我正在尝试使用 django 和 jquery(Waypoint) 实现无限滚动。
我有一个分页为 5 的 ListView，但是当航点加载第二个页面时，不再执行 AJAX 请求，因此我在 onAfterPageLoad 上添加了 AJAX 函数，这有助于将 AJAX 函数带回新加载的页面。
那很好，但是它给我的代码引入了一个错误，使最初加载的页面（第一页）不再能很好地执行 AJAX 功能。如果我刚刚加载了第三页，它会使第一页上的 AJAX 运行 3 次，并使第二页上的 AJAX 运行两次，依此类推，具体取决于已加载的页面数。
我不知道是否有任何很酷的方法可以实现这一点，因为我尝试只使用不带航点的 jquery，但仍然遇到与仅使用航点时遇到的错误相同的错误，从而导致错误。到目前为止，这有点棘手。
{% extends "base.html" %}
{% block content %}
{% load static %}
<div class="container" style="max-width:700px">
<div class="px-3 pt-md-5 pb-md-4 mx-auto text-center">
<h1 class="display-4">All Groups</h1>
<p class="lead">List of groups</p>
</div>
<div class="">
<div class="row infinite-container">
{% for group in groups %}
<div class="col-md-12 infinite-item">
<!-- <img class="img-fluid" src="https://picsum.photos/700"> -->
<a class="text-dark" href="{{ group.get_absolute_url }}">
<div class="card mb-4 box-shadow">
<div class="card-body">
<h2 style="font-size:18px;font-weight:bold;min-height:42px;">
{{group.name|truncatechars:50}}</h2>
<div class="d-flex justify-content-between align-items-center">
<small class="text-muted">{{group.owner}}</small>
<small class="text-muted">{{group.date_created}}</small>
</div>
<p><a class='follow-btn' data-href='{{ group.get_group_follow_api_url }}'
data-likes='{{ page.likes.count }}'
href='{{ group.get_group_follow_url }}'>{{ group.follows.count }}
{% if request.user.profile in group.follows.all %}
Unfollow
{% else %}
Follow
{% endif %}
</a></p>
</div>
</div>
</a>
</div>
{% endfor %}
</div>
<!-- Comment for loading spinner -->
{% comment %}
<div class="d-flex d-none position-fixed" style="top:35vh;left:46vw">
<button class="btn btn-primary loading">
<span class="spinner-border spinner-border-sm"></span>
Loading...
</button>
</div>
{% endcomment %}
<!-- End of comment for loading spinner -->
<div class="row">
<div class="col-12">
{% if page_obj.has_next %}
<a class="infinite-more-link" href="?page={{ page_obj.next_page_number }}"></a>
{% endif %}
</span>
</div>
</div>
</div>
</div>
<script src="{% static "js/jquery.waypoints.min.js" %}"></script>
<script src="/static/js/infinite.min.js"></script>
<script>
var infinite = new Waypoint.Infinite({
element: $('.infinite-container')[0],
offset: 'bottom-in-view',
onBeforePageLoad: function () {
$('.loading').show();
},
onAfterPageLoad: function () {
$('.loading').hide();
$(document).ready(function(){
function updateText(btn, newCount, verb){
btn.text(newCount + " " + verb)
}
$(".follow-btn").click(function(e){
e.preventDefault()
var this_ = $(this)
var badge = this_.find('.unlike-update')
var followUrl = this_.attr("data-href")
var followCount = parseInt(this_.attr("data-follows")) | 0
var addFollow = followCount + 1
var removeFollow = followCount - 1
if (followUrl){
$.ajax({
url: followUrl,
method: "GET",
data: {},
success: function(data){
console.log(data)
var newFollows;
if (data.followed){
// updateText(this_, addLike, "Unlike")
// updateText(this_, data.likescount, badge)
updateText(this_, data.followscount, "Unfollow")
} else {
// updateText(this_, removeLike, "Like")
updateText(this_, data.followscount, "Follow")
// remove one like
}
}, error: function(error){
console.log(error)
console.log("error")
}
})
}
})
})
}})
</script>
{% include 'group/snippets/group_follow.html' %}
{% endblock %}
{% extends "base.html" %}
{% block content %}
{% load static %}
<div class="container" style="max-width:700px">
<div class="px-3 pt-md-5 pb-md-4 mx-auto text-center">
<h1 class="display-4">All Groups</h1>
<p class="lead">List of groups</p>
</div>
<div class="">
<div class="row infinite-container">
{% for group in groups %}
<div class="col-md-12 infinite-item">
<!-- <img class="img-fluid" src="https://picsum.photos/700"> -->
<a class="text-dark" href="{{ group.get_absolute_url }}">
<div class="card mb-4 box-shadow">
<div class="card-body">
<h2 style="font-size:18px;font-weight:bold;min-height:42px;">
{{group.name|truncatechars:50}}</h2>
<div class="d-flex justify-content-between align-items-center">
<small class="text-muted">{{group.owner}}</small>
<small class="text-muted">{{group.date_created}}</small>
</div>
<p><a class='follow-btn' data-href='{{ group.get_group_follow_api_url }}'
data-likes='{{ page.likes.count }}'
href='{{ group.get_group_follow_url }}'>{{ group.follows.count }}
{% if request.user.profile in group.follows.all %}
Unfollow
{% else %}
Follow
{% endif %}
</a></p>
</div>
</div>
</a>
</div>
{% endfor %}
</div>
<!-- Comment for loading spinner -->
{% comment %}
<div class="d-flex d-none position-fixed" style="top:35vh;left:46vw">
<button class="btn btn-primary loading">
<span class="spinner-border spinner-border-sm"></span>
Loading...
</button>
</div>
{% endcomment %}
<!-- End of comment for loading spinner -->
<div class="row">
<div class="col-12">
{% if page_obj.has_next %}
<a class="infinite-more-link" href="?page={{ page_obj.next_page_number }}"></a>
{% endif %}
</span>
</div>
</div>
</div>
</div>
<script src="{% static "js/jquery.waypoints.min.js" %}"></script>
<script src="/static/js/infinite.min.js"></script>
<script>
var infinite = new Waypoint.Infinite({
element: $('.infinite-container')[0],
offset: 'bottom-in-view',
onBeforePageLoad: function () {
$('.loading').show();
},
onAfterPageLoad: function () {
$('.loading').hide();
$(document).ready(function(){
function updateText(btn, newCount, verb){
btn.text(newCount + " " + verb)
}
$(".follow-btn").click(function(e){
e.preventDefault()
var this_ = $(this)
var badge = this_.find('.unlike-update')
var followUrl = this_.attr("data-href")
var followCount = parseInt(this_.attr("data-follows")) | 0
var addFollow = followCount + 1
var removeFollow = followCount - 1
if (followUrl){
$.ajax({
url: followUrl,
method: "GET",
data: {},
success: function(data){
console.log(data)
var newFollows;
if (data.followed){
// updateText(this_, addLike, "Unlike")
// updateText(this_, data.likescount, badge)
updateText(this_, data.followscount, "Unfollow")
} else {
// updateText(this_, removeLike, "Like")
updateText(this_, data.followscount, "Follow")
// remove one like
}
}, error: function(error){
console.log(error)
console.log("error")
}
})
}
})
})
}})
</script>
{% include 'group/snippets/group_follow.html' %}
{% endblock %}