I posted this issue on the dev list as well (maybe not the right
place).
I have a "ContactInfo" entity that has a relationship to a "City"
entity (ManyToOne). I use an "entity" type to represent the "City" in
the form. I also have a "state" field (US) which is also of the
"entity" type. When the "state" is changed I use an AJAX request to
re-populate the "city" select with cities from the selected state.
I create the form like this:
$contact = $em->getRepository('Entity:ContactInfo')->findByXYZ(...);
$contact_form = $this->get('form.factory')->create(new
ContactInfoType($entity_manager), $contact);
At this point the "contact_form" is created, data is set, all is
well.
*** important ***: The "city" entity field is populated based on what
is in the database, not what was submitted.
If the state was changed, and a city from a different state than what
was originally in the database was chosen, everything fails. The form
is invalid, and the appropriate city is not set for the Contact. This
is because the "city" choice field was populated with cities from the
previously stored state when FormFactory::create() was called and the
selected city is not an available option in the "city" field.
I tried a messy solution to try to get around this, and passed the
state I wanted to populate the city choice with as an argument to the
constructor of ContactInfoType, but this caused the same problem, only
backwards. The new cities were populated and when it tried to
setData() on the original "contact_info" (as it was in the database),
it fails because *that* city isn't an option in the current form.
I'm at my wits end with this one. Any ideas? please...
Roger
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