I have 2 entities (A and B) with a Many to One relationship between them.
I create my form with the A entity and i use an entity field (dropdown list) to display the rows in the B entity. I use a query builder to filter them. If don't change the values in the list (ie. with ajax), everything is working fine.
But if I change dynamicly the values in the dropdown, when I submit the form I have this error "This value is invalid"
It's because the submitted value isn't included in the "array" returned by the query builder.
It seems that this validation is automatic in symfony for entity field (I don't use any asserts on this field). I'd like to get rid of this. But how ?
To answer my question a bit more explicitly :
The PRE_BIND form event can be redefined with an event listener in the function BuildForm like this example :
$factory = $builder->getFormFactory();
$builder->addEventListener(FormEvents::PRE_BIND, function($event) use ($factory) {
$form = $event->getForm();
$case = $event->getData();
$id = $case['id'];
if ($case) {
$form->remove('id');
$form->add($factory->createNamed('hidden', 'id',$id, array()));
}
});
For Symfony 2.3 you need to add the auto_initialize = false and change the order of params:
$form->add($factory->createNamed('id', 'hidden', $id, array('auto_initialize' => false)));
Related
// buildForm
...
->add('book', 'entity', [
'class' => 'MyBundle\Entity\Book',
'choices' => [],
])
->addEventSubscriber(new MySubscriber());
The field book gets filled through javascript and gets the title of the book.
What I need to do is check if the book already exists in my db, otherwise I create it. I created a subscriber for that works well.
The problem is that I couldn't get rid of the error emitted by $form->handleRequest($request)->isValid(), Which is weird because I edited data in the request this way in my subscriber:
public function preSetData(FormEvent $event)
{
...
$author = $event->getData();
$requestForm = $this->request->request->get('mybundle_author');
$bookTitle = $requestForm['book'];
// if this book title doesn't exist -> create it
...
$requestForm['book] = (string) $book->getId();
$this->request->request->set('mybundle_author', $requestForm);
}
No matter what FormEvents I used, it emits the error that book value is not valid
I crossed a similar problem with the entity type.
The problem is that the new Entity is not marked as managed, and the entity type is focused on selecting existing entities. You could either pass the ObjectManager to the subscriber and set the entity as managed (with persist), or get rid of the validation error yourself. The latter is cleaner, but may require more work.
Removing the option choices fixed the problem.
My subscriber is correct but in my form I had to edit the field
// buildForm
...
->add('book', 'entity', [
'class' => 'MyBundle\Entity\Book',
//'choices' => [], // removing this fixed the problem
])
->addEventSubscriber(new MySubscriber());
Taking the below as an example, OrderType is based on the entity Order. The form that is required needs to contain the following two EntityType dropdowns within it:
Category (this does not exist in Order - it is just to subset the dropdown of Product to make it more manageable)
Product
The identifying Category variables (Category_id and CatName) only exists within the Product entity (the Order can include multiple Products) and as a result, Symfony throws back an error saying:
Neither the property "category_id" nor one of the methods "getcategory_id()", "category_id()", "iscategory_id()", "hascategory_id()", "__get()" exist and have public access in class "AppBundle\Entity\Order".
Is there a way that this Category field can be included even though it doesn't exist in the Order entity?
It doesn't seem right to add category_id to the Order entity. I was thinking of something along the lines of below using 'mapped'=>'false' but I can't get it to work:
$builder
->add('category_id','entity',array(
'class'=>'AppBundle:Product',
'placeholder' => '-- Choose --',
'choice_label'=>'CatName',
'mapped'=>'false',
'query_builder'=>function(EntityRepository $er) {
return $er->createQueryBuilder('p');
}))
...and then after an Ajax response, feed in the category back in with $category?
->add('products','entity',array(
'class'=>'AppBundle:Order',
'placeholder' => '-- Choose --',
'choice_label'=>'ProductName',
'query_builder'=>function(EntityRepository $er, $category ) {
return $er->createQueryBuilder('p')
->where('p.category_id = :id')
->setParameter('id', $category )
->orderBy('p.ProductName','ASC');
}));
}
As you say, adding a Category property to the Order entity just for forms is less than ideal. What I would do is make a OrderCategoryType and pass in Order and Category as an array.
// Controller
$order = new Order();
$category = new Category(); // Or create from $order->getProduct()
$data = ['order' => $order, 'category' => $category);
$form = $this->createFormBuilder($data)
->add('order',new OrderType(),
->add('category',new CategoryType()
);
You will have to do some messing around to keep everything in sync but it should work just fine.
My Product entity has the following structure:
private $id;
private $title;
/**
* #ManyToOne(targetEntity="Category")
* #JoinColumn(name="cat_id", referencedColumnName="id")
*/
private $category;
Category have nested structure. And each level of nesting is shown in 5 separate fields:
In class form code, I solve it in this way:
$builder
->add('cat_1', 'entity', array(
...
