CakePHP 3 - How to use Trim() before validation NotEmpty?

问题

My form validate empty fields, but if the user use "space", the validation handle how one character.. How to use Trim() in Model-Table for it not happen?

回答1:

Assuming that you have a title column in Posts table and you want to trim title before validating.

put following code in src\Model\Table\PostsTable.php

public function beforeMarshal(Event $event, ArrayObject $data)
    {
        $data['title'] = trim($data['title']);
    }

and add following two lines at the top of src\Model\Table\PostsTable.php

use Cake\Event\Event;
use ArrayObject;

Thanks

回答2:

I like to trim data in general for all requests. This asserts that nonsense whitespace added does not make the validation unfunctional:

public function startup(Event $event) {
    // Data preparation
    if (!empty($this->Controller->request->data) && !Configure::read('DataPreparation.notrim')) {
        $this->Controller->request->data = $this->trimDeep($this->Controller->request->data);
    }
    if (!empty($this->Controller->request->query) && !Configure::read('DataPreparation.notrim')) {
        $this->Controller->request->query = $this->trimDeep($this->Controller->request->query);
    }
    if (!empty($this->Controller->request->params['pass']) && !Configure::read('DataPreparation.notrim')) {
        $this->Controller->request->params['pass'] = $this->trimDeep($this->Controller->request->params['pass']);
    }

So maybe use such a component hook to clean your data prior to using it anywhere in your controller or model layer.

Source 2.x: https://github.com/dereuromark/cakephp-tools/blob/2.x/Controller/Component/CommonComponent.php#L45-L57

Source 3.x: https://github.com/dereuromark/cakephp-tools/blob/master/src/Controller/Component/CommonComponent.php#L25-L34

回答3:

You could use beforeRules callback and use trim () before data is validated.

回答4:

You could use beforeRules callback and use trim () before data is validated.

Edit: A simple example:

public function beforeRules($event, $entity, $options, $operation){
    $entity->set ('yourFieldname', trim ($entity->get ('yourFieldname')));
    return parent:: beforeRules($event, $entity, $options, $operation);

Put this in your table class.

回答5:

you need to add beforeMarshal in every model if you want to trim each record.

here is the working code

// Include use statements at the top of your file.
use Cake\Event\Event;
use ArrayObject;

// In a table or behavior class
public function beforeMarshal(Event $event, ArrayObject $data, ArrayObject $options)
{
    foreach ($data as $key => $value) {
        if (is_string($value)) {
            $data[$key] = trim($value);
        }
    }
}

here is the official reference of cakephp https://book.cakephp.org/3.0/en/orm/saving-data.html#modifying-request-data-before-building-entities

来源：https://stackoverflow.com/questions/28531521/cakephp-3-how-to-use-trim-before-validation-notempty

标签

php

validation

cakephp

cakephp-3.0