Greetings,
I've been struggling with the new form component, particularly with
the "entity" choice fields.
I have a "ContactInfo" Entity with some scalar fields (first_name,
address, etc) and a ManyToOne relationship with "Cities". "Cities"
has a ManyToOne relationship with "States"
class ContactInfo {
/** orm:ManyToOne(...) */
private $cities;
function setCity($city) { $this->cities = $city; }
}
class Cities {
/** orm:ManyToOne(...) */
private $states
}
// In ContactType::buildForm()
$builder->add('city', 'entity', array(
'class' => 'Entity:Cities',
'query_builder' => $city_qb,
'property' => 'city_name',
'label' => 'City',
));
It's pretty much the same for the "state" field.
The first issue is a dependency on the EntityManager if we want to use
an "entity" field in the form (it requires a QueryBuilder). I passed
it in via the constructor and all is well, but if there is access to
the EntityManager from within AbstractType::buildForm().
The second issue: Every time, whether the city changes or not, an
UPDATE query is created for the city:
UPDATE cities SET city_name = ?, county = ?, latitude = ?, longitude
= ? WHERE city_id = ?
Parameters: [columbia, boone, 38.896439, -92.246277, '5533']
The city should *never* be updated. How do I stop this?
The third (***blocking***) issue:
I have an AJAX setup where I re-populate the "cities" drop down when
the state changes. If I do *not* change the state, the city saves
fine. If the state changes, $form->isValid() returns false and no
changes are committed to the database. The AJAX method in question
*only* replaces the "<option>" tags in the select and works as
expected.
Roger
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