Question

我正在使用Codeigniter并有两个名为event_start_time和event_end_time的变量。我需要检查开始时间是否大于结束时间。

我如何使用Codeigniter中的表单验证库验证这一点？

$this->form_validation->set_rules('event_start_time', 'Starttid', 'required|strip_tags|trim');
$this->form_validation->set_rules('event_end_time', 'Sluttid', 'required|strip_tags|trim');

Answer 1

嗨CI中没有这样的选项。

你必须简单地使用比较运算符，如下所示：

if($event_start_time > $event_end_time){ /.../ }

Answer 2

有几种方法可以解决这个问题，但这是我要尝试的第一件事（代码未经测试）。

假设这是CodeIgniter 3

1）在/application/config/validation/validate.php

创建以下配置文件

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

// CI not normally available in config files,
// but we need it to load and use the model
$CI =& get_instance();

// Load the external model for validation of dates.
// You will create a model at /application/models/validation/time_logic.php
$CI->load->model('validation/time_logic');

$config['validation_rules'] = [
    [
        'field' => 'event_start_time',
        'label' => 'Starttid',
        'rules' => 'trim|required|strip_tags'
    ],
    [
        'field' => 'event_end_time',
        'label' => 'Sluttid',
        'rules' => [
            'trim',
            'required',
            'strip_tags'
            [ 
                '_ensure_start_time_end_time_logic', 
                function( $str ) use ( $CI ) {
                    return $CI->time_logic->_ensure_start_time_end_time_logic( $str ); 
                }
            ]
        ]
    ]
];

2）在/application/models/validation/time_logic.php

创建验证模型

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Time_logic extends CI_Model {

    public function __construct()
    {
        parent::__construct();
    }

    public function _ensure_start_time_end_time_logic( $str )
    {
        // Making an assumption that your posted dates are a format that can be read by DateTime
        $startTime = new DateTime( $this->input->post('event_start_time') );
        $endTime = new DateTime( $str );

        // Start time must be before end time
        if( $startTime >= $endTime )
        {
            $this->form_validation->set_message(
                '_ensure_start_time_end_time_logic', 
                'Start time must occur before end time'
            );
            return FALSE;
        }

        return $str;
    }

}

3）在您的控制器，模型或您正在验证帖子的任何地方，加载并应用验证规则，而不是指定它们的执行方式。

$this->config->load('validation/validate');
$this->form_validation->set_rules( config_item('validation_rules') );

验证开始时间是否大于结束时间

2 个答案: