嗨，我有这组代码正在工作的控制器：
public function edit_book(){
$this->load->library('form_validation');
$this->form_validation->set_rules('bName', 'Book Name', 'required|trim|xss_clean|strip_tags|max_length[255]|is_unique[books.book_name]');
$this->form_validation->set_rules('desc', 'Description', 'required|trim|xss_clean|strip_tags|max_length[255]');
$this->form_validation->set_rules('author', 'Author', 'required|trim|xss_clean|strip_tags|callback__alpha_dash_space|max_length[255]');
$this->form_validation->set_rules('publisher', 'Publisher', 'required|trim|xss_clean|strip_tags|max_length[255]');
$this->form_validation->set_rules('pages', 'Pages', 'required|trim|xss_clean|strip_tags|numeric|max_length[5]|is_natural');
if($this->form_validation->run()){
$month = $this->input->post('months');
$day = $this->input->post('days');
$year = $this->input->post('years');
$pDate = date("d-m-Y",mktime(0,0,0,$month,$day,$year));
}
$this->form_validation->set_rules('price', 'Price', 'required|trim|xss_clean|strip_tags|max_length[9]|decimal');
$this->form_validation->set_rules('status', 'Status', 'required');
$this->form_validation->set_rules('quantity', 'Quantity', 'required|trim|xss_clean|strip_tags|max_length[3]|numeric|is_natural');
$this->form_validation->set_rules('genres', 'Genres', 'required|trim|xss_clean|strip_tags|max_length[255]|alpha_dash_space');
$this->form_validation->set_rules('reviews', 'Reviews', 'required|trim|xss_clean|strip_tags|max_length[255]');
if ($this->form_validation->run()){
$this->load->model('model_books');
if ($this->model_books->edit_book($pDate)){
$data = array(
'title' => 'Edited Page'
);
$data2 = array(
'operation' => 'edited',
'repeat' => '',
'page' => 'edit'
);
$this->load->view("header", $data);
$this->load->view("operation_done", $data2);
$this->load->view("footer");
} else {
echo "Error editing books";
}
} else {
$this->edit_error();
}
}
观点：
<?php
echo form_open('admin/edit_book');
echo validation_errors();
foreach($books as $book) {
$bID = $book->book_id;
$bName = $book->book_name ;
$desc = $book->description;
$author = $book->author;
$publisher = $book->publisher;
$pages = $book->pages;
$pDate = $book->publication_date;
$price = $book->price;
$status = $book->status;
$quantity = $book->quantity;
$genres = $book->genres;
$reviews = $book->reviews;
};
echo "<p style= font-size:20px;color:#00FF33;>Book ID:". $bID . "</p>";
$data = array(
'name' => 'bID',
'id' => 'bID',
'value' => $bID,
'style' => 'font-size:18px',
'size' => '35',
'type' => 'hidden'
);
echo form_input($data);
$data = array(
'name' => 'bName',
'id' => 'bName',
'value' => $bName,
'style' => 'font-size:18px',
'size' => '35',
'placeholder' => 'Book Name',
);
echo form_input($data);
echo "<br /><br />";
$data = array(
'name' => 'desc',
'id' => 'desc',
'value' => $desc,
'rows' => '4',
'cols' => '34',
'style' => 'font-size:18px',
'placeholder' => 'Description',
);
echo form_textarea($data);
echo "<br /><br />";
$data = array(
'name' => 'author',
'id' => 'author',
'value' => $author,
'style' => 'font-size:18px',
'size' => '35',
'placeholder' => 'Author',
);
echo form_input($data);
echo "<br /><br />";
$data = array(
'name' => 'publisher',
'id' => 'publisher',
'value' => $publisher,
'style' => 'font-size:18px',
'size' => '35',
'placeholder' => 'Publisher',
);
echo form_input($data);
echo "<br /><br />";
$data = array(
'name' => 'pages',
'id' => 'pages',
'value' => $pages,
'style' => 'font-size:18px',
'size' => '35',
'placeholder' => 'Pages',
);
echo form_input($data);
echo "<br /><br />";
$months = array('' => 'Month',
'1' => 'Jan',
'2' => 'Feb',
'3' => 'Mar',
'4' => 'Apr',
'5' => 'May',
'6' => 'Jun',
'7' => 'Jul',
'8' => 'Aug',
'9' => 'Sep',
'10' => 'Oct',
'11' => 'Nov',
'12' => 'Dec'
);
$days[''] = 'Day';
for($i=1;$i<=31;$i++){
$days[$i] = $i;
}
$start_year = date("Y",mktime(0,0,0,date("m"),date("d"),date("Y")-80));
$years[''] = 'Year';
for ($i=$start_year;$i<=date("Y");++$i) {
$years[$i] = $i;
}
$date = DateTime::createFromFormat("d-m-Y", $pDate);
echo form_label('Publication Date','pDate')."<br/>".
form_dropdown('days',$days, $date->format("d"), 'required="required"'). " " . form_dropdown('months',$months, $date->format("m"), 'required="required"'). " " . form_dropdown('years',$years, $date->format("Y"), 'required="required"');
echo "<br /><br />";
echo form_label('$:');
$data = array(
'name' => 'price',
'id' => 'price',
'value' => $price,
'style' => 'font-size:18px',
'size' => '34',
'placeholder' => 'Price',
);
echo form_input($data);
echo "<br /><br />";
echo "<p>Status: ";
$statusOptions = array(
'' => '',
'Available' => 'Available',
'Out-Of-Stock' => 'Out-Of-Stock',
'Requires Ordering' => 'Requires Ordering',
'Archived' => 'Archived'
);
echo form_dropdown('status', $statusOptions, $status, 'required="required"');
echo "</p>";
$data = array(
'name' => 'quantity',
'id' => 'quantity',
'value' => $quantity,
'style' => 'font-size:18px',
'size' => '35',
'placeholder' => 'Quantity',
);
echo form_input($data);
echo "<br /><br />";
$data = array(
'name' => 'genres',
'id' => 'genres',
'value' => $genres,
'style' => 'font-size:18px',
'size' => '35',
'placeholder' => 'Genres',
);
echo form_input($data);
echo "<br /><br />";
$data = array(
'name' => 'reviews',
'id' => 'reviews',
'value' => $reviews,
'rows' => '4',
'cols' => '34',
'style' => 'font-size:18px',
'placeholder' => 'Reviews',
);
echo form_textarea($data);
echo "<br /><br />";
echo "<p>";
echo form_submit('edit_book', 'Edit');
echo "</p>";
echo form_close();
?>
一切正常，但每当我想编辑书籍而不更改书名时，验证检查会说该书已经存在于数据库中，并且不允许我更新我已更改的记录，除非我改变书名，请帮助我！
答案 0 :(得分：0)
您确定tablename.fieldname是正确还是
尝试将is_unique[books.book_name]更改为is_unique[books.bName]
答案 1 :(得分：0)
请勿删除您的验证。
仅在名称与现有名称不同时才包含验证。否则Coideigniter不允许您创建重复的字段。您需要手动检查名称是否已更改。
答案 2 :(得分：0)
编辑时可以使用：
$this->form_validation->set_rules('user_name', 'User Name', 'required|trim|xss_clean|edit_unique[users.user_name.'.$id.']');
并且函数edit_unique（）可用here。