一：封装保存
1.1：page.py
# 自定义分页# 带首页和尾页# 官方推荐,页码数为奇数class PageNation: def __init__(self,base_url,current_page_num,total_counts,request,per_page_counts=10,page_number=5,): ''' :param base_url: 分页展示信息的基础路径 :param current_page_num: 当前页页码 :param total_counts: 总的数据量 :param per_page_counts: 每页展示的数据量 :param page_number: 显示页码数 # 关键字参数写在最后面,如果有传进来的参数就用 传进来的，如果没有则用默认的 ''' self.base_url = base_url self.current_page_num = current_page_num self.total_counts = total_counts self.per_page_counts = per_page_counts self.page_number = page_number self.request = request try: self.current_page_num = int(self.current_page_num) except Exception: self.current_page_num = 1 if self.current_page_num < 1: self.current_page_num = 1 # 做一个异常处理, 如果是非字母或者负数 跳转到第一页 half_page_range = self.page_number // 2 # 计算总页数 self.page_number_count, a = divmod(self.total_counts, self.per_page_counts) if a: self.page_number_count += 1 if self.current_page_num > self.page_number_count: self.current_page_num = self.page_number_count if self.page_number_count <= self.page_number: self.page_start = 1 self.page_end = self.page_number_count else: if self.current_page_num <= half_page_range: #2 self.page_start = 1 self.page_end = page_number #5 elif self.current_page_num + half_page_range >= self.page_number_count: self.page_start = self.page_number_count - self.page_number + 1 self.page_end = self.page_number_count else: self.page_start = self.current_page_num - half_page_range self.page_end = self.current_page_num + half_page_range import copy from django.http.request import QueryDict self.params = copy.deepcopy(request.GET) # ?condition = qq & wd = 1 & page = 3 # params['page'] = current_page_num # query_str = params.urlencode() #数据切片依据,起始位置 @property def start_num(self): if self.current_page_num == 0: self.current_page_num = 1 start_num = (self.current_page_num - 1) * self.per_page_counts return start_num #数据切片依据,终止位置 @property def end_num(self): end_num = self.current_page_num * self.per_page_counts return end_num # 拼接HTMl标签 def page_html(self): tab_html = '' tab_html += '
1.2：views.py
# CBV 写法class CustomerView(View): def get(selef, request): all_customers = models.Customer.objects.all() # 获取数据总数量 current_page_num = request.GET.get('page', 1) # 当前页 per_page_counts = 9 # 每页显示9条 page_number = 9 # 总共显示9个页码 total_count = all_customers.count() # 得到页数总的数据量 #__init__(self,base_url,current_page_num,total_counts,request,per_page_counts=10,page_number=5,)# 关键字参数写在最后面,如果有传进来的参数就用 传进来的，如果没有则用默认的# 按照page里 参数顺序 进行传参 page_obj = page.PageNation(request.path, current_page_num, total_count, request, per_page_counts, page_number) # 需要传个 request，要不然会报错 all_customers = all_customers.order_by('-pk')[page_obj.start_num:page_obj.end_num] # 调用page里的start和end方法, page_obj.start_num:page_obj.end_num # -pk是数据进行倒序排列 ret_html = page_obj.page_html() # 调用page里的拼接标签 return render(request,'customers.html',{'all_customers':all_customers,'ret_html':ret_html}) # 返回给html页面，数据，和拼接的html
二：函数版本
#函数low版def pagenation(base_url,current_page_num,total_counts,per_page_counts=10,page_number=5): ''' total_counts 数据总数 per_page_counts 每页分多少条数据 page_number = 页码显示多少个 current_page_num 当前页 :return: ''' # all_objs_list = models.Customer.objects.all() # total_counts = all_objs_list.count() # per_page_counts = 10 # page_number = 5 try: current_page_num = int(current_page_num) except Exception: current_page_num = 1 half_page_range = page_number//2 #计算总页数 # 数据总数 每页分多少条数据 page_number_count,a = divmod(total_counts,per_page_counts) if current_page_num < 1: current_page_num = 1 if a: page_number_count += 1 if current_page_num > page_number_count: current_page_num = page_number_count start_num = (current_page_num - 1) * 10 end_num = current_page_num * 10 if page_number_count <= page_number: page_start = 1 page_end = page_number_count else: if current_page_num <= half_page_range: page_start = 1 page_end = page_number elif current_page_num + half_page_range >= page_number_count: page_start = page_number_count - page_number + 1 page_end = page_number_count else: page_start = current_page_num - half_page_range page_end = current_page_num + half_page_range #拼接HTMl标签 tab_html = '' tab_html += '
三：批量添加数据
一般测试分页都需要大量的数据 ，下面一次性的批量添加一些数据在项目里创建一个py文件，名字随便起，但是需要注意： os.environ.setdefault("DJANGO_SETTINGS_MODULE", "crm.settings") 该配置必须是当前项目 manage.py的配置,如果不是则会报错建议直接复制粘贴过来这个配置，避免额外的错误右键执行，这样就批量创建好了数据,最后查看表里有没有创建成功数据
import osif __name__ == "__main__": os.environ.setdefault("DJANGO_SETTINGS_MODULE", "crm.settings") import django django.setup() from app01 import models import random l1=[] for i in range(1,101): obj=models.Customer( qq=''.join([str(i) for i in random.choices(range(1,10),k=11) ]), name='xiaohei'+str(i), sex=random.choice(['male','female']), source=random.choice(['qq','referral','website']), course=random.choice(['linuxL','PythonFullStack']), ) l1.append(obj) models.Customer.objects.bulk_create(l1)