django笔记（七）分页组件

效果：

视图文件

from django.core.paginator import Paginator

def titles(request):
    titles = Titles.objects.order_by('create_date')  #获得模型数据
   #获得pagesize，默认为5
    page_size=int(request.GET.get('page_size')) if request.GET.get('page_size') else 5
    paginator = Paginator(titles, page_size)
    page = request.GET.get('page')  #获得第几页
    titles = paginator.get_page(page)  #获得第几页的数据
    print(type(titles))
    for  title in titles.paginator.page_range:
        print(title)  #页码范围
   print(titles.number)  #当前页码
    context = {'titles': titles}
    return render(request, 'myapp/titles.html', context)

模板文件

<nav aria-label="Page navigation">
    <ul class="pagination">
        
        {% if titles.has_previous %}
        <li class="page-item">    <a class="page-link" href="?page={{ titles.previous_page_number }}">previous</a></li>
        {% endif %}

{% for title in titles.paginator.page_range %}
        {% ifequal title titles.number %}
<li class="page-item">  <a class="page-link" style="height:50px" href="?page={{ title }}">{{ title}}</a></li>
{% else %} #请求的页码数等于当前页则高度为50px，突出显示当前页
      <li class="page-item">       <a class="page-link" href="?page={{ title }}">{{ title}}</a></li>{% endifequal %}
{% endfor %}

        {% if titles.has_next %}
           <li class="page-item">    <a class="page-link" href="?page={{ titles.next_page_number }}">Next</a></li>
        {% endif %}

    </ul>
</nav>

共{{titles.paginator.count}}条数据，显示第{{titles.start_index}}~{{titles.end_index}}条数据,每页显示{{titles.paginator.per_page}}


<form action="{% url 'myapp:titles'%}"  method="get">
        {% csrf_token %}
      <select name="page_size">
          <option>5</option>
          <option>10</option>
          <option>15</option>
      </select>
      <button type="submit" class="btn btn-primary">重置</button>
    </form>
{% endblock page_content %}