Merge pull request activeadmin#2071 from shekibobo/has-many-allow-destroy

Add :allow_destroy option to has_many forms

Author: seanlinsley

docs/5-forms.md

@@ -37,3 +37,32 @@ Then implement app/views/admin/posts/_form.html.erb:
       <%= f.inputs :title, :body %>
       <%= f.actions :commit %>
     <% end %>
+
+## Nested Resources
+
+You can create forms with nested models using the `has_many` method:
+
+    ActiveAdmin.register Post do
+
+      form do |f|
+        f.inputs "Details" do
+          f.input :title
+          f.input :published_at, :label => "Publish Post At"
+        end
+        f.inputs "Content" do
+          f.input :body
+        end
+        f.inputs do
+          f.has_many :categories, :allow_destroy => true do |cf|
+            cf.input :title
+          end
+        end
+        f.actions
+      end
+
+    end
+
+The `:allow_destroy` option will add a checkbox to the end of the nested form allowing
+removal of the child object upon submission. Be sure to set `:allow_destroy => true`
+on the association to use this option.
+

lib/active_admin/form_builder.rb

@@ -60,6 +60,10 @@ def has_many(association, options = {}, &block)
           contents += template.content_tag(:li, :class => 'has_many_delete') do
             template.link_to I18n.t('active_admin.has_many_delete'), "#", :onclick => "$(this).closest('.has_many_fields').remove(); return false;", :class => "button"
           end
+        elsif options[:allow_destroy]
+          has_many_form.input :_destroy, :as => :boolean, :wrapper_html => {:class => "has_many_remove"},
+                                                          :label => I18n.t('active_admin.has_many_remove')
+
         end
 
         contents

lib/active_admin/locales/bg.yml

@@ -19,6 +19,7 @@ bg:
     download: "Свали:"
     has_many_new: "Добави нов %{model}"
     has_many_delete: "Изтрий"
+    has_many_remove: "Премахнете"
     filter: "Филтър"
     clear_filters: "Изчисти филтрите"
     search_field: "Търси %{field}"

lib/active_admin/locales/ca.yml

@@ -20,6 +20,7 @@ ca:
     download: "Descarregar:"
     has_many_new: "Afegir %{model}"
     has_many_delete: "Eliminar"
+    has_many_remove: "Treure"
     filter: "Filtrar"
     clear_filters: "Treure filtres"
     search_field: "Cercar %{field}"

lib/active_admin/locales/cs.yml

@@ -21,6 +21,7 @@ cs:
     download: "Stáhnout:"
     has_many_new: "Přidat nový"
     has_many_delete: "Odstranit"
+    has_many_remove: "Odstranit"
     filter: "Filtrovat"
     clear_filters: "Vyčistit filtry"
     search_field: "Prohledat %{field}"

lib/active_admin/locales/da.yml

@@ -19,6 +19,7 @@ da:
     download: "Download:"
     has_many_new: "Tilføj ny(t) %{model}"
     has_many_delete: "Slet"
+    has_many_remove: "Fjern"
     filter: "Filtrer"
     clear_filters: "Ryd filtre"
     search_field: "Søg %{field}"

lib/active_admin/locales/de-CH.yml

@@ -21,6 +21,7 @@
     download: "Herunterladen:"
     has_many_new: "%{model} hinzufügen"
     has_many_delete: "Löschen"
+    has_many_remove: "Entfernen"
     filter: "Filtern"
     clear_filters: "Filter entfernen"
     search_field: "Durchsuche %{field}"

lib/active_admin/locales/de.yml

@@ -21,6 +21,7 @@ de:
     download: "Herunterladen:"
     has_many_new: "%{model} hinzufügen"
     has_many_delete: "Löschen"
+    has_many_remove: "Entfernen"
     filter: "Filtern"
     clear_filters: "Filter entfernen"
     search_field: "Durchsuche %{field}"

lib/active_admin/locales/en-GB.yml

@@ -21,6 +21,7 @@
     download: "Download:"
     has_many_new: "Add New %{model}"
     has_many_delete: "Delete"
+    has_many_remove: "Remove"
     filter: "Filter"
     clear_filters: "Clear Filters"
     search_field: "Search %{field}"
@@ -80,4 +81,4 @@
         sign_in: "Sign in"
         forgot_your_password: "Forgot your password?"
         sign_in_with_omniauth_provider: "Sign in with %{provider}"
-        
+        

lib/active_admin/locales/en.yml

@@ -21,6 +21,7 @@ en:
     download: "Download:"
     has_many_new: "Add New %{model}"
     has_many_delete: "Delete"
+    has_many_remove: "Remove"
     filter: "Filter"
     clear_filters: "Clear Filters"
     search_field: "Search %{field}"