cakePHP: how set error validation to input field manually in controller

Question

I want set error validation to input field manually in controller example:

  if ($remainTime < 30) {
      ..... set error validation in here (error: lim         


        

Answer 1

2019 update for CakePHP3 in YourController.php

// creane new
$entity = $this->YouTable->newEntity();

// or get existing from database
// $entity = $this->YouTable->get($id);

// invalidate fields
$entity->setErrors('your_field', 'error message');
$this->set('$entity', $entity);

and in action.ctp

// create form based on your entity
echo $this->Form->create($entity);
// and include your control
echo $this->Form->control('your_field');

if your form based on table, and for modelless forms first you need to create src/Form/YourForm.php with schema definition and then call setErrors() on YourForm instance from controller.