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  1. from django.shortcuts import render,HttpResponse
  2.  
  3. # Create your views here.
  4. from app01.models import *
  5. from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
  6.  
  7. def index(request):
  8.  
  9.     '''
  10.     批量导入数据:
  11.  
  12.     Booklist=[]
  13.     for i in range(100):
  14.         Booklist.append(Book(title="book"+str(i),price=30+i*i))
  15.     Book.objects.bulk_create(Booklist)
  16.     '''
  17.  
  18.     '''
  19. 分页器的使用:
  20.  
  21.     book_list=Book.objects.all()
  22.  
  23.     paginator = Paginator(book_list, 10)
  24.  
  25.     print("count:",paginator.count)           #数据总数
  26.     print("num_pages",paginator.num_pages)    #总页数
  27.     print("page_range",paginator.page_range)  #页码的列表
  28.  
  29.  
  30.  
  31.     page1=paginator.page(1) #第1页的page对象
  32.     for i in page1:         #遍历第1页的所有数据对象
  33.         print(i)
  34.  
  35.     print(page1.object_list) #第1页的所有数据
  36.  
  37.  
  38.     page2=paginator.page(2)
  39.  
  40.     print(page2.has_next())            #是否有下一页
  41.     print(page2.next_page_number())    #下一页的页码
  42.     print(page2.has_previous())        #是否有上一页
  43.     print(page2.previous_page_number()) #上一页的页码
  44.  
  45.  
  46.  
  47.     # 抛错
  48.     #page=paginator.page(12)   # error:EmptyPage
  49.  
  50.     #page=paginator.page("z")   # error:PageNotAnInteger
  51.  
  52.     '''
  53.  
  54.  
  55.     book_list=Book.objects.all()
  56.  
  57.     paginator = Paginator(book_list, 10)
  58.     page = request.GET.get('page',1)
  59.     currentPage=int(page)
  60.  
  61.  
  62.     try:
  63.         print(page)
  64.         book_list = paginator.page(page)
  65.     except PageNotAnInteger:
  66.         book_list = paginator.page(1)
  67.     except EmptyPage:
  68.         book_list = paginator.page(paginator.num_pages)
  69.  
  70.  
  71.     return render(request,"index.html",{"book_list":book_list,"paginator":paginator,"currentPage":currentPage})
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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>Title</title>
  6.     <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" 
        integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
  7. </head>
  8. <body>
  9.  
  10. <div class="container">
  11.  
  12.     <h4>分页器</h4>
  13.     <ul>
  14.  
  15.         {% for book in book_list %}
  16.              <li>{{ book.title }} -----{{ book.price }}</li>
  17.         {% endfor %}
  18.  
  19.      </ul>
  20.  
  21.  
  22.     <ul class="pagination" id="pager">
  23.  
  24.                  {% if book_list.has_previous %}
  25.                     <li class="previous"><a href="/index/?page={{ book_list.previous_page_number }}">上一页</a></li>
  26.                  {% else %}
  27.                     <li class="previous disabled"><a href="#">上一页</a></li>
  28.                  {% endif %}
  29.  
  30.  
  31.                  {% for num in paginator.page_range %}
  32.  
  33.                      {% if num == currentPage %}
  34.                        <li class="item active"><a href="/index/?page={{ num }}">{{ num }}</a></li>
  35.                      {% else %}
  36.                        <li class="item"><a href="/index/?page={{ num }}">{{ num }}</a></li>
  37.  
  38.                      {% endif %}
  39.                  {% endfor %}
  40.  
  41.  
  42.  
  43.                  {% if book_list.has_next %}
  44.                     <li class="next"><a href="/index/?page={{ book_list.next_page_number }}">下一页</a></li>
  45.                  {% else %}
  46.                     <li class="next disabled"><a href="#">下一页</a></li>
  47.                  {% endif %}
  48.  
  49.             </ul>
  50. </div>
  51.  
  52.  
  53.  
  54. </body>
  55. </html>
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  1. def index(request):
  2.  
  3.  
  4.     book_list=Book.objects.all()
  5.  
  6.     paginator = Paginator(book_list, 15)
  7.     page = request.GET.get('page',1)
  8.     currentPage=int(page)
  9.  
  10.     #  如果页数十分多时，换另外一种显示方式
  11.     if paginator.num_pages>11:
  12.  
  13.         if currentPage-5<1:
  14.             pageRange=range(1,11)
  15.         elif currentPage+5>paginator.num_pages:
  16.             pageRange=range(currentPage-5,paginator.num_pages+1)
  17.  
  18.         else:
  19.             pageRange=range(currentPage-5,currentPage+6)
  20.  
  21.     else:
  22.         pageRange=paginator.page_range
  23.  
  24.  
  25.     try:
  26.         print(page)
  27.         book_list = paginator.page(page)
  28.     except PageNotAnInteger:
  29.         book_list = paginator.page(1)
  30.     except EmptyPage:
  31.         book_list = paginator.page(paginator.num_pages)
  32.  
  33.  
