Merge pull request #13434 from tanraya/local_variables

Use local variables in _form.html.erb generated by scaffold.

Conflicts:
	railties/CHANGELOG.md

railties/CHANGELOG.md

+*   Use local variables in `_form.html.erb` partial generated by scaffold.
+
+    *Andrew Kozlov*
+
 *   Add `config/initializers/callback_terminator.rb`
 
     Newly generated Rails apps have a new initializer called

railties/lib/rails/generators/erb/scaffold/templates/_form.html.erb

-<%%= form_for(@<%= singular_table_name %>) do |f| %>
-  <%% if @<%= singular_table_name %>.errors.any? %>
+<%%= form_for(<%= singular_table_name %>) do |f| %>
+  <%% if <%= singular_table_name %>.errors.any? %>
     <div id="error_explanation">
-      <h2><%%= pluralize(@<%= singular_table_name %>.errors.count, "error") %> prohibited this <%= singular_table_name %> from being saved:</h2>
+      <h2><%%= pluralize(<%= singular_table_name %>.errors.count, "error") %> prohibited this <%= singular_table_name %> from being saved:</h2>
 
       <ul>
-      <%% @<%= singular_table_name %>.errors.full_messages.each do |message| %>
+      <%% <%= singular_table_name %>.errors.full_messages.each do |message| %>
         <li><%%= message %></li>
       <%% end %>
       </ul>

railties/lib/rails/generators/erb/scaffold/templates/edit.html.erb

 <h1>Editing <%= singular_table_name.titleize %></h1>
 
-<%%= render 'form' %>
+<%%= render 'form', <%= singular_table_name %>: @<%= singular_table_name %> %>
 
 <%%= link_to 'Show', @<%= singular_table_name %> %> |
 <%%= link_to 'Back', <%= index_helper %>_path %>

railties/lib/rails/generators/erb/scaffold/templates/new.html.erb

 <h1>New <%= singular_table_name.titleize %></h1>
 
-<%%= render 'form' %>
+<%%= render 'form', <%= singular_table_name %>: @<%= singular_table_name %> %>
 
 <%%= link_to 'Back', <%= index_helper %>_path %>

railties/test/generators/scaffold_generator_test.rb

@@ -68,6 +68,17 @@ def test_scaffold_on_invoke
     end
     assert_no_file "app/views/layouts/product_lines.html.erb"
 
+    # Views local variables
+    assert_file "app/views/product_lines/_form.html.erb" do |test|
+      assert_no_match(/@product_line/, test)
+    end
+
+    %w(edit new).each do |view|
+      assert_file "app/views/product_lines/#{view}.html.erb" do |test|
+        assert_match(/product_line: @product_line/, test)
+      end
+    end
+
     # Helpers
     assert_file "app/helpers/product_lines_helper.rb"