FormType default input value in same form

问题

I have an Entity named Task and build a Symfony TaskType.php for the form. It is my aim to set the endDate datetime field by default to the input of the startDate datime field (which is required).

I tried this, but it doesn't work.

$builder->add('name');
    $builder->add('startDate', 'datetime');
    $builder->add('endDate', 'datetime', array(
        'empty_value' => array('year' => 'Year', 'month' => 'Month', 'day' => 'Day'),
        'required' => false,
        'data' => isset($options['data']) ? $options['data']->getEndDate() : $options['data']->getStartDate(),

    ));

Exception:

An exception occurred while executing 'INSERT INTO Task (name, startDate, endDate) VALUES (?, ?, ?)' with params {"1":"test","2":"2013-03-30 00:00:00","3":null}:

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'endDate' cannot be null 500 Internal Server Error - DBALException 1 linked Exception:

PDOException »

回答1:

Yes, of course it doesn't work. I recommend to read about how form works, if you have no time you can just read this "cheatsheet" - http://blog.stfalcon.com/wp-content/uploads/2012/01/how_symfony2_forms_works.pdf.

You can set the value after data was set. For example, try:

$form->bindRequest($request); 
// now you can get data and set 
$form->get('endDate')->setData($form->get('startDate')->getData());

Hope, it helps.

回答2:

You can also set the values in your entity class when it is instantiated:

class Task
{
    protected $startDate;
    protected $endDate;

    public function __construct($startDate)
    {
        $this->startDate = $startDate;
        $this->endDate = $startDate;
    }
}

来源：https://stackoverflow.com/questions/15599375/formtype-default-input-value-in-same-form

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php

forms

symfony

symfony-2.2