choice with other + some development tips

Form/Type/ChoiceWithOtherType.php

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+<?php
+namespace Chill\CustomFieldsBundle\Form\Type;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolverInterface;
+
+/**
+ * Return a choice widget with an "other" option
+ * 
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ *
+ */
+class ChoiceWithOtherType extends AbstractType
+{
+    
+    
+     /* (non-PHPdoc)
+      * @see \Symfony\Component\Form\AbstractType::buildForm()
+      */
+     public function buildForm(FormBuilderInterface $builder, array $options) 
+     {
+        //add an 'other' entry in choices array
+        $options['choices']['_other'] = '__other__';
+        //ChoiceWithOther must always be expanded
+        $options['expanded'] = true;
+        
+        $builder
+            ->add('_other', 'text', array('required' => false))
+            ->add('_choices', 'choice', $options)
+            ;
+    
+     }
+
+     /* (non-PHPdoc)
+      * @see \Symfony\Component\Form\AbstractType::setDefaultOptions()
+      */
+     public function setDefaultOptions(OptionsResolverInterface $resolver) 
+     {
+        $resolver
+            ->setRequired(array('choices'))
+            ->setAllowedTypes(array('choices' => array('array')))
+            ->setDefaults(array('multiple' => false))
+            ;
+    
+     }
+
+
+    public function getName()
+    {
+        return 'choice_with_other';
+    }
+}

Form/Type/ChoicesListType.php

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+<?php
+namespace Chill\CustomFieldsBundle\Form\Type;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\Form\FormEvent;
+use Symfony\Component\Form\FormEvents;
+
+class ChoicesListType extends AbstractType
+{
+    
+    private $defaultLocale;
+    
+    public function __construct($defaultLocale)
+    {
+        $this->defaultLocale = $defaultLocale;
+    }
+
+    /* (non-PHPdoc)
+     * @see \Symfony\Component\Form\AbstractType::buildForm()
+     */
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $locale = $this->defaultLocale;
+        
+        $builder->add('name', 'translatable_string')
+            ->add('active', 'checkbox', array(
+                'required' => false,
+                'empty_data' => true
+            ))
+            ->add('slug', 'hidden', array(
+                
+            ))
+            ->addEventListener(FormEvents::SUBMIT, function(FormEvent $event) use ($locale){
+                $form = $event->getForm();
+                $data = $event->getData();
+
+                $formData = $form->getData();
+                
+                if (NULL === $formData['slug']) {
+                    $slug = $form['name'][$locale]->getData();
+                    $slug= strtolower($slug);
+                    $slug= preg_replace('/[^a-zA-Z0-9 -]/','', $slug); // only take alphanumerical characters, but keep the spaces and dashes too...
+                    $slug= str_replace(' ','-', $slug); // replace spaces by dashes
+                    
+                    $data['slug'] = $slug;
+                    $event->setData($data);
+                } else {
+                    $data['slug'] = $formData['slug'];
+                    $event->setData($data);
+                }
+            })
+        ;
+    }
+    
+    
+    /*
+     *
+     * @see \Symfony\Component\Form\FormTypeInterface::getName()
+     */
+    public function getName()
+    {
+        return 'cf_choices_list';
+    }
+
+}

Form/Type/ChoicesType.php

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+<?php
+namespace Chill\CustomFieldsBundle\Form\Type;
+
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+
+
+/**
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ *        
+ */
+class ChoicesType extends AbstractType
+{    
+    public function getName()
+    {
+        return 'cf_choices';
+    }
+    
+    public function getParent()
+    {
+        return 'collection';
+    }
+
+     
+}