在 CodeIgniter 框架中使用 Jquery 添加到收藏夹功能

Question

I am currently working on a tour website, where the number of destinations is available for the user. A Login user can like any destination which will be added to his favorites destination section. I have done this task successfully. But after liked the destination the like button appears multiple times or equal to the number of likes have the user done. Maybe I am wrong in my logic here is my code. The first loop is fetching all the destination and the second loop fetching the favorites destination. Note:- Here I am showing only logic code not complete HTML or other PHP code

<?php foreach($listing_data as $list){ ?>
<?php foreach($favorites as $fav){ if($fav['link_id']==$list['id']){?>
      <li class="pull-right"> <a  class="Theme" id="liked"><i class="fas fa-heart"></i> </a> </li>
      <?php } else {?>
      <li class="pull-right"> <a href=""  class="Theme" id="liked"><i class="far fa-heart"></i> </a> </li>
      <?php } } }?>

Answer 1

Just add a helper variable
and take out the html in 2th foreach.
$like = false; in each Site
Then in each site you loop $favorites, then walk in $favorites for check if TheSite is liked;
after second foreach you should compare if $like is true for use class "fas" or false for use class "far"

 <?php foreach($listing_data as $list){ $like = false; foreach($favorites as $fav){ if($fav['link_id']==$list['id']){ $like = true; } } if($like){?> <li class="pull-right"> <a class="Theme" id="liked"><i class="fas fa-heart"></i></a> </li> <?php } else {?> <li class="pull-right"> <a href="" class="Theme" id="liked"><i class="far fa-heart"></i> </a> </li> <?php } }?>

Answer 2

This is just a refactoring of the code to make it look a bit cleaner. The links are not included as they are? and also use id's that will not be unique.

So the code could become something like...

<?php foreach ($listing_data as $list): ?>
    <?php

    foreach ($favorites as $fav) {
        $like = ($fav['link_id'] == $list['id']);
    }
    ?>

    <li class="pull-right">
        <?php if ($like): ?>
            <span>More Sensible Link 1</span>
        <?php else: ?>
            <span>More Sensible Link 2</span>
        <?php endif; ?>
    </li>

<?php endforeach; ?>