Django 分页 - 查询参数（url）

Question

我目前正在使用 Django 网络框架开发待办事项应用程序。我有两个单独的容器（列表），它们是即将到来的项目和已完成的待办事项。此外，我不确定如何添加此功能如果我在 即将发布的项目 中单击 page-3，然后单击 page-2 in completed Items 我将重定向到即将到来的项目中的第 1 页和已完成项目中的第 2 页。我不想这样。我想要即将到来的第 3 页和完成的第 2 页。有什么方法可以用 Django 或 JavaScript.

我还附上了我创建的应用程序的图像。

models.py

class Todo(models.Model):

    date_created = models.DateTimeField(auto_now_add=True)
    completed = models.BooleanField(default=False)
    title = models.CharField(max_length=200)

    user_id = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)

    def __str__(self):
        return self.title

views.py

def home(request):

    todo_form = TodoForm()
    current = timezone.now()

    todo_items_upcoming = Todo.objects.filter(user_id=request.user, completed=False).order_by('-date_created')

    todo_items_completed = Todo.objects.filter(user_id=request.user, completed=True)

    pagi1 = Paginator(todo_items_upcoming, 4)
    pagi2 = Paginator(todo_items_completed, 4)

    page_num = request.GET.get('upcoming', 1)
    page_num2 = request.GET.get('completed', 1)

    page_obj = pagi1.get_page(page_num)
    page_obj2 = pagi2.get_page(page_num2)

    if request.method == "POST":
        todo_form1 = TodoForm(request.POST)
        if todo_form1.is_valid():
            data = todo_form1.cleaned_data.get('title')

            obj = Todo.objects.create(date_created=current, title=data, user_id=request.user)

    context = {'todo_form':todo_form, 'page_obj':page_obj, 'page_obj2':page_obj2, 'pagi1':pagi1, 'pagi2':pagi2,
                 'page_num2':int(page_num2),'page_num':int(page_num)}
    return render(request, 'todo/main.html', context)

main.html

{% extends 'todo/index.html' %}
{% load crispy_forms_tags %}


{% block content %}


    <div class="center-column">

        <h2 class="heading">Hello {{ request.user.username }}, Here's your ToDo List</h2>
                
            <form action="" method="POST" id='form-create'>
                {% csrf_token %}        

                <div class="input-group-append">
                    {{ todo_form.title}}

                    <button type="submit" class="form-control btn btn-primary mb-3 mr-sm-2" id="addItem">Add Items</button>

                </div>

            </form>
        
        
        <!-- Upcoming To DO Items -->
        <h4 class="heading">Upcoming ToDo Items</h4>
        
        <ul class="pagination justify-content-center">

            {% for i in pagi1.page_range %}

                <li class="page-item {% if i == page_num %} active {% endif %}">
                        <a class="page-link" href="?upcoming={{ i }}">{{ i }}</a>
                </li>

            {% endfor %}
        </ul>

        <div class="row">
            <div class="col" id="upcomItem">
                <ul class="list-group" id="upcomingItems">

                    {% for i in page_obj %}

                        <li class="list-group-item list-group-item-primary mb-2" id="upcomingItem">{{ i.title }}

                            <div class="float-right">

                                <button type="submit" class="btn-sm btn-danger ml-2 mt-2 mr-2 mb-1"><a href="{% url 'delete_todo' i.id %}">Delete</a></button>
                                
                            </div>

                            <div class="float-right">

                                <button type="submit" class="btn-sm btn-success ml-2 mt-2 mr-2 mb-1" id="update_btn"><a href="{% url 'update_todo' i.id %}">Update</a></button>

                            </div>

                            <div class="float-right">
                        
                                <button type="submit" class="btn-sm btn-dark ml-2 mt-2 mr-2 mb-1" id="completed_btn"><a href="{% url 'completed_todo' i.id %}">Completed</a></button>

                            </div>              
                                        
                        </li>
                            
                    {% endfor %}                    
                    
                </ul>
                
            </div>
        </div>

    </div>


<!-- Completed To Do Items -->
    <div class="center-column">

        <h4 class="heading">Completed ToDo Items</h4>
        
        <ul class="pagination justify-content-center">

            {% for i in pagi2.page_range %}

                <li class="page-item {% if i == page_num2 %} active {% endif %}">
                        <a class="page-link" href="?completed={{ i }}">{{ i }}</a>
                </li>

            {% endfor %}
        </ul>

        <div class="row">
            <div class="col" id="upcomItem">
                <ul class="list-group" id="upcomingItems">

                    {% for i in page_obj2 %}

                        <li class="list-group-item list-group-item-primary mb-2" id="upcomingItem">{{ i.title }}

                            <div class="float-right">

                                <button type="submit" class="btn-sm btn-danger ml-2 mt-2 mr-2 mb-1"><a href="{% url 'delete_todo' i.id %}">Delete</a></button>
                                
                            </div>

                            <div class="float-right">

                                <button type="submit" class="btn-sm btn-success ml-2 mt-2 mr-2 mb-1" id="update_btn"><a href="{% url 'update_todo' i.id %}">Update</a></button>

                            </div>          
                                        
                        </li>
                            
                    {% endfor %}                    
                    
                </ul>
                
            </div>
        </div>

    </div>

{% endblock %}

forms.py

class TodoForm(forms.ModelForm):
    
    class Meta:
        model = Todo
        fields = ['title', 'completed']

Answer 1

在 HTML 模板中更新缺少 url 查询字符串的相应 url，这意味着在已完成的待办事项列表中添加 upcoming，并且 completed在即将到来的列表中。例如：

// upcoming

<li class="page-item {% if i == page_num %} active {% endif %}">
                    <a class="page-link" href="?upcoming={{ i }}&completed={{ page_num2 }}">{{ i }}</a>
</li>

// completed

<li class="page-item {% if i == page_num2 %} active {% endif %}">
                    <a class="page-link" href="?completed={{ i }}&upcoming={{ page_num }}">{{ i }}</a>
</li>

Answer 2

你必须使用脚本来调用分页。

当你点击分页时 link 将重定向到 ?upcomming=10 URL 就像 www.xyz.com?upcomming=10

点击完成后，新的 URL 将是 www.xyz.com?completed=11

您的旧 URL 将被覆盖。

在你的代码中，你写了 if commoning is not in GET then take default value 1. 所以它导致了这个问题

使用onclick事件来解决这个问题。并且在里面

var href = new URL(window.location.href)
href.searchParam.set('upcomming',value)
href.searchParam.set('completed',value)
window.location.href = href.toString()

所以你的新 URL 会像 www.xyz.com?completed=11&upcomming=25

Django 分页 - 查询参数（url）

Django Pagination - Query parameter(url)

django

django-templates

django-forms

django-views

django-pagination