From f3de0545f38385a3861e68163a6b4a560ecdc997 Mon Sep 17 00:00:00 2001
From: Damiano Ciarla <damiano.ciarla@gmail.com>
Date: Thu, 17 Apr 2014 12:32:12 +0200
Subject: [PATCH] Added callback after ajax request

---
 .gitignore                                 |  2 ++
 Form/Type/SelectCityFormType.php           | 13 +++++++++++++
 Resources/public/js/select_city.js         | 20 ++++++++++++++++----
 Resources/views/Form/select_city.html.twig | 18 ++++++++++--------
 4 files changed, 41 insertions(+), 12 deletions(-)

diff --git a/.gitignore b/.gitignore
index b62fece..03a2f6c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,8 @@ vendor/*
 web/uploads/*
 web/bundles/*
 
+.idea
+
 # Configuration files
 app/config/parameters.ini
 app/config/parameters.yml
diff --git a/Form/Type/SelectCityFormType.php b/Form/Type/SelectCityFormType.php
index c5f5246..fee7ccb 100755
--- a/Form/Type/SelectCityFormType.php
+++ b/Form/Type/SelectCityFormType.php
@@ -8,6 +8,7 @@
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\Form\FormEvents;
 use Symfony\Component\Form\FormEvent;
+use Symfony\Component\Form\FormView;
 use DCS\Form\SelectCityFormFieldBundle\Model;
 
 class SelectCityFormType extends AbstractType
@@ -37,6 +38,14 @@ public function __construct(
         $this->cityManager = $cityManager;
     }
 
+    public function buildView(FormView $view, FormInterface $form, array $options)
+    {
+        $view->vars = array_merge($view->vars, array(
+            'callback_country'  => $options['callback_country'],
+            'callback_region'   => $options['callback_region'],
+        ));
+    }
+
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
         $builder
@@ -135,12 +144,16 @@ public function setDefaultOptions(OptionsResolverInterface $resolver)
             'country_required'      => true,
             'region_required'       => true,
             'city_required'         => true,
+            'callback_country'      => 'callbackCountry',
+            'callback_region'       => 'callbackRegion',
         ));
 
         $resolver->setAllowedTypes(array(
             'country_required'      => 'bool',
             'region_required'       => 'bool',
             'city_required'         => 'bool',
+            'callback_country'      => 'string',
+            'callback_region'       => 'string',
         ));
     }
 
diff --git a/Resources/public/js/select_city.js b/Resources/public/js/select_city.js
index 2fabb79..5ecf978 100755
--- a/Resources/public/js/select_city.js
+++ b/Resources/public/js/select_city.js
@@ -1,12 +1,12 @@
 window.select_region_base_url = null;
 window.select_city_base_url = null;
 window.select_city_instance = [];
-window.select_city = function (countryId, regionId, cityId) {
+window.select_city = function (countryId, regionId, cityId, callbackCountry, callbackRegion) {
     var countryElement = document.getElementById(countryId);
     var regionElement = document.getElementById(regionId);
     var cityElement = document.getElementById(cityId);
 
-    var loadJsonData = function (url, element, param) {
+    var loadJsonData = function (url, element, param, type) {
         var xmlhttp;
         if (window.XMLHttpRequest) {
             xmlhttp = new XMLHttpRequest();
@@ -24,6 +24,18 @@ window.select_city = function (countryId, regionId, cityId) {
                     option.value = info.id;
                     element.appendChild(option);
                 }
+                switch (type) {
+                    case 'country':
+                        if (callbackCountry !== null) {
+                            callbackCountry(data, element);
+                        }
+                        break;
+                    case 'region':
+                        if (callbackRegion !== null) {
+                            callbackRegion(data, element);
+                        }
+                        break;
+                }
             }
         };
 
@@ -39,12 +51,12 @@ window.select_city = function (countryId, regionId, cityId) {
         var url = window.select_region_base_url.replace("countryId", countryElement.options[countryElement.selectedIndex].value);
         emptyOptionFromSelect(regionElement);
         emptyOptionFromSelect(cityElement);
-        loadJsonData(url, regionElement, 'regionName');
+        loadJsonData(url, regionElement, 'regionName', 'country');
     };
 
     regionElement.onchange = function () {
         var url = window.select_city_base_url.replace("regionId", regionElement.options[regionElement.selectedIndex].value);
         emptyOptionFromSelect(cityElement);
-        loadJsonData(url, cityElement, 'cityName');
+        loadJsonData(url, cityElement, 'cityName', 'region');
     };
 };
\ No newline at end of file
diff --git a/Resources/views/Form/select_city.html.twig b/Resources/views/Form/select_city.html.twig
index e47cdae..747c338 100755
--- a/Resources/views/Form/select_city.html.twig
+++ b/Resources/views/Form/select_city.html.twig
@@ -2,15 +2,17 @@
 {% spaceless %}
     {{ form_widget(form) }}
     <script type="text/javascript">
-    window.onload = function () {
-        if (window.select_region_base_url === null) {
-            window.select_region_base_url = '{{ path("dcs_select_city_form_field_api_regions", {'countryId': 'countryId'}) }}';
+        window.onload = function () {
+            if (window.select_region_base_url === null) {
+                window.select_region_base_url = '{{ path("dcs_select_city_form_field_api_regions", {'countryId': 'countryId'}) }}';
+            }
+            if (window.select_city_base_url === null) {
+                window.select_city_base_url = '{{ path("dcs_select_city_form_field_api_cities", {'regionId': 'regionId'}) }}';
+            }
+            var callbackCountry = typeof {{ form.vars.id ~ '_' ~ callback_country }} != 'undefined' ? {{ form.vars.id ~ '_' ~ callback_country }} : null;
+            var callbackRegion = typeof {{ form.vars.id ~ '_' ~ callback_region }} != 'undefined' ? {{ form.vars.id ~ '_' ~ callback_region }} : null;
+            window.select_city_instance.push(new window.select_city('{{ form.country.vars.id }}', '{{ form.region.vars.id }}', '{{ form.city.vars.id }}', callbackCountry, callbackRegion));
         }
-        if (window.select_city_base_url === null) {
-            window.select_city_base_url = '{{ path("dcs_select_city_form_field_api_cities", {'regionId': 'regionId'}) }}';
-        }
-        window.select_city_instance.push(new window.select_city('{{ form.country.vars.id }}', '{{ form.region.vars.id }}', '{{ form.city.vars.id }}'));
-    }
     </script>
 {% endspaceless %}
 {% endblock %}
\ No newline at end of file