WebEditor: base form

app/controllers/tree_controller.rb

@@ -19,4 +19,12 @@ class TreeController < ProjectResourceController
       format.js { no_cache_headers }
     end
   end
+
+  def edit
+    @last_commit = @project.commits(@ref, @path, 1).first.sha
+  end
+
+  def update
+    last_commit = @project.commits(@ref, @path, 1).first.sha
+  end
 end

app/views/tree/_tree_file.html.haml

@@ -8,6 +8,7 @@
       = link_to "raw", project_blob_path(@project, @id), class: "btn very_small", target: "_blank"
       = link_to "history", project_commits_path(@project, @id), class: "btn very_small"
       = link_to "blame", project_blame_path(@project, @id), class: "btn very_small"
+      = link_to "Edit", edit_project_tree_path(@project, @id), class: "btn very_small"
   - if tree_file.text?
     - if gitlab_markdown?(tree_file.name)
       .file_content.wiki

app/views/tree/edit.html.haml

+.file_holder
+  Edit file: 
+  %span.file_name
+    = @tree.path.force_encoding('utf-8')
+    %br
+    = form_tag(project_tree_path(@project, @id), :method => :put) do
+      %textarea
+        = @tree.data
+      = hidden_field_tag 'last_commit', @last_commit
+      = submit_tag "Save"

config/routes.rb

@@ -183,7 +183,7 @@ Gitlab::Application.routes.draw do
     resources :compare, only: [:index, :create]
     resources :blame,   only: [:show], constraints: {id: /.+/}
     resources :blob,    only: [:show], constraints: {id: /.+/}
-    resources :tree,    only: [:show], constraints: {id: /.+/}
+    resources :tree,    only: [:show, :edit, :update], constraints: {id: /.+/}
     match "/compare/:from...:to" => "compare#show", as: "compare",
                     :via => [:get, :post], constraints: {from: /.+/, to: /.+/}