Display Zend_Form form errors in ViewScript

I'm trying to display all form errors before the form using a ViewScript. Here is the code that I'm currently trying to use within my ViewScript:

<div class="errors">
<?php echo $this->formErrors($this->element->getMessages()); ?>
</div>

This call gives me an error message:

Warning: htmlspecialchars() expects parameter 1 to be string, array given

I've seen this same code suggested other places but its no开发者_开发百科t working for me. If I print out $this->element->getMessages() I do see the error messages as the following:

Array ( [myField] => Array ( [isEmpty] => Value is required and can't be empty ) )

Any ideas?

The getMessages() returns an array of form element names as keys which each contain an array of errors for that element. So basically instead of handing the formErrors view helper:

Array ( [isEmpty] => Value is required and can't be empty )

You are handing it:

Array ( [myField] => Array ( [isEmpty] => Value is required and can't be empty ) )

You would want to do something like this instead:

$arrMessages = $this->myForm->getMessages();
foreach($arrMessages as $field => $arrErrors) {
    echo sprintf(
        '<ul><li>%s</li>%s</ul>',
        $this->myForm->getElement($field)->getLabel(),
        $this->formErrors($arrErrors)

    );
}

As Mark points out in his answer, the getMessages() returns an array of form element names as keys which each contain an array of errors for that element; and his solution is:

$arrMessages = $this->myForm->getMessages();
foreach($arrMessages as $field => $arrErrors) {
    echo sprintf(
        '<ul><li>%s</li>%s</ul>',
        $this->myForm->getElement($field)->getLabel(),
        $this->formErrors($arrErrors)

    );
}

This works, as long as getMessages() results in a two-dimensional array. However, if the form is based on relational data sets generated by Doctrine (or some other plugin), the error message associated with a field might also be an array and the above code will crash because it treats $arrErrors as a string when it turns out to be an array.

To capture the error messages if there's a second data set we could introduce a foreach statement nested inside the first foreach statement, but that won't work when getMessages() results in a two-dimensional array; nor does it work if the data sets are more than two-deep.

In a relational data scenario where we don't know how deep the error message comes from, a scalable solution is

$arrMessages = $this->myForm->getMessages();
print_r ($arrMessages);