Codeigniter将数据从数据库显示到文本框中

I created an accounts page wherein I can view all accounts from the database. Each of them has an action button called View More. If I press View More, additional details from the database will be displayed in textboxes. I want to get the ID for each of the row and pass it to the controller in order for it to be viewed. However, I can't seem to make them show in the boxes.

Expected: Image

Current: Image

Controller:

function viewmore()
{
    $userid = $this->input->get('userid', TRUE);
    $data['view'] = $this->model_accounts->viewmore_user($userid);
    $data['main_content'] = 'view_adminviewmore';
    $this->load->view('includes/admin_viewmore_template', $data);
}

Model:

public function viewmore_user($userid)
{
     $query= $this->db->select('*')->from('accounts')->where('userid', $userid)->get();
     return $query->result();
}

View for the Action Button:

          <?php foreach($users as $row): ?>
          <tr>
              <td><?php echo $row->firstname; ?></td>
              <td><?php echo $row->lastname; ?></td>
              <td><?php echo $row->username; ?></td>
              <td><?php echo $row->address; ?></td>
              <td class="action-button mobile-important">
                <a href="<?php echo base_url() ."admin_accounts/viewmore/?id=". $row->userid ?>"> <button type="button" class="btn btn-custom-3">View More</button></a>
              </td>

          <?php endforeach; ?>
          </tr>

View for displaying the data:

<?php foreach($view as $row): ?>
     <br>
     <p> First Name </p>
     <input class="form-control" id="sel1" type="text" placeholder="" value="<?php echo $row->firstname; ?>">
     <br>
     <p> Last Name </p>
     <input class="form-control" id="sel1" type="text" placeholder="" value="<?php echo $row->lastname; ?>">
     <br>
     <p> Username </p>
     <input class="form-control" id="sel1" type="text" placeholder="" value="<?php echo $row->username; ?>">
     <br>
     <p> Address </p>
     <input class="form-control" id="sel1" type="text" placeholder="" value="<?php echo $row->address; ?>">
     <br>
     <p> E-mail Address </p>
     <input class="form-control" id="sel1" type="email" placeholder="" value="<?php echo $row->email; ?>">
     <br>
     <p> Contact Number </p>
     <input class="form-control" id="sel1" type="text" placeholder="" value="<?php echo $row->contactnum; ?>">
     <br>
<?php endforeach; ?>

If you are using CodeIgniter, why not use the Form Helper?

You can use code like this:

<?php echo form_input('sel1', $row->firstname); ?>

instead of:

<input class="form-control" id="sel1" type="text" placeholder="" value="<?php echo $row->firstname; ?>">

Read some more about it here: https://www.codeigniter.com/user_guide/helpers/form_helper.html

your action button must be like this:

you can use <?="hello word!!!" ?> instead of <?php echo "hello word!!!" ?>

and base_url() return the root of your codeigniter folder that set in application->config->config.php

<a href="<?=base_url()." YOUR_CONTROLLER_NAME/viewmore/".USER_ID ?>View More</a>

link above return <a href="localhost/YOUR_CONTROLLER_NAME/viewmore?id=USER_ID>View More</a>

and your function viewmore() must be change to function viewmore($id=0),this $id give USER_ID from your url

and you better to know url in codeigniter contain this: Controller/Function/variable that you want pass to your function