Include jbuilder by default and rely on its scaffold generator to show json API. The default scaffold will now just create HTML if the user actively opts out of jbuilder

railties/lib/rails/generators/rails/app/templates/Gemfile

@@ -9,12 +9,12 @@ source 'https://rubygems.org'
 <%= assets_gemfile_entry %>
 <%= javascript_gemfile_entry -%>
 
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+gem 'jbuilder'
+
 # To use ActiveModel has_secure_password
 # gem 'bcrypt-ruby', '~> 3.0.0'
 
-# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
-# gem 'jbuilder'
-
 # Use unicorn as the app server
 # gem 'unicorn'
 

railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb

@@ -9,13 +9,8 @@ module Rails
       class_option :stylesheets, type: :boolean, desc: "Generate Stylesheets"
       class_option :stylesheet_engine, desc: "Engine for Stylesheets"
 
-      class_option :html, type: :boolean, default: true,
-                          desc: "Generate a scaffold with HTML output"
-
       def handle_skip
-        if !options[:html] || !options[:stylesheets]
+        @options = @options.merge(stylesheet_engine: false) if !options[:stylesheets]
-          @options = @options.merge(stylesheet_engine: false)
-        end
       end
 
       hook_for :scaffold_controller, required: true

railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb

@@ -10,17 +10,8 @@ module Rails
       class_option :orm, banner: "NAME", type: :string, required: true,
                          desc: "ORM to generate the controller for"
 
-      class_option :html, type: :boolean, default: true,
-                          desc: "Generate a scaffold with HTML output"
-
       argument :attributes, type: :array, default: [], banner: "field:type field:type"
 
-      def handle_skip
-        unless options[:html]
-          @options = @options.merge(template_engine: false, helper: false)
-        end
-      end
-
       def create_controller_files
         template "controller.rb", File.join('app/controllers', class_path, "#{controller_file_name}_controller.rb")
       end

railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb

@@ -7,95 +7,47 @@ class <%= controller_class_name %>Controller < ApplicationController
   before_action :set_<%= singular_table_name %>, only: [:show, :edit, :update, :destroy]
 
   # GET <%= route_url %>
-  # GET <%= route_url %>.json
   def index
     @<%= plural_table_name %> = <%= orm_class.all(class_name) %>
-
-    respond_to do |format|
-      <%- if options[:html] -%>
-      format.html # index.html.erb
-      <%- end -%>
-      format.json { render json: <%= "@#{plural_table_name}" %> }
-    end
   end
 
   # GET <%= route_url %>/1
-  # GET <%= route_url %>/1.json
   def show
-    respond_to do |format|
-      <%- if options[:html] -%>
-      format.html # show.html.erb
-      <%- end -%>
-      format.json { render json: <%= "@#{singular_table_name}" %> }
-    end
   end
 
-  <%- if options[:html] -%>
   # GET <%= route_url %>/new
-  # GET <%= route_url %>/new.json
   def new
     @<%= singular_table_name %> = <%= orm_class.build(class_name) %>
-
-    respond_to do |format|
-      format.html # new.html.erb
-      format.json { render json: <%= "@#{singular_table_name}" %> }
-    end
   end
 
   # GET <%= route_url %>/1/edit
   def edit
   end
-  <%- end -%>
 
   # POST <%= route_url %>
-  # POST <%= route_url %>.json
   def create
     @<%= singular_table_name %> = <%= orm_class.build(class_name, "#{singular_table_name}_params") %>
 
-    respond_to do |format|
     if @<%= orm_instance.save %>
-        <%- if options[:html] -%>
+      redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully created.'" %>
-        format.html { redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully created.'" %> }
-        <%- end -%>
-        format.json { render json: <%= "@#{singular_table_name}" %>, status: :created, location: <%= "@#{singular_table_name}" %> }
     else
-        <%- if options[:html] -%>
+      render action: "new"
-        format.html { render action: "new" }
-        <%- end -%>
-        format.json { render json: <%= "@#{orm_instance.errors}" %>, status: :unprocessable_entity }
-      end
     end
   end
 
