// 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());
Related
Im having some issues with a backpack project im doing.
What im trying to do change the way the PermissionsManager displays the check boxes when editing a user.
I have managed to create the custom CRUD files and i know that these files are working as i can edit some of the basic fields to add additional user fields.
The code im using to add the relationship is..
$this->crud->addField(
[ // relationship
'name' => 'permission', // the method on your model that defines the relationship
'type' => "relationship",
// OPTIONALS:
// 'label' => "Category",
// 'attribute' => "title", // attribute on model that is shown to user
// 'placeholder' => "Select a category", // placeholder for the select2 input
]
);
The error i get then i try to access the page is..
Undefined array key "relation_type"
Any ideas on what might be causing this?
thanks!
I think you are getting that error because the relationship name is permissions (plural) and not permission (singular).
Let me know if that's the case.
Cheers
I have a form with a field that has a ModelTransformer. In some cases (relying on the field's data) the field must be disabled (= ignored), because the underlying data is related to another Entity which cannot be linked in the current context. But that is not important for my question.
There are several questions about modifying form options and how to solve that. In short: Inside the event callback listening to PRE_SET_DATA, the field must be added again (replacing the existing field) and the old options can be read from the existing field before and readded to the new one. This is not an elegant solution from my point of view, but it is one.
Until there is a Transformer (ModelTransformer oder ViewTransformer) on the existing field, because that transformer will be removed, when the field is added again and cannot be (re)applied from inside the event callback.
In my case, I am lucky because on a disabled field, the ModelTransformer is not needed anymore, so I can do basically that:
$builder->add(
$builder
->create('myFieldWithModelTransformer', CheckboxType::class, [])
->addModelTransformer(new CallbackTransformer(
function($originalValue) {
return $originalValue; // or do some transformation
},
function($submittedValue) {
return $submittedValue; // or do some transformation
}
))
);
$builder->addEventListener(FormEvents::PRE_SET_DATA, function(FormEvent $event) use ($options) {
if (true) { //whatever condition relying on the underlying data
$event->getForm()->add('myFieldWithModelTransformer', CheckboxType::class, [
'disabled' => true,
]);
// this removed the ModelTransformer, which also cannot be added in the event context
}
);
But what If I want to change another option like required while preserving the ModelTransformer?
I'm trying to handle how a field within a CrudController stores or updates the data on the particular model in a completely custom way. I would like the traitStore() and traitUpdate() methods to ignore this field entirely, but would like the data to still be passed in via the request. This is specifically in reference to a many-many relationship using a select2_multiple field.
I would like it so that the relationship ID's are passed via the request object to the Store or Update methods, but I DO NOT want the traitStore() or traitUpdate() methods to actually perform updates on that particular field reference.
For example...
I have this field within my crud controller
$this->crud->addField(
[
'label' => "Groups",
'type' => 'select2_multiple',
'name' => 'groups',
'entity' => 'groups',
'attribute' => 'title',
'model' => "App\Models\Group",
'pivot' => true
]
);
And I'm overriding the Store and Update Methods like so.
public function store()
{
$this->crud->setValidation(UserRequest::class);
// WOULD LIKE TO SAVE EVERYTHING BUT IGNORE THE GROUPS FIELD
$response = $this->traitStore();
// DO WHATEVER I WANT WITH GROUPS AT THIS POINT
$groups = $request->groups
return $response;
}
public function update()
{
$this->crud->setValidation(UserRequest::class);
// WOULD LIKE TO SAVE EVERYTHING BUT IGNORE THE GROUPS FIELD
$response = $this->traitUpdate();
// DO WHATEVER I WANT WITH GROUPS AT THIS POINT
$groups = $request->groups
return $response;
}
Looking at my comments I would like to get a reference to the groups and handle updating the model however I want.
I've tried to unset the groups value in the request, unset($this->request{'groups'}), but it still updates / removes the relationships when I do that.
Here is what you need to do to remove the references from being updated by the CrudController.
public function update()
{
$this->crud->setValidation(UserRequest::class);
$request = clone $this->request;
$this->crud->request->request->remove('groups');
$this->crud->removeField('groups');
$groups = $request->groups
$response = $this->traitUpdate();
return $response;
}
I found an easy way to ignore/pass form field.
Example:
In your form fields have first_name, last_name, gender and in your database is only have fullname, gender then you wanna create/update the form, it will show Column not found: 'first_name' not found...,
How to fix it:
Add $fillable in the model and fill the array data with name field that you want to store/update. In example case $fillable = ['fullname', 'gender'];
Then, just use mutators inside the model too.
public function setFullnameAttribute(){
return $this->attributes['fullname'] = \Request::input('first_name') . ' ' . \Request::input('last_name');
}
NB: You should have hidden field name 'fullname' in your CrudController.
$this->crud->addField(['name' => 'fullname', 'type' => 'hidden']);
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...