【django】新闻模块——新闻列表展示【29】

一、配置路由

from django.urls import path,re_path
from . import views

urlpatterns=[
    re_path('^$',views.IndexView.as_view(),name='index'),
    re_path('^list/(?P<channel_id>\d+)/(?P<page_num>\d+)/$',views.IndexView.as_view())
]

二、完善视图

from django.shortcuts import render
from django.views.generic.base import View
# Create your views here.
from .models import NewsChannel, Article
from django import http
from django.core.paginator import Paginator, EmptyPage


class IndexView(View):
    def get(self,request,channel_id=1,page_num=1):
        '''
        新闻列表展示功能
        :param request:
        :return:
        '''
        #获取频道对象
        try:
            newschannel=NewsChannel.objects.get(id=channel_id)
        except NewsChannel.DoseNotExist:
            return http.HttpResponseNotFound('未找到channel_id')
        else:

            #获取当前频道下的所有类别id
            category_id_list=[category.id for category in newschannel.newscategory_set.all() if category]
        #查询当前频道下的所有文章
        articles=Article.objects.filter(category_id__in=category_id_list).order_by('id')

        #创建分页器对象
        page_obj=Paginator(articles,3)
        #获取当前页数据
        try:
            page_articles=page_obj.page(page_num)
        except EmptyPage:
            return http.HttpResponseNotFound('未找到相应page_num')

        return render(request,'newsapp/index.html',{'articles':page_articles,'channel_id':channel_id})

三、编辑newsapp/index.html

新闻列表部分

<div class="site-main">
    <h3 class="custom_blog_title">
        新闻列表
    </h3>
    <div class="blog-list list-style">
        {% for article in articles %}
            <div class="blog-item">
            <div class="post-format">
                <a href="#">
                    <img src="{{ article.default_img.url }}" alt="img">
                </a>
            </div>
            <div class="post-info">
                <div class="category-blog">
                    <a href="#">{{ article.category.name }}</a>
                </div>
                <h3 class="post-title">
                    <a href="#">{{ article.title }} </a>
                </h3>

                <div class="author-view">
                    <div class="author">
                        <div class="avt">
                            <img src="/static/images/avt-blog1.png" alt="img">
                        </div>
                        <h3 class="name">
                            设计本本
                        </h3>
                    </div>
                    <div class="review">
                        <div class="view">
                            <span class="icon-view">
                                <i class="fa fa-eye" aria-hidden="true"></i>
                            </span>
                            <span class="count">
                                631
                            </span>
                        </div>
                        <div class="s-comments">
                            <span class="icon-cmt">
                                <i class="fa fa-commenting" aria-hidden="true"></i>
                            </span>
                            <span class="count">
                                82
                            </span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        {% endfor %}

分⻚部分

<div class="pagination clearfix style2">
        <div class="nav-link">
            {% if articles.has_previous() %}
                <a href="/list/{{ channel_id }}/{{ articles.number - 1 }}/" class="page-numbers"><i class="icon fa fa-angle-left" aria-hidden="true"></i></a>
            {% endif %}
            {% for num in range(1,articles.paginator.num_pages + 1) %}
                <a href="/list/{{ channel_id }}/{{ num }}/" class="page-numbers {% if num == articles.number %}current{% endif %}">{{ num }}</a>
            {% endfor %}
            {% if articles.has_next() %}
                <a href="/list/{{ channel_id }}/{{ articles.number + 1 }}/" class="page-numbers"><i class="icon fa fa-angle-right" aria-hidden="true"></i></a>
            {% endif %}
        </div>
    </div>