ZF3 Using Explode with InArray validator as child breaks validation messages format

[weierophinney]

I am using the following array notation in my form creation for a single select element:

'validators' => [
[
	'name' => 'Explode',
	'options' => [
		'validator' => [
			'name'=>'InArray', 
			'options'=>[
				'haystack'=>[1,2],
				'message'=> 'Invalid status'
			]
		]
	]
],
]

When I submit an invalid option, I get this from $form->getMessages():

  array (size=3)
  'status' => 
    array (size=2)
      'notInArray' => string 'The input was not found in the haystack' (length=39)
      0 => 
        array (size=1)
          'notInArray' => string 'Invalid status' (length=14)

Without the Explode layer in the validators,

[
     'name'=>'InArray', 
     'options'=>[
          'haystack'=>[1,2],
          'message'=>'Invalid status'
     ]
],

$form->getMessages() reports this when invalid:

array (size=3)
  'status' => 
    array (size=1)
      'notInArray' => string 'Invalid status' (length=14)

Since Explode does not acknowledge a message option and when I set disable_inarray_validator to true I still get:

  'status' => 
    array (size=2)
      'notInArray' => string 'The input was not found in the haystack' (length=39)
      0 => 
        array (size=1)
          'notInArray' => string 'Invalid status' (length=14)

What I am expecting to get is:

'status' => 
    array (size=1)
      'notInArray' => 
        array (size=1)
          0 => string 'Invalid status' (length=14)

From what I can tell, Explode is a utility to help process validators rather than being an actual validator. But in using it, it breaks validation messages so my standard code for processing form validation messages does not work.

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Originally posted by @dabroderick at zendframework/zend-validator#230

[gsteel]

Closed via #286 - error messages are now array<string, string>