[英]How can I persist invalid edit form data in this Codeigniter 3 application?
我正在使用Codeigniter 3.1.8和Bootstrap 4開發一個基本的博客應用程序。
除其他外,還有一個“編輯帳戶信息”表格:
<?php echo form_open(base_url('dashboard/users/update')); ?>
<input type="hidden" name="id" id="uid" value="<?php echo $author->id; ?>">
<div class="form-group <?php if(form_error('first_name')) echo 'has-error';?>">
<input type="text" name="first_name" id="first_name" class="form-control" value="<?php echo $author->first_name;?>" placeholder="First name">
<?php if(form_error('first_name')) echo form_error('first_name'); ?>
</div>
<div class="form-group <?php if(form_error('last_name')) echo 'has-error';?>">
<input type="text" name="last_name" id="last_name" class="form-control" value="<?php echo $author->last_name;?>" placeholder="Last name">
<?php if(form_error('last_name')) echo form_error('last_name'); ?>
</div>
<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 $author->email;?>" placeholder="Email">
<?php if(form_error('email')) echo form_error('email'); ?>
</div>
<div class="form-group <?php if(form_error('bio')) echo 'has-error';?>">
<textarea name="bio" id="bio" cols="30" rows="5" class="form-control" placeholder="Add a short bio"><?php echo $author->bio; ?></textarea>
<?php if(form_error('bio')) echo form_error('bio'); ?>
</div>
<div class="form-group">
<input type="submit" value="Save" class="btn btn-block btn-md btn-success">
</div>
<?php echo form_close(); ?>
它對應的控制器邏輯是這樣的:
public function edit($id) {
// Only logged in users can edit user profiles
if (!$this->session->userdata('is_logged_in')) {
redirect('login');
}
$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->load->view('partials/header', $data);
$this->load->view('dashboard/edit-author');
$this->load->view('partials/footer');
}
public function update() {
// Only logged in users can edit user profiles
if (!$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');
$this->form_validation->set_error_delimiters('<p class="error-message">', '</p>');
if($this->form_validation->run() === FALSE)
{
$this->load->view('partials/header', $data);
$this->load->view('dashboard/edit-author');
$this->load->view('partials/footer');
} else
{
$this->Usermodel->update_user($id);
$this->session->set_flashdata('user_updated', 'Your account details have been updated');
redirect(base_url('/dashboard/manage-authors'));
}
}
我一直無法解決的問題與此表單的驗證有關:如果我將必填字段留空,並嘗試提交表單,表單已加載,並帶有正確的驗證錯誤消息,只有無效字段是用數據庫中的數據填充,因此,有效數據與錯誤消息一起顯示,如下表所示:
但是,只要字段的當前值沒有被無效的替換,我希望它(字段值)來自數據庫。
我該如何解決這個問題?
如果要將提交的數據保留在輸入值上,可以像這樣修改電子郵件代碼:
<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>
這會將提交的數據設置為電子郵件值(如果可用),或者如果沒有提交的電子郵件數據,則設置為來自數據庫的電子郵件數據。
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