add simple form configure

config/initializers/simple_form.rb

@@ -0,0 +1,19 @@
+# Use this setup block to configure all options available in SimpleForm.
+SimpleForm.setup do |config|
+  config.wrappers :default, class: :input,
+    hint_class: :field_with_hint, error_class: :field_with_errors do |b|
+    b.use :html5
+    b.use :placeholder
+    b.use :label_input
+    b.use :hint,  wrap_with: { tag: :span, class: :hint }
+    b.use :error, wrap_with: { tag: :span, class: :error }
+
+  end
+
+  config.default_wrapper = :default
+  config.boolean_style = :nested
+  config.button_class = 'button'
+  config.error_notification_tag = :div
+
+  config.error_notification_class = 'error_notification'
+end

config/locales/simple_form.en.yml

@@ -0,0 +1,31 @@
+en:
+  simple_form:
+    "yes": 'Yes'
+    "no": 'No'
+    required:
+      text: 'required'
+      mark: '*'
+      # You can uncomment the line below if you need to overwrite the whole required html.
+      # When using html, text and mark won't be used.
+      # html: '<abbr title="required">*</abbr>'
+    error_notification:
+      default_message: "Please review the problems below:"
+    # Examples
+    # labels:
+    #   defaults:
+    #     password: 'Password'
+    #   user:
+    #     new:
+    #       email: 'E-mail to sign in.'
+    #     edit:
+    #       email: 'E-mail.'
+    # hints:
+    #   defaults:
+    #     username: 'User name to sign in.'
+    #     password: 'No special characters, please.'
+    # include_blanks:
+    #   defaults:
+    #     age: 'Rather not say'
+    # prompts:
+    #   defaults:
+    #     age: 'Select your age'

lib/templates/slim/scaffold/_form.html.slim

@@ -0,0 +1,10 @@
+= simple_form_for(@<%= singular_table_name %>) do |f|
+  = f.error_notification
+
+  .form-inputs
+<%- attributes.each do |attribute| -%>
+    = f.<%= attribute.reference? ? :association : :input %> :<%= attribute.name %>
+<%- end -%>
+
+  .form-actions
+    = f.button :submit