Codeigniter 3 应用程序错误：添加 is_unique 验证条件会阻止提交编辑表单数据

Question

我正在使用 Codeigniter 3.1.8 和 Bootstrap 进行基础 blog application 4. 该应用程序具有用户（作者）帐户。

登录后，作者可以编辑his/her帐户信息，包括电子邮件地址：

将 is_unique 添加到电子邮件字段（为了防止帐户信息中的重复电子邮件地址编辑，而不仅仅是创建）导致此错误：

当我尝试使用已指定作者的电子邮件更新电子邮件时，包括我自己，验证错误消息电子邮件已被使用出现。

在控制器中我有这个更新方法：

public function update() {
    // Only logged in users can update user profiles
    if (!$this->session->userdata('is_logged_in')) {
        redirect('login');
    }

    $id = $this->input->post('id');

    $data = $this->Static_model->get_static_data();
    $data['pages'] = $this->Pages_model->get_pages();
    $data['categories'] = $this->Categories_model->get_categories();
    $data['author'] = $this->Usermodel->editAuthor($id);

    $this->form_validation->set_rules('first_name', 'First name', 'required');
    $this->form_validation->set_rules('last_name', 'Last name', 'required');
    $this->form_validation->set_rules('email', 'Email', 'required|trim|valid_email|is_unique[authors.email]');
    $this->form_validation->set_message('is_unique', 'The %s is already taken');
    $this->form_validation->set_error_delimiters('<p class="error-message">', '</p>');

    // Upload avatar
    $config['upload_path'] = './assets/img/authors';
    $config['allowed_types'] = 'jpg|jpeg|png';
    $config['max_size'] = '1024';

    $this->load->library('upload', $config);

    if (!$this->upload->do_upload('userfile')) {
        $uerrors = array('uerrors' => $this->upload->display_errors());

        // if NO file is uploaded,
        if (empty($_FILES['userfile']['name'])) {
            // force upload validation and
            $uerrors = [];
            // use the existing avatar (if any)
            $avatar = $this->input->post('avatar');
        }

        $data['uerrors'] = $uerrors;

    } else {
        $data = array('upload_data' => $this->upload->data());
        $avatar = $_FILES['userfile']['name'];
        $this->session->set_userdata('user_avatar', $avatar);
    }

    if(!$this->form_validation->run() || !empty($uerrors)) {

        $this->load->view('partials/header', $data);
        $this->load->view('dashboard/edit-author');
        $this->load->view('partials/footer');
    } else {
        $this->Usermodel->update_user($avatar, $id);
        $this->session->set_flashdata('user_updated', 'Your account details have been updated');
        redirect(base_url('/dashboard/manage-authors'));
    }
}

在带有编辑表单的视图中：

<div class="form-group <?php if(form_error('email')) echo 'has-error';?>">
    <input type="text" name="email" id="email" class="form-control" value="<?php echo set_value('email', $author->email); ?>" placeholder="Email">
    <?php if(form_error('email')) echo form_error('email'); ?> 
</div>

我的错误在哪里？

Answer 1

这就是 is_unique 的工作原理，它检查 table 是否有任何重复的条目，因为它无法知道 id 正在编辑什么。这是一个错误吗？也许吧。
但是您可以创建自己的验证函数并调用它。像这样 -

public function update() {

    $id = $this->input->post('id');
    // ...
    // ...
    // ...
    $this->form_validation->set_rules('email', 'Email', 'required|trim|valid_email|callback__checkemail['.$id.']'); // pass id
    // ...
    // ...
    // ...
}

function _checkemail($email, $id){

    // don't need to $this->input->post('email') as it is a validation for the same ↑↑(set_rules), if you need anything else then $this->input->post('input_field')
    if( !$id ){
        $this->db->where('email', $email);
        $num = $this->db->count_all_results('authors');
    }else{
        $this->db->where('email', $email);
        $this->db->where_not_in('id', $id); // not in current id in edit mode
        $num = $this->db->count_all_results('authors');
    }
    // You'd probably want to do DB queries↑↑ in model
    // You can also combine the queries into one as they seem repetitive

    if ($num > 0) {
        $this->form_validation->set_message('_checkemail','Email already exists!'); //set message to the callbacked function(ie _checkemail) not the input field here.
        return FALSE; 
    } else {
        return TRUE; 
    }
}

看看对你有没有帮助。

Codeigniter 3 应用程序错误：添加 is_unique 验证条件会阻止提交编辑表单数据

Codeigniter 3 application bug: adding is_unique validation criteria prevents edit form data from submitting

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