   # PATCH/PUT <%= route_url %>/1
-  # PATCH/PUT <%= route_url %>/1.json
   def update
-    respond_to do |format|
     if @<%= orm_instance.update("#{singular_table_name}_params") %>
-        <%- if options[:html] -%>
+      redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully updated.'" %>
-        format.html { redirect_to @<%= singular_table_name %>, notice: <%= "'#{human_name} was successfully updated.'" %> }
-        <%- end -%>
-        format.json { head :no_content }
     else
-        <%- if options[:html] -%>
+      render action: "edit"
-        format.html { render action: "edit" }
-        <%- end -%>
-        format.json { render json: <%= "@#{orm_instance.errors}" %>, status: :unprocessable_entity }
-      end
     end
   end
 
   # DELETE <%= route_url %>/1
-  # DELETE <%= route_url %>/1.json
   def destroy
     @<%= orm_instance.destroy %>
-
+    redirect_to <%= index_helper %>_url
-    respond_to do |format|
-      <%- if options[:html] -%>
-      format.html { redirect_to <%= index_helper %>_url }
-      <%- end -%>
-      format.json { head :no_content }
-    end
   end
 
   private

railties/test/generators/scaffold_controller_generator_test.rb

@@ -31,12 +31,10 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
       assert_instance_method :create, content do |m|
         assert_match(/@user = User\.new\(user_params\)/, m)
         assert_match(/@user\.save/, m)
-        assert_match(/@user\.errors/, m)
       end
 
       assert_instance_method :update, content do |m|
         assert_match(/@user\.update\(user_params\)/, m)
-        assert_match(/@user\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
@@ -127,18 +125,6 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
     assert_no_file "app/views/layouts/users.html.erb"
   end
 
-  def test_skip_html_if_required
-    run_generator [ "User", "name:string", "age:integer", "--no-html" ]
-    assert_no_file "app/helpers/users_helper.rb"
-    assert_no_file "app/views/users"
-
-    assert_file "app/controllers/users_controller.rb" do |content|
-      assert_no_match(/format\.html/, content)
-      assert_no_match(/def edit/, content)
-      assert_no_match(/def new/, content)
-    end
-  end
-
   def test_default_orm_is_used
     run_generator ["User", "--orm=unknown"]
 
@@ -176,7 +162,7 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
   def test_new_hash_style
     run_generator
     assert_file "app/controllers/users_controller.rb" do |content|
-      assert_match(/\{ render action: "new" \}/, content)
+      assert_match(/render action: "new"/, content)
     end
   end
 end

railties/test/generators/scaffold_generator_test.rb

@@ -41,12 +41,10 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
       assert_instance_method :create, content do |m|
         assert_match(/@product_line = ProductLine\.new\(product_line_params\)/, m)
         assert_match(/@product_line\.save/, m)
-        assert_match(/@product_line\.errors/, m)
       end
 
       assert_instance_method :update, content do |m|
         assert_match(/@product_line\.update\(product_line_params\)/, m)
-        assert_match(/@product_line\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
@@ -158,12 +156,10 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
       assert_instance_method :create, content do |m|
         assert_match(/@admin_role = Admin::Role\.new\(admin_role_params\)/, m)
         assert_match(/@admin_role\.save/, m)
-        assert_match(/@admin_role\.errors/, m)
       end
 
       assert_instance_method :update, content do |m|
         assert_match(/@admin_role\.update\(admin_role_params\)/, m)
-        assert_match(/@admin_role\.errors/, m)
       end
 
       assert_instance_method :destroy, content do |m|
@@ -257,11 +253,6 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase
     assert_no_file "app/assets/stylesheets/posts.css"
   end
 
-  def test_scaffold_generator_no_html
-    run_generator [ "posts", "--no-html" ]
-    assert_no_file "app/assets/stylesheets/scaffold.css"
-  end
-
   def test_scaffold_generator_no_javascripts
     run_generator [ "posts", "--no-javascripts" ]
     assert_file "app/assets/stylesheets/scaffold.css"