Codeigniter：将数据从视图传递到控制器

Question

This is my view code:

<p align="center"; style="font-size:22px">Database books</p>
        <table>
      <tr>
        <th>Book ID</th>
        <th>Book Name</th>
        <th>Description</th>
        <th>Author</th>
        <th>Publisher</th>
        <th>Pages</th>
        <th>Publication Date</th>
        <th>Price</th>
        <th>Status</th>
        <th>Quantity</th>
        <th>Genres</th>
        <th>User Rating</th>
        <th>Reviews</th>
        <th>Edit</th>
      </tr>
      <?php foreach($books as $book) { ?>
      <tr>
        <td><?php echo $book->book_id ?></td>
        <td><?php echo $book->book_name ?></td>
        <td><?php echo $book->description ?></td>
        <td><?php echo $book->author ?></td>
        <td><?php echo $book->publisher ?></td>
        <td><?php echo $book->pages ?></td>
        <td><?php echo $book->publication_date ?></td>
        <td><?php echo $book->price ?></td>
        <td><?php echo $book->status ?></td>
        <td><?php echo $book->quantity ?></td>
        <td><?php echo $book->genres ?></td>
        <td><?php echo $book->user_rating ?></td>
        <td><?php echo $book->reviews ?></td>
        <td><a href="<?php echo base_url(); ?>admin/edit_data">Edit</a></td>
      </tr>
      <?php } ?>
    </table>

May i know how do i pass data from my view to my controller, as i would like to pass the information to my edit page. I am trying to search on passing variable using anchor tag, however i am getting information on using GET and POST only are there any other ways?

Answer 1

Change the href link to

href="<?php echo base_url(); ?>admin/edit_data/<?php echo $book->book_id ?>"

Then you can get the book id on your controller function edit data

function edit_data($bookid) {

    //you can use $bookid to fetch data from db

}

Answer 2

The above href link is right.

href="<?php echo base_url(); ?>admin/edit_data/<?php echo $book->book_id ?>"

just add $bookid = $this->uri->segment(3); inside function edit_data() {// do stuff here} to retrieve book id from the href link.

function edit_data() {
   $bookid = $this->uri->segment(3);
    //retrieving book id
}