  34.     return render(request,"index.html",locals())
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  1. from django.shortcuts import render,HttpResponse
  2.  
  3. # Create your views here.
  4. from app01.models import *
  5. from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
  6.  
  7. def index(request):
  8.  
  9.     '''
  10.     批量导入数据:
  11.  
  12.     Booklist=[]
  13.     for i in range(100):
  14.         Booklist.append(Book(title="book"+str(i),price=30+i*i))
  15.     Book.objects.bulk_create(Booklist)
  16.     '''
  17.  
  18.     '''
  19. 分页器的使用:
  20.  
  21.     book_list=Book.objects.all()
  22.  
  23.     paginator = Paginator(book_list, 10)
  24.  
  25.     print("count:",paginator.count)           #数据总数
  26.     print("num_pages",paginator.num_pages)    #总页数
  27.     print("page_range",paginator.page_range)  #页码的列表
  28.  
  29.  
  30.  
  31.     page1=paginator.page(1) #第1页的page对象
  32.     for i in page1:         #遍历第1页的所有数据对象
  33.         print(i)
  34.  
  35.     print(page1.object_list) #第1页的所有数据
  36.  
  37.  
  38.     page2=paginator.page(2)
  39.  
  40.     print(page2.has_next())            #是否有下一页
  41.     print(page2.next_page_number())    #下一页的页码
  42.     print(page2.has_previous())        #是否有上一页
  43.     print(page2.previous_page_number()) #上一页的页码
  44.  
  45.  
  46.  
  47.     # 抛错
  48.     #page=paginator.page(12)   # error:EmptyPage
  49.  
  50.     #page=paginator.page("z")   # error:PageNotAnInteger
  51.  
  52.     '''
  53.  
  54.  
  55.     book_list=Book.objects.all()
  56.  
  57.     paginator = Paginator(book_list, 10)
  58.     page = request.GET.get('page',1)
  59.     currentPage=int(page)
  60.  
  61.  
  62.     try:
  63.         print(page)
  64.         book_list = paginator.page(page)
  65.     except PageNotAnInteger:
  66.         book_list = paginator.page(1)
  67.     except EmptyPage:
  68.         book_list = paginator.page(paginator.num_pages)
  69.  
  70.  
  71.     return render(request,"index.html",{"book_list":book_list,"paginator":paginator,"currentPage":currentPage})
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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>Title</title>
  6.     <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" 
        integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
  7. </head>
  8. <body>
  9.  
  10. <div class="container">
  11.  
  12.     <h4>分页器</h4>
  13.     <ul>
  14.  
  15.         {% for book in book_list %}
  16.              <li>{{ book.title }} -----{{ book.price }}</li>
  17.         {% endfor %}
  18.  
  19.      </ul>
  20.  
  21.  
  22.     <ul class="pagination" id="pager">
  23.  
  24.                  {% if book_list.has_previous %}
  25.                     <li class="previous"><a href="/index/?page={{ book_list.previous_page_number }}">上一页</a></li>
  26.                  {% else %}
  27.                     <li class="previous disabled"><a href="#">上一页</a></li>
  28.                  {% endif %}
  29.  
  30.  
  31.                  {% for num in paginator.page_range %}
  32.  
  33.                      {% if num == currentPage %}
  34.                        <li class="item active"><a href="/index/?page={{ num }}">{{ num }}</a></li>
  35.                      {% else %}
  36.                        <li class="item"><a href="/index/?page={{ num }}">{{ num }}</a></li>
  37.  
  38.                      {% endif %}
  39.                  {% endfor %}
  40.  
  41.  
  42.  
  43.                  {% if book_list.has_next %}
  44.                     <li class="next"><a href="/index/?page={{ book_list.next_page_number }}">下一页</a></li>
  45.                  {% else %}
  46.                     <li class="next disabled"><a href="#">下一页</a></li>
  47.                  {% endif %}
  48.  
  49.             </ul>
  50. </div>
  51.  
  52.  
  53.  
  54. </body>
  55. </html>
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  1. def index(request):
  2.  
  3.  
  4.     book_list=Book.objects.all()
  5.  
  6.     paginator = Paginator(book_list, 15)
  7.     page = request.GET.get('page',1)
  8.     currentPage=int(page)
  9.  
  10.     #  如果页数十分多时，换另外一种显示方式
  11.     if paginator.num_pages>11:
  12.  
  13.         if currentPage-5<1:
  14.             pageRange=range(1,11)
  15.         elif currentPage+5>paginator.num_pages:
  16.             pageRange=range(currentPage-5,paginator.num_pages+1)
  17.  
  18.         else:
  19.             pageRange=range(currentPage-5,currentPage+6)
  20.  
  21.     else:
  22.         pageRange=paginator.page_range
  23.  
  24.  
  25.     try:
  26.         print(page)
  27.         book_list = paginator.page(page)
  28.     except PageNotAnInteger:
  29.         book_list = paginator.page(1)
  30.     except EmptyPage:
  31.         book_list = paginator.page(paginator.num_pages)
  32.  
  33.  
  34.     return render(request,"index.html",locals())
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