[Form] fixed CollectionType options

Author: HeahDude

reference/forms/types/collection.rst

@@ -12,15 +12,15 @@ relationships (e.g. a product from where you can manage many related product
 photos).
 
 +-------------+-----------------------------------------------------------------------------+
-| Rendered as | depends on the `entry_type`_ option                                         |
+| Rendered as | depends on the `type`_ option                                               |
 +-------------+-----------------------------------------------------------------------------+
 | Options     | - `allow_add`_                                                              |
 |             | - `allow_delete`_                                                           |
 |             | - `delete_empty`_                                                           |
-|             | - `entry_options`_                                                          |
-|             | - `entry_type`_                                                             |
+|             | - `options`_                                                                |
 |             | - `prototype`_                                                              |
 |             | - `prototype_name`_                                                         |
+|             | - `type`_                                                                   |
 +-------------+-----------------------------------------------------------------------------+
 | Inherited   | - `by_reference`_                                                           |
 | options     | - `empty_data`_                                                             |
@@ -276,8 +276,8 @@ form you have to set this option to true. However, existing collection entries
 will only be deleted if you have the allow_delete_ option enabled. Otherwise
 the empty values will be kept.
 
-entry_options
-~~~~~~~~~~~~~
+options
+~~~~~~~
 
 **type**: ``array`` **default**: ``array()``
 
@@ -292,28 +292,17 @@ type::
     // ...
 
     $builder->add('favorite_cities', CollectionType::class, array(
-        'entry_type'   => ChoiceType::class,
+        'entry_type'   => 'choice,
         'entry_options'  => array(
             'choices'  => array(
-                'Nashville' => 'nashville',
-                'Paris'     => 'paris',
-                'Berlin'    => 'berlin',
-                'London'    => 'london',
+                'nashville' => 'Nashville',
+                'paris'     => 'Paris',
+                'berlin'    => 'Berlin',
+                'london'    => 'London',
             ),
         ),
     ));
 
-entry_type
-~~~~~~~~~~
-
-**type**: ``string`` or :class:`Symfony\\Component\\Form\\FormTypeInterface` **required**
-
-This is the field type for each item in this collection (e.g. ``TextType``,
-``ChoiceType``, etc). For example, if you have an array of email addresses,
-you'd use the :doc:`EmailType </reference/forms/types/email>`. If you want
-to embed a collection of some other form, create a new instance of your
-form type and pass it as this option.
-
 prototype
 ~~~~~~~~~
 
@@ -362,6 +351,17 @@ If you have several collections in your form, or worse, nested collections
 you may want to change the placeholder so that unrelated placeholders are
 not replaced with the same value.
 
+type
+~~~~
+
+**type**: ``string`` or :class:`Symfony\\Component\\Form\\FormTypeInterface` **required**
+
+This is the field type for each item in this collection (e.g. ``TextType``,
+``ChoiceType``, etc). For example, if you have an array of email addresses,
+you'd use the :doc:`EmailType </reference/forms/types/email>`. If you want
+to embed a collection of some other form, create a new instance of your
+form type and pass it as this option.
+
 Inherited Options
 -----------------