Question

我正在使用Codeigniter 3制作CRUD应用程序。

每当我编辑记录并且数据无效时，浏览器都会输出消息：Trying to get property of non-object。

，而不是仅显示验证错误消息。

控制器中的我的更新功能如下所示：

public function update($customer_id) {
    // data validation
    $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 address', 'required|valid_email');
    $this->form_validation->set_rules('phone', 'Phone number', 'required');
    $this->form_validation->set_rules('country', 'Country', 'required');
    $this->form_validation->set_error_delimiters('<p class="error">', '</p>');

    if ($this->form_validation->run()) {
        $data = [
        // insert into these database table fields
        'first_name' => $this->input->post('first_name'),
        'last_name' => $this->input->post('last_name'),
        'email' => $this->input->post('email'),
        'phone' => $this->input->post('phone'),
        'country' => $this->input->post('country'),
        'city' => $this->input->post('city'),
        'address' => $this->input->post('address')
        ];
        $this->load->model('Customer');
        if ($this->Customer->updateCustomer($customer_id, $data)) {
            $this->session->set_flashdata('update-response','Customer successfully updated');
        } else {
            $this->session->set_flashdata('update-response','Failed to update customer');
        }
        redirect('home');
    } else {
    $data = [       
        'first_name' => $this->input->post('first_name'),
            'last_name' => $this->input->post('last_name'),
            'email' => $this->input->post('email'),
            'phone' => $this->input->post('phone'),
            'country' => $this->input->post('country'),
            'city' => $this->input->post('city'),
            'address' => $this->input->post('address'),
        'id' => $customer_id
    ];
    $this->load->view('update', ['customer' => $data]);
 }
}

如果更新表单中的数据有效，则没有错误。表格如下：

<?php echo form_open("home/update/{$customer->id}"); ?>

            <div class="form-group <?php if(form_error('first_name')) echo 'has-error';?>">
                <?php echo form_input('first_name', set_value('first_name', $customer->first_name),[
                    'id' => 'first_name',
                    'class' => 'form-control'
                    ]);
                if(form_error('first_name')) echo '<span class="glyphicon glyphicon-remove"></span>';
                echo form_error('first_name'); ?>                                     
            </div>

            <div class="form-group <?php if(form_error('last_name')) echo 'has-error';?>">
                <?php echo form_input('last_name', set_value('last_name', $customer->last_name), [
                    'id' => 'last_name',
                    'class' => 'form-control'
                    ]);
                if(form_error('last_name')) echo '<span class="glyphicon glyphicon-remove"></span>';
                echo form_error('last_name'); ?> 
            </div>

            <div class="form-group <?php if(form_error('email')) echo 'has-error';?>">
                <?php echo form_input('email', set_value('email', $customer->email), [
                    'id' => 'email',
                    'class' => 'form-control'
                    ]);
                if(form_error('email')) echo '<span class="glyphicon glyphicon-remove"></span>';
                echo form_error('email'); ?> 
            </div>

            <div class="form-group <?php if(form_error('phone')) echo 'has-error';?>">
                <?php echo form_input('phone', set_value('phone', $customer->phone), [
                    'id' => 'phone',
                    'class' => 'form-control'
                    ]);
                if(form_error('phone')) echo '<span class="glyphicon glyphicon-remove"></span>';
                echo form_error('phone'); ?>
            </div>

            <div class="form-group <?php if(form_error('country')) echo 'has-error';?>">
                <?php echo form_input('country', set_value('country', $customer->country), [
                    'id' => 'country',
                    'class' => 'form-control'
                    ]);
                if(form_error('country')) echo '<span class="glyphicon glyphicon-remove"></span>';
                echo form_error('country'); ?>
            </div>

            <div class="form-group">
                <?php echo form_input('city', set_value('city', $customer->city), [
                    'id' => 'city',
                    'class' => 'form-control'
                    ]);
                ?>
            </div>

            <div class="form-group">
                <?php echo form_input('address', set_value('city', $customer->address), [
                    'id' => 'address',
                    'class' => 'form-control'
                    ]);
                ?>
            </div>

            <div class="form-group">
                <?php echo form_submit('submit', 'Save', 'class = "btn btn-success btn-block"'); ?>
            </div>

<?php echo form_close(); ?>

我相信$customer会变成一个关联数组，这就是错误消息的原因：Trying to get property of non-object。但导致这种转变的原因是什么？或问题的原因完全不同？

Answer 1

但是造成这种转变的原因是什么？

没什么，你传递一个数组，你得到一个你试图像对象一样访问的数组。

在您的示例中，$data是一个数组，但在您的视图中，您将像对象一样访问它。

如果您真的想像对象一样访问它，请将数组转换为object：

$this->load->view('update', ['customer' => (object)$data]);

PHP错误：数组对象转换为关联数组

1 个答案: