$Django Paginator分页器 批量创建数据

1批量插入数据:

User_list=[]
for i in range(100):
User_list.append(User(name='小明%s'%i,pwd='abcdefg%s'%i))
# 两个参数 （对象们，一次插几条)
User.objects.bulk_create(User_list)

2.分页器

 from django.core.paginator import Paginator
 # p=Paginator(users,10) # (【obj1,obj2...】object_list,一页显示数据条数)
 # p.num_pages    # 总页数
 # p.page_range          # 页数列表 range(1,11)
 
 第x页的页对象
 # s=p.page(1)   #取到第x页 的页对象
 # s.object_list      #queryser对象  放的第一页的数据对象
 # s.has_next()
 # s.has_previous()
 页数
 # request.GET.get('yeshu')    #当前页  <a href="?yesgy={{ foo }}">1</a>
 # s.next_page_number()     #下一页
 # s.previous_page_number()   #上一页
 -干啥的?数据量大的话,可以分页获取,查看
 基本写法:
  后端:
   -总数据拿出来
   -生成分页器Paginator对象(对象里有属性和方法)
   -生成当前页的对象,current_page=paginator.page(当前页码)
   -取出前台传过来的页码,current_page_num = int(request.GET.get('page'))
    -需要有异常捕获
    -捕获到,把当前页码设置成第一页

def index(request):
    book_list = models.Book.objects.all()
    paginator = Paginator(book_list, 3)
    # 如果页码数多,让它显示前5,后5,中间是当前在的页码
    try:
        current_page_num = int(request.GET.get('page'))
        current_page = paginator.page(current_page_num)
        print(current_page.object_list)
        # 总页码数,大于11的时候
        if paginator.num_pages >11:
            # 当前页码数-5大于1的时候,page_range应该是?
            if current_page_num-5<1:
                page_range=range(1,12)
            elif current_page_num+5>paginator.num_pages:
                #     当前页码数+5大于总页码数,总页码数往前推11个
                page_range=range(paginator.num_pages-10,paginator.num_pages+1)
            else:
                page_range = range(current_page_num - 5, current_page_num + 6)
        else:
            #小于11,有多少页,就显示多少页
            page_range=paginator.page_range
    except Exception as e:
        current_page_num = 1
        current_page = paginator.page(current_page_num)
    return render(request, 'index_next.html', locals())

前端:

<div class="container-fluid">
    <div class="row">
        <div class="col-md-6 col-md-offset-3">
            <table class="table table-striped">
                <thead>
                <tr>
                    <th>书名</th>
                    <th>价格</th>
                </tr>
                </thead>
                <tbody>
                {% for book in current_page %}
                    <tr>
                        <td>{{ book.name }}</td>
                        <td>{{ book.price }}</td>
                    </tr>
                {% endfor %}
                </tbody>
            </table>
 
            <nav aria-label="Page navigation">
                <ul class="pagination">
                    {% if current_page.has_previous %}
                        <li>
                            {#<a href="/index/?page={{ current_page_num|add:-1 }}" aria-label="Previous">#}
                            <a href="/index/?page={{ current_page.previous_page_number }}" aria-label="Previous">
                                <span aria-hidden="true">上一页</span>
                            </a>
                        </li>
                    {% else %}
                        <li class="disabled">
                            <a href="" aria-label="Previous">
                                <span aria-hidden="true">上一页</span>
                            </a>
                        </li>
                    {% endif %}
 
                    {% for foo in page_range %}
                        {% if current_page_num == foo %}
                            {# 当前页码等于循环到的页码数,变色#}
                            <li class="active"><a href="/index/?page={{ foo }}">{{ foo }}</a></li>
                        {% else %}
                            <li><a href="?page={{ foo }}">{{ foo }}</a></li>
                        {% endif %}
 
                    {% endfor %}
 
                    {% if current_page.has_next %}
                        <li>
                            {#                    <a href="/index/?page={{ current_page_num|add:1 }}" aria-label="Next">#}
                            <a href="/index/?page={{ current_page.next_page_number }}" aria-label="Next">
                                <span aria-hidden="true">下一页</span>
                            </a>
                        </li>
                    {% else %}
                        <li class="disabled">
                            <a href="" aria-label="Next">
                                <span aria-hidden="true">下一页</span>
                            </a>
                        </li>
                    {% endif %}
 
                </ul>
            </nav>
        </div>
    </div>
</div>