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脚本之家。