1

它可以工作，但是当按下类似按钮时，它会计数 2099 而不是 1，刷新后它会变成 1..当与发生相同的问题不同时......刷新后它会正确计数....在刷新之前它会计数 2099 或 3011 随机数

我尝试了stackoverflow的一些解决方案，但并没有给我带来更好的结果..

阿贾克斯：

{% block domready %}
  $('a.like').click(function(e){
    e.preventDefault();
    $.post('{% url "images:like" %}',
      {
        id: $(this).data('id'),
        action: $(this).data('action')
      },
      function(data){
        if (data['status'] == 'ok')
        {
          var previous_action = $('a.like').data('action');

          // toggle data-action
          $('a.like').data('action', previous_action == 'like' ?
          'unlike' : 'like');
          // toggle link text
          $('a.like').text(previous_action == 'like' ? 'Unlike' :
          'Like');

          // update total likes
          var previous_likes = parseInt($('span.count .total').text());
          $('span.count .total').text(previous_action == 'like' ?
          previous_likes + 1 : previous_likes - 1);
        }
      }
    );
  });
{% endblock %}

HTML：

 {% with total_likes=image.users_like.count users_like=image.users_like.all %}
    <div class="image-info">
      <div>
        <span class="count">
          <span class="total">{{ total_likes }}</span>
          like{{ total_likes|pluralize }}
        </span>
        <span class="count">
          {{ total_views }} view{{ total_views|pluralize }}
        </span>
        <a href="#" data-id="{{ image.id }}" data-action="{% if request.user in users_like %}un{% endif %}like" class="like button">
          {% if request.user not in users_like %}
            Like
          {% else %}
            Unlike
          {% endif %}
        </a>
      </div>
      {{ image.description|linebreaks }}
    </div>
    <div class="image-likes">
      {% for user in users_like %}
        <div>
          <img src="{{ user.profile.photo.url }}">
          <p>{{ user.first_name }}</p>
        </div>
      {% empty %}
        Nobody likes this image yet.
      {% endfor %}
    </div>
  {% endwith %}
{% endblock %}

查询：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/js-cookie@2.2.1/src/js.cookie.min.js"></script>
    <script>
      var csrftoken = Cookies.get('csrftoken');
      function csrfSafeMethod(method) {
        // these HTTP methods do not require CSRF protection
        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
      }
      $.ajaxSetup({
        beforeSend: function(xhr, settings) {
          if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
            xhr.setRequestHeader("X-CSRFToken", csrftoken);
          }
        }
      });
  
      $(document).ready(function(){
        {% block domready %}
        {% endblock %}
      });
    </script>
4

1 回答 1

0

在您当前的 jquery 代码中，您的目标是所有类，即：$('span.count .total')这将获得所有类值，这就是您看到随机数的原因。相反，您可以使用selector.closest(".image-info").find(..仅针对a已单击标签的计数跨度进行$('a.like')使用$(this)。

演示代码：

$('a.like').click(function(e) {
  var selector = $(this) //use this
  e.preventDefault();
  /*$.post('{% url "images:like" %}', {
      id: $(this).data('id'),
      action: $(this).data('action')
    },
    function(data) {
      if (data['status'] == 'ok') {*/
  var previous_action = selector.data('action');
  selector.text(previous_action == 'like' ? 'Unlike' :
    'Like');
  //update action of only a tag which is been clicked
  selector.data('action', previous_action == 'like' ?
    'unlike' : 'like');

  //get span total
  var previous_likes = parseInt(selector.closest(".image-info").find('span.count .total').text());
  selector.closest(".image-info").find('span.count .total').text(previous_action == 'like' ?
    previous_likes + 1 : previous_likes - 1);
  /* }
    }
  );*/
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="image-info">
  <div>
    <span class="count">
          <span class="total">55</span> likes
    </span>
    <span class="count">
         87 view
        </span>
    <a href="#" data-id="1" data-action="like" class="like button">
            Like
        </a>
  </div>
  Somethings ..
</div>
<div class="image-info">
  <div>
    <span class="count">
          <span class="total">5</span> likes
    </span>
    <span class="count">
         82 view
        </span>
    <a href="#" data-id="2" data-action="unlike" class="like button">
            Unlike
        </a>
  </div>
  Somethings ..
</div>

于 2021-03-26T13:08:48.477 回答