CRM分页 ——第17天

1、分页的前端展示代码：

<nav>
              <ul class="pagination">
                  {% if query_sets.has_previous %}
                        <li class=""><a href="?page={{ query_sets.previous_page_number }}">上页</a></li>
                  {% endif %}
{#                   <li class="active"><a>{{ query_sets.number }}</a></li>#}

                  {% for loop_counter in query_sets.paginator.page_range %}
                        {% render_page_ele  loop_counter query_sets filter_condtions%}
                  {% endfor %}

                  {% if query_sets.has_next %}
                        <li class=""><a href="?page={{ query_sets.next_page_number }}">下页</a></li>
                  {% endif %}


{#                <li class="disabled"><a href="#">&laquo;</a></li>#}
 {#               <li class="active"><a href="#">1 <span class="sr-only">(current)</span></a></li>#}
 {#               #}

              </ul>
       </nav>

2、在view.py文件中返回给前端的字段代码：

#django的分页器 Paginator
from django.core.paginator import Paginator
paginator = Paginator(book_list, 2)  #设置每一页显示几条  创建一个panginator对象

query_sets.paginator.page_range  这个相等于Paginator.page_range
query_sets = paginator.page(page=2) #展示页的数据对象

#query_sets.number表示当前页= paginator.page(page=2).number

 print(Paginator.count) #总数据量
    print(Paginator.num_pages) #总分页数
    print(Paginator.page_range) #显示的是页数的标记 就是按钮的数目，表示页数的范围
  　　print(page2.has_next())            #是否有下一页
    print(page2.next_page_number())    #下一页的页码
    print(page2.has_previous())        #是否有上一页
    print(page2.previous_page_number()) #上一页的页码

def display_table_objs(request,app_name,table_name):

    print("-->",app_name,table_name)
    #models_module = importlib.import_module('%s.models'%(app_name))
    #model_obj = getattr(models_module,table_name)
    admin_class = kind_admin.enabled_admins[app_name][table_name]
    #admin_class = king_admin.enabled_admins[crm][userprofile]

    #object_list = admin_class.model.objects.all()
    object_list,filter_condtions = table_filter(request,admin_class)
    paginator = Paginator(object_list, admin_class.list_per_page) # Show 25 contacts per page
    print("paginator------",paginator)
    page = request.GET.get('page')
    try:
        query_sets = paginator.page(page)
    except PageNotAnInteger:
        # If page is not an integer, deliver first page.
        query_sets = paginator.page(1) #这个是对分页的数据进行取值

except EmptyPage: # If page is out of range (e.g. 9999), deliver last page of results. query_sets = paginator.page(paginator.num_pages) print("query_sets------------",query_sets) return render(request,"kindadmin/table_objs.html",{"admin_class":admin_class, "query_sets":query_sets, "filter_condtions":filter_condtions})

3、在自定标签定义一个函数返回分页值，因为当去筛选的时候也会把请求的page当成是查询条件，所以当有page字段时使用continue不往下执行把page也当作筛选条件

@register.simple_tag
def render_page_ele(loop_counter,query_sets,filter_condtions):
    sel_ele =""
    for k,v in filter_condtions.items():
        sel_ele+="&%s=%s"%(k,v)

    if abs(query_sets.number - loop_counter) <= 1:
        ele_class = ""
        if query_sets.number == loop_counter:
            ele_class = "active"
        ele = '''<li class="%s"><a href="?page=%s%s">%s</a></li>''' %(ele_class,loop_counter,sel_ele,loop_counter)

        return mark_safe(ele)
    return ''