPathError < StandardError; end
@@ -21,11 +22,18 @@ class Projects::BlobController < Projects::ApplicationController
 
   def create
     file_path = File.join(@path, File.basename(params[:file_name]))
-    result = Files::CreateService.new(@project, current_user, params, @ref, file_path).execute
+    result = Files::CreateService.new(
+      @project,
+      current_user,
+      params.merge(new_branch: sanitized_new_branch_name),
+      @ref,
+      file_path
+    ).execute
 
     if result[:status] == :success
       flash[:notice] = "Your changes have been successfully committed"
-      redirect_to namespace_project_blob_path(@project.namespace, @project, File.join(@ref, file_path))
+      ref = sanitized_new_branch_name.presence || @ref
+      redirect_to namespace_project_blob_path(@project.namespace, @project, File.join(ref, file_path))
     else
       flash[:alert] = result[:message]
       render :new
@@ -41,7 +49,13 @@ class Projects::BlobController < Projects::ApplicationController
 
   def update
     result = Files::UpdateService.
-      new(@project, current_user, params, @ref, @path).execute
+      new(
+        @project,
+        current_user,
+        params.merge(new_branch: sanitized_new_branch_name),
+        @ref,
+        @path
+      ).execute
 
     if result[:status] == :success
       flash[:notice] = "Your changes have been successfully committed"
@@ -131,6 +145,8 @@ class Projects::BlobController < Projects::ApplicationController
       if from_merge_request
         diffs_namespace_project_merge_request_path(from_merge_request.target_project.namespace, from_merge_request.target_project, from_merge_request) +
           "#file-path-#{hexdigest(@path)}"
+      elsif sanitized_new_branch_name.present?
+        namespace_project_blob_path(@project.namespace, @project, File.join(sanitized_new_branch_name, @path))
       else
         namespace_project_blob_path(@project.namespace, @project, @id)
       end
@@ -140,4 +156,8 @@ class Projects::BlobController < Projects::ApplicationController
     # If blob edit was initiated from merge request page
     @from_merge_request ||= MergeRequest.find_by(id: params[:from_merge_request_id])
   end
+
+  def sanitized_new_branch_name
+    @new_branch ||= sanitize(strip_tags(params[:new_branch]))
+  end
 end

app/services/files/create_service.rb

@@ -38,7 +38,8 @@ module Files
       created_successfully = new_file_action.commit!(
         params[:content],
         params[:commit_message],
-        params[:encoding]
+        params[:encoding],
+        params[:new_branch]
       )
 
       if created_successfully

app/services/files/update_service.rb

@@ -23,7 +23,8 @@ module Files
       edit_file_action.commit!(
         params[:content],
         params[:commit_message],
-        params[:encoding]
+        params[:encoding],
+        params[:new_branch]
       )
 
       success

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

@@ -14,6 +14,13 @@
     = render 'projects/blob/editor', ref: @ref, path: @path, blob_data: @blob.data
     = render 'shared/commit_message_container', params: params,
              placeholder: "Update #{@blob.name}"
+
+    .form-group.branch
+      = label_tag 'branch', class: 'control-label' do
+        Branch
+      .col-sm-10
+        = text_field_tag 'new_branch', @ref, class: "form-control"
+
     = 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]

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

@@ -4,6 +4,13 @@
     = render 'projects/blob/editor', ref: @ref
     = render 'shared/commit_message_container', params: params,
              placeholder: 'Add new file'
+
+    .form-group.branch
+      = label_tag 'branch', class: 'control-label' do
+        Branch
+      .col-sm-10
+        = text_field_tag 'new_branch', @ref, class: "form-control"
+
     = hidden_field_tag 'content', '', id: 'file-content'
     = render 'projects/commit_button', ref: @ref,
               cancel_path: namespace_project_tree_path(@project.namespace, @project, @id)

lib/gitlab/satellite/files/edit_file_action.rb

@@ -10,7 +10,7 @@ module Gitlab
       # Returns false if committing the change fails
       # Returns false if pushing from the satellite to bare repo failed or was rejected
       # Returns true otherwise
-      def commit!(content, commit_message, encoding)
+      def commit!(content, commit_message, encoding, new_branch = nil)
         in_locked_and_timed_satellite do |repo|
           prepare_satellite!(repo)
 
@@ -42,10 +42,12 @@ module Gitlab
           end
 
 
+          target_branch = new_branch.present? ? "#{ref}:#{new_branch}" : ref
+
           # push commit back to bare repo
           # will raise CommandFailed when push fails
           begin
-            repo.git.push({ raise: true, timeout: true }, :origin, ref)
+            repo.git.push({ raise: true, timeout: true }, :origin, target_branch)
           rescue Grit::Git::CommandFailed => ex
             log_and_raise(PushFailed, ex.message)
           end

lib/gitlab/satellite/files/new_file_action.rb

@@ -9,7 +9,7 @@ module Gitlab
       # Returns false if committing the change fails
       # Returns false if pushing from the satellite to bare repo failed or was rejected
       # Returns true otherwise
-      def commit!(content, commit_message, encoding)
+      def commit!(content, commit_message, encoding, new_branch = nil)
         in_locked_and_timed_satellite do |repo|
           prepare_satellite!(repo)
 
@@ -45,9 +45,15 @@ module Gitlab
           # will raise CommandFailed when commit fails
           repo.git.commit(raise: true, timeout: true, a: true, m: commit_message)
 
+          target_branch = if new_branch.present? && !@project.empty_repo?
+                            "#{ref}:#{new_branch}"
+                          else
+                            "#{current_ref}:#{ref}"
+                          end
+
           # push commit back to bare repo
           # will raise CommandFailed when push fails
-          repo.git.push({ raise: true, timeout: true }, :origin, "#{current_ref}:#{ref}")
+          repo.git.push({ raise: true, timeout: true }, :origin, target_branch)
 
           # everything worked
           true