'query_builder' => function() { return someSelectLogic1(); }
))
->add('cat_2', 'entity', array(
...
'query_builder' => function() { return someSelectLogic2(); }
))
->add('cat_3', 'entity', array(
...
'query_builder' => function() { return someSelectLogic3(); }
))
->add('cat_4', 'entity', array(
...
'query_builder' => function() { return someSelectLogic4(); }
))
->add('cat_5', 'entity', array(
...
'query_builder' => function() { return someSelectLogic5(); }
))
Now I need to know which field is filled in the last turn and pass the value of that field in the entity property.
In all that I do not like:
complex logic to determine which field with category was filled at the end
each of these fields is not tied to the entity 'mapped' => false
1) What the right way to organize code of my form?
2) And is there a way to bring these fields into a separate class which will deal with the logic of determining which category was chosen in the end?
I would suggest the following:
1) Create a new custom form field type and put all those entity in there.
This process is not much different from ordinary creation of form type. Just enclose those fields in it's own buildForm() and that should do the trick. Docs.
2) Mark all those entity fields with property "property_path => false".
Clearly you wont be storing these values inside your model.
3) Add two more fields: chosen and lastOne.
Now, this might be tricky: I would either set the chosen to text type (basically, generic type) or would use entity as well. If you go for entity you would need to include all possible answers from all entity fields. As for the lastOne set it to text as it will reflect which field (by name) was selected last.
Either way, those two fields will be invisible. Don't forget to set property_path to false for lastOne field.
4) Finally, add ValueTransformer (docs) which will contain logic to "see" which field was selected last.
Now, I dealt with it only once and don't understand it just quite yet, so your best bet would be trial and error with examples from official docs, unfortunately.
What basically you should do is to, within value-transformer, read the value of field lastOne. This will give you the name of field which was selected last. Then, using that value, read the actual last value selected. Last, set that value (object, if you've went for entity type, or it's ID otherwise) to chosen field.
That should basically do the thing.
As for the JS, I don't know if you're using any framework but I will assume jQuery. You will need to set lastOne field as your selecting items in your form.
$(function(){
$('#myform').find('select').on('change', function(){
var $this = $(this);
$this.closest('form').find('#__ID_OF_YOUR_LASTONE_FIELD').val($this.attr('name'));
});
});
I'm sorry I cannot provide you with code samples for PHP right now. It's a bit late here and will do my best to further update this answer tomorrow.
Suppose to have an entity in Symfony2 that has a field bestfriend, which is a User entity selected from a list of User entities that satisfy a complex requirement.
You can render this field in a form by specifying that it is an entity field type, i.e.:
$builder->add('bestfriend', 'entity', array(
'class' => 'AcmeHelloBundle:User',
'property' => 'username',
));
This form field is rendered as a <select>, where each one of the displayed values is in the form:
<option value="user_id">user_username</option>
So, one would render the field by using the <optgroup> tags to highlight such special feature of the friends.
Following this principle, I created a field type, namely FriendType, that creates the array of choices as in this answer, which is rendered as follows:
$builder->add('bestfriend', new FriendType(...));
The FriendType class creates a <select> organized with the same <option>s but organized under <optgroup>s.
Here I come to the problem! When submitting the form, the framework recognize that the user field is not an instance of User, but it is an integer. How can I let Symfony2 understand that the passed int is the id of an entity of type User?
Here follows my solution.
Notice that it is not mentioned in the Symfony2 official docs, but it works! I exploited the fact that the entity field type is child of choice.
Hence, you can just pass the array of choices as a param.
$builder->add('bestfriend', 'entity', array(
'class' => 'AcmeHelloBundle:User',
'choices' => $this->getArrayOfEntities()
));
where the function getArrayOfEntities() is a function that fills the choice list with the friends of my friends, organized by my friends:
private function getArrayOfEntities(){
$repo = $this->em->getRepository('AcmeHelloBundle:User');
$friends = $repo->findAllFriendByComplexCriteria(...);
$list = array();
foreach($friends as $friend){
$name = $friend->getUsername();
if(count($friend->getFriends())>0){
$list[$name] = array();
foreach($friend->getFriends() as $ff){
$list[$name][$ff->getUsername()] = $ff;
}
}
}
return $list;
}
I know the example could be meaningless, but it works...
PS: You need to pass the entity manager to let it working...
I have few fields on the form like name, description, timestamp.
Now in the form I am only displaying name and description but not timestamp.
public function __construct()
{
$this->setTimestamp(new \DateTime());
}
Now in my database, it is coming as null.
Either doctrine is not executing constructor or those fields are set to null when displayed in form.
Even though I am not displaying them.
You need put the timestamp field in your FormType.
If you don't need to show it, just hide the field and set default value.
Something like that:
$builder->add('timestamp', 'hidden', array(
'data' => new \DateTime(),
));
Don't forget {{form_rest(form)}} at end of the twig template to send all hidden fields.