silex validator using last constraint from previous collection item - validation

Question

based on the tutorial for validation in silex i've created a constraint:
$constraint = new Assert\Collection([
'token' => [
new Assert\NotBlank(),
new Assert\Length(['min' => Constant::TOKEN_LENGTH, 'max' => Constant::TOKEN_LENGTH]),
],
'languageCode' => [
new Assert\NotBlank(),
new Assert\Choice(['choices' => [Constant::LANGUAGE_CODE_DE, Constant::LANGUAGE_CODE_EN]])
],
'startDate' => [
new Assert\NotBlank(),
new Assert\Date()
],
'endDate' => [
new Assert\NotBlank(),
new Assert\Date()
],
'duration' => [
new Assert\GreaterThanOrEqual(['value' => 1])
],
]);
which should match the following structures (here from json):
{
"token": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"languageCode": "DE",
"startDate": "2016-01-01",
"endDate": "2016-01-05",
"duration": 1
}
and
{
"token": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"languageCode": "DE",
"startDate": "2016-01-01",
"endDate": "2016-01-05"
}
While first example is validated as expected, the second (with the optional duration) will respond in a strange behavior: the constraints from "endDate" where used:
object(Symfony\Component\Validator\ConstraintViolationList)[154]
private 'violations' =>
array (size=1)
0 =>
object(Symfony\Component\Validator\ConstraintViolation)[158]
private 'message' => string 'This field is missing.' (length=22)
private 'messageTemplate' => string 'This field is missing.' (length=22)
private 'parameters' =>
array (size=1)
'{{ field }}' => string '"duration"' (length=10)
private 'plural' => null
private 'root' =>
array (size=4)
'token' => string 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855' (length=64)
'languageCode' => string 'DE' (length=2)
'startDate' => string '2016-01-01' (length=10)
'endDate' => string '2016-01-05' (length=10)
private 'propertyPath' => string '[duration]' (length=10)
private 'invalidValue' => null
private 'constraint' =>
object(Symfony\Component\Validator\Constraints\Date)[136]
public 'message' => string 'This value is not a valid date.' (length=31)
public 'payload' => null
public 'groups' =>
array (size=1)
0 => string 'Default' (length=7)
private 'code' => string '2fa2158c-2a7f-484b-98aa-975522539ff8' (length=36)
private 'cause' => null
I don't see the any reason for that....

Answer 1

try to add parameter allowMissingFields
$constraint = new Assert\Collection([
'allowMissingFields' => true,
'fields' => [asserts...]
]);