分页功能的实现

1.在github上面搜索pure pagination

2.进入 django-pure-pagination

3.进入虚拟环境 安装 pip install django-pure-pagination

4.在settings里面：

INSTALLED_APPS 里面添加：

'pure_pagination',

然后在最后面添加：

'''分页'''
PAGINATION_SETTINGS = {
    'PAGE_RANGE_DISPLAYED': 10,
    'MARGIN_PAGES_DISPLAYED': 2,

    'SHOW_FIRST_PAGE_WHEN_INVALID': True,
}

5.在views.py文件里面添加：

from pure_pagination import Paginator, EmptyPage, PageNotAnInteger

class OrgView(View):
    def get(self, request):
        #  课程机构
        all_orgs = CourseOrg.objects.all()
        hot_orgs = all_orgs.order_by('-click_nums')[:3]
        #  城市
        all_citys = CityDict.objects.all()
        # 搜索功能
        search_keywords = request.GET.get('keywords', '')
        if search_keywords:
            all_orgs = all_orgs.filter(
                Q(name__icontains=search_keywords) | Q(desc__icontains=search_keywords))

        '''筛选城市'''
        city_id = request.GET.get('city', '')
        if city_id:
            all_orgs = all_orgs.filter(city_id=int(city_id))
        '''类别筛选'''
        category = request.GET.get('ct', '')
        if category:
            all_orgs = all_orgs.filter(category=category)
        sort = request.GET.get('sort', '')

        if sort == 'students':
            all_orgs = all_orgs.order_by('-students')
        elif sort == 'courses':
            all_orgs = all_orgs.order_by('-course_nums')
        org_nums = all_orgs.count()



        '''对内容经行分页'''
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        p = Paginator(all_orgs, 3, request=request)
        orgs = p.page(page)

        content = {
            'all_orgs': orgs,
            'all_citys': all_citys,
            'org_nums': org_nums,
            'city_id': city_id,
            'category': category,
            'hot_orgs': hot_orgs,
            'sort': sort,
        }
        return render(request, 'org-list.html', content)

6.在html文件里面填写：

{% if all_orgs.has_previous %}
    <li class="long"><a href="?{{ all_orgs.previous_page_number.querystring }}">上一页</a></li>
{% endif %}
{% for page in all_orgs.pages %}
    {% if page %}
        {% ifequal page all_orgs.number %}
            <li class="active"><a href="?{{ page.querystring }}">{{ page }}</a></li>
        {% else %}
            <li class=""><a href="?{{ page.querystring }}">{{ page }}</a></li>
        {% endifequal %}
    {% else %}
        <li class="none"><a href="">...</a></li>
    {% endif %}
{% endfor %}
{% if all_orgs.has_next %}
    <li class="long"><a href="?{{ all_orgs.next_page_number.querystring }}">下一页</a></li>
{% endif %}



7.筛选与排序功能d的html文件填写：

<div class="listoptions">
    <ul>
        <li>
            <h2>机构类别</h2>
            <div class="cont">
                <a href="?city={{ city_id }}"><span
                        class="{% ifequal category  '' %}active2{% endifequal %}">全部</span></a>

                <a href="?ct=pxjg&city={{ city_id }}"><span
                        class="{% ifequal category 'pxjg' %}active2{% endifequal %}">培训机构</span></a>

                <a href="?ct=gx&city={{ city_id }}"><span
                        class="{% ifequal category 'gx' %}active2{% endifequal %}">高校</span></a>

                <a href="?ct=gr&city={{ city_id }}"><span
                        class="{% ifequal category 'gr' %}active2{% endifequal %}">个人</span></a>

            </div>
        </li>
        <li>
            <h2>所在地区</h2>
            <div class="more">更多</div>
            <div class="cont">
                <a href="?ct={{ category }}"><span
                        class="{% ifequal city_id  '' %}active2{% endifequal %}">全部</span></a>
                {% for city in all_citys %}
                    <a href="?city={{ city.id }}&ct={{ category }}"><span
                            class="{% ifequal city_id city.id|stringformat:'i' %}active2{% endifequal %}">{{ city.name }}</span></a>

                {% endfor %}

            </div>
        </li>
    </ul>
</div>