php - 输入的自定义错误消息

Question

我正在尝试为输入设置自定义消息：

$this->form_validation->set_message('username', 'Choose a business, Mang!');

并显示：

<?php echo form_error('username'); ?>

但是我什么都没有显示，怎么了？

这是我需要的吗？例子：

if($result)
{
    $this->form_validation->set_message('username', 'Choose a business, Mang!');
}

Answer 1

You need to set rules as such:

$this->form_validation->set_rules('form_field_username', 'username', 'required|callback_business_check');

function business_check($username) {
    if(strlen($this->input->post('form_field_business')) == 0) {
        $this->form_validation->set_message('business_check', 'Choose a business, Mang!');
        return false;
    }
    return true;
}

This is providing I have the right idea of what you are doing...