Django自定义分页与bootstrap分页结合

django中有自带的分页模块Paginator,想Paginator提供对象的列表，就可以提供每一页上对象的方法。

这里的话不讲解Paginator,而是自定义一个分页类来完成需求：

class Pagination(object): 
 """用于Model字段值的选择""" 
 
 def __init__(self): 
  pass 
 
 @classmethod 
 def create_pagination(self, from_name='', model_name='', 
       cur_page=1, start_page_omit_symbol = '...', 
       end_page_omit_symbol = '...', one_page_data_size=10, 
       show_page_item_len=9): 
  """通过给的model和分页参数对相关model进行分页 
  Args: 
   from_name: 导入模块的 from后面的参数 
    from {from_name} import model_name 
   mode_name: 需要导入的模块名 
    from from_name import {model_name} 
   cur_page: 当前显示的是第几页 
   start_page_omit_symbol: 超出的页数使用怎么样的省略号(前) 
    ... 2 3 4 
   end_page_omit_symbol: 超出的页数使用怎么样的省略号(后) 
    1 2 3 4 ... 
   one_page_data_size: 每一页显示几行 
   show_page_item_len: 显示几个能点击的页数 
  Return: 
   pagination: dict 
     pagination = { 
      'objs': objs, # 需要显示model数据 
      'all_obj_counts': all_obj_counts, # 一共多少行数据 
      'start_pos': start_pos, # 数据分页开始的数据 
      'end_pos': end_pos, # 数据分页结束的数据 
      'all_page': all_page, # 一共有多少页 
      'cur_page': cur_page, # 当前的页码 
      'pre_page': pre_page, # 上一页的页码 
      'next_page': next_page, # 下一页的页码 
      'page_items': page_items, 能点击的页数 
      'start_page_omit_symbol': start_page_omit_symbol, # 开始的省略号 
      'end_page_omit_symbol': end_page_omit_symbol, # 结束的省略号 
     } 
  Raise: None 
  """ 
  # 如果没有输入导入模块需要的相关信息直接退出 
  if not from_name or not model_name: 
   return None 
 
  import_str = 'from {from_name} import {model_name}'.format( 
           from_name = from_name, 
           model_name = model_name) 
  # 导入模块 
  exec import_str 
 
  start_pos = (cur_page - 1) * one_page_data_size 
  end_pos = start_pos + one_page_data_size 
 
  # 查找需要的model数据 
  find_objs_str = ('{model_name}.objects.all()' 
       '[{start_pos}:{end_pos}]'.format( 
            model_name = model_name, 
            start_pos = start_pos, 
            end_pos = end_pos)) 
  objs = eval(find_objs_str) 
  
  # 计算总共的页数 
  find_objs_count_str = '{model_name}.objects.count()'.format( 
            model_name = model_name) 
  all_obj_counts = eval(find_objs_count_str) 
  all_page = all_obj_counts / one_page_data_size 
  remain_obj = all_obj_counts % one_page_data_size 
  if remain_obj > 0: 
   all_page += 1 
 
  # 限制当前页不能小于1和并且大于总页数 
  cur_page = 1 if cur_page < 1 else cur_page 
  cur_page = all_page if cur_page > all_page else cur_page 
 
  # 获得显示页数的最小页 
  start_page = cur_page - show_page_item_len / 2 
  if start_page > all_page - show_page_item_len: 
   start_page = all_page - show_page_item_len + 1 
  start_page = 1 if start_page < 1 else start_page 
 
  # 获得显示页数的最大页 
  end_page = cur_page + show_page_item_len / 2 
  end_page = all_page if end_page > all_page else end_page 
  if end_page < show_page_item_len and all_page > show_page_item_len: 
   end_page = show_page_item_len 
 
  # 获得上一页 
  pre_page = cur_page - 1 
  pre_page = 1 if pre_page < 1 else pre_page 
 
  # 获得下一页 
  next_page = cur_page + 1 
  next_page = all_page if next_page > all_page else next_page 
 
  # 处理省略符，是否显示 
  if start_page <= 1: 
   start_page_omit_symbol = '' 
   
  if end_page >= all_page: 
   end_page_omit_symbol = '' 
 
  # 创建能点击的展示页码 
  page_items = range(start_page, end_page + 1) 
 
  pagination = { 
   'objs': objs, 
   'all_obj_counts': all_obj_counts, 
   'start_pos': start_pos, 
   'end_pos': end_pos, 
   'all_page': all_page, 
   'cur_page': cur_page, 
   'pre_page': pre_page, 
   'next_page': next_page, 
   'page_items': page_items, 
   'start_page_omit_symbol': start_page_omit_symbol, 
   'end_page_omit_symbol': end_page_omit_symbol, 
  } 
 
  return pagination 

利用bootstrap的css,生成好看的html如下：

<nav aria-label="Page navigation"> 
 <ul class="pagination"> 
 {% if pagination.cur_page != 1 %} 
 <li><a href="?cur_page=1" rel="external nofollow" ><<</a></li> 
 <li> 
  <a href="?cur_page={{ pagination.pre_page }}" rel="external nofollow" aria-label="Previous"> 
  <span aria-hidden="true">«</span> 
  </a> 
 </li> 
 {% endif %} 
 {% for page_item in pagination.page_items %} 
 {% if page_item == pagination.cur_page %} 
  <li><a href="?cur_page={{ page_item }}" rel="external nofollow" rel="external nofollow" >{{ page_item }}</a></li> 
 {% else %} 
  <li><a href="?cur_page={{ page_item }}" rel="external nofollow" rel="external nofollow" >{{ page_item }}</a></li> 
 {% endif %} 
 {% endfor%} 
 {% if pagination.cur_page != pagination.all_page %} 
 <li> 
  <a href="?cur_page={{ pagination.next_page }}" rel="external nofollow" aria-label="Next"> 
  <span aria-hidden="true">»</span> 
  </a> 
 </li> 
 <li><a href="?cur_page={{ pagination.all_page }}" rel="external nofollow" >>></a></li> 
 {% endif %} 
 </ul> 
</nav> 

view函数如下：

def blogpage(request): 
  #ojt = BlogPost.object.all() 
  #p = Paginator(ojt,2) 
  #page_count = p.count 
  #page_data = p.page(page) 
  #template = 'blogpage.html' 
  #info = {'page_data':page_data,'page_count':page_count} 
  #return render(request,template,{'page_data':page_data,'page_count':page_count}) 
  try: 
    cur_page = int(request.GET.get('cur_page', '1')) 
  except ValueError: 
    cur_page = 1 
 
  pagination = Pagination.create_pagination( 
       from_name='blog.models', 
       model_name='BlogPost', 
       cur_page=cur_page, 
       start_page_omit_symbol = '...', 
       end_page_omit_symbol = '...', 
       one_page_data_size=1, 
       show_page_item_len=5) 
  return render(request, 'blogpage.html',{'pagination':pagination}) 

效果图如下：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持呐喊教程。

声明：本文内容来源于网络，版权归原作者所有，内容由互联网用户自发贡献自行上传，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任。如果您发现有涉嫌版权的内容，欢迎发送邮件至：notice#nhooo.com（发邮件时，请将#更换为@）进行举报，并提供相关证据，一经查实，本站将立刻删除涉嫌侵权内容。