# name: models.py
from django.db import models
class User(models.Model):
id = models.AutoField(primary_key=True)
username = models.CharField(max_length=32)
password = models.CharField(max_length=32)
# 插入测试数据
import random
def index(request):
for i in range(1,100):
chars = []
pasd = []
for x in range(1,8):
chars.append(random.choice('abcdefghijklmnopqrstuvwxyz'))
pasd.append(random.choice('0987654321'))
user = "".join(chars)
pwd = "".join(pasd)
models.User.objects.create(username=user, password=pwd)
return HttpResponse("ok")
Title
| 序号 | 用户名 | 用户密码 |
|---|---|---|
| {{ article.id }} | {{ article.username }} | {{ article.password }} |
统计: {{ currentPage }}/{{ paginator.num_pages }} 共查询到:{{ paginator.count }} 条数据 页码列表:{{ paginator.page_range }}
# name: views.py
from django.shortcuts import render,HttpResponse
from MyWeb import models
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
def page(request):
user = models.User.objects.all()
paginator = Paginator(user, 10)
currentPage = int(request.GET.get("id",1))
try:
user_list = paginator.page(currentPage)
except PageNotAnInteger:
user_list = paginator.page(1)
except:
user_list = paginator.page(paginator.num_pages)
return render(request,"page.html",{"user_list":user_list,
"paginator":paginator,
"currentPage":currentPage})
# name: urls.py
from MyWeb import views
urlpatterns = [
path('admin/', admin.site.urls),
path('page',views.page)
]
上方的分页代码还有一个不足之处,当我们的页码数量过多时,会全部展示出来,整个页面都是很不美观,我们直接在上方代码上稍加修改一下试试.
# name: views.py
from django.shortcuts import render,HttpResponse
from MyWeb import models
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
def page(request):
user = models.User.objects.all()
paginator = Paginator(user, 10)
currentPage = int(request.GET.get("id",1))
if paginator.num_pages > 15:
if currentPage-5 < 1:
pageRange = range(1,11)
elif currentPage+5 > paginator.num_pages:
pageRange = range(currentPage-5,paginator.num_pages)
else:
pageRange = range(currentPage-5,currentPage+5)
else:
pageRange = paginator.page_range
try:
user_list = paginator.page(currentPage)
except PageNotAnInteger:
user_list = paginator.page(1)
except:
user_list = paginator.page(paginator.num_pages)
return render(request,"page.html",{"user_list":user_list,
"paginator":paginator,
"page_range":pageRange, # 此处自定义一个分页段
"currentPage":currentPage})
前端分页代码只需要将paginator.page_range改为page_range其他地方不需要动.
{% for item in page_range %}
{% if item == currentPage %}
这样，无论有多少页面，都能够保证只显示10页。
分页后添加删除功能
1.删除功能的实现，很简单，只需要定位得到指定的tr上，取出里面的id号码，并发送给后端，执行sql删除就完事了。
Title
| 选择 | 序号 | 用户名 | 用户密码 |
|---|---|---|---|
| {{ article.id }} | {{ article.username }} | {{ article.password }} |
实现模态框编辑内容
点击选中行，然后弹出模态框，并自动的获取到该行数据，编辑好以后直接用ajax发送post请求到后端处理即可。
| 选择 | 用户ID | 用户名称 | 用户邮箱 |
|---|---|---|---|
| 1001 | lyshark | [email protected] | |
| 1002 | 搞事情 | [email protected] |
完整代码笔记
利用BootStrap框架实现分页: 通过使用bootstrap框架,并配合Django自带的分页组件即可实现简单的分页效果.
# name: models.py
from django.db import models
class User(models.Model):
id = models.AutoField(primary_key=True)
username = models.CharField(max_length=32)
password = models.CharField(max_length=32)
# 插入测试数据
import random
def index(request):
for i in range(1,1000):
chars = []
pasd = []
for x in range(1,8):
chars.append(random.choice('abcdefghijklmnopqrstuvwxyz'))
pasd.append(random.choice('0987654321'))
user = "".join(chars)
pwd = "".join(pasd)
models.User.objects.create(username=user, password=pwd)
return HttpResponse("ok")
Title
| 序号 | 用户名 | 用户密码 |
|---|---|---|
| {{ article.id }} | {{ article.username }} | {{ article.password }} |
统计: {{ currentPage }}/{{ paginator.num_pages }} 共查询到:{{ paginator.count }} 条数据 页码列表:{{ paginator.page_range }}
# name: views.py
from django.shortcuts import render,HttpResponse
from MyWeb import models
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
def page(request):
user = models.User.objects.all()
paginator = Paginator(user, 10)
currentPage = int(request.GET.get("id",1))
try:
user_list = paginator.page(currentPage)
except PageNotAnInteger:
user_list = paginator.page(1)
except:
user_list = paginator.page(paginator.num_pages)
return render(request,"page.html",{"user_list":user_list,
"paginator":paginator,
"currentPage":currentPage})
# name: urls.py
from MyWeb import views
urlpatterns = [
path('admin/', admin.site.urls),
path('page',views.page)
]
上方的分页代码还有一个不足之处,当我们页面中的页码数量过多时,默认会将页码全部展示出来,整个页面看上去很不美观,我们可以直接在上方分页代码上稍加修改即可,如下代码.
# name: views.py
from django.shortcuts import render,HttpResponse
from MyWeb import models
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
def page(request):
user = models.User.objects.all()
paginator = Paginator(user, 10)
currentPage = int(request.GET.get("id",1))
if paginator.num_pages > 15:
if currentPage-5 < 1:
pageRange = range(1,11)
elif currentPage+5 > paginator.num_pages:
pageRange = range(currentPage-5,paginator.num_pages)
else:
pageRange = range(currentPage-5,currentPage+5)
else:
pageRange = paginator.page_range
try:
user_list = paginator.page(currentPage)
except PageNotAnInteger:
user_list = paginator.page(1)
except:
user_list = paginator.page(paginator.num_pages)
return render(request,"page.html",{"user_list":user_list,
"paginator":paginator,
"page_range":pageRange, # 此处自定义一个分页段
"currentPage":currentPage})
前端分页代码只需要将paginator.page_range改为page_range其他地方不需要动.
{% for item in page_range %}
{% if item == currentPage %}
利用layui框架实现分页:
layui是一个完整的前端开发框架,利用它可以快速构建分页应用,比BootStrap更加灵活.
# models.py
from django.db import models
class HostDB(models.Model):
id = models.AutoField(primary_key=True)
hostname = models.CharField(max_length=64)
hostaddr = models.CharField(max_length=64)
hostmode = models.CharField(max_length=64)
# views.py
from django.shortcuts import render,HttpResponse
from django.core.paginator import Paginator,EmptyPage,PageNotAnInteger
from MyWeb import models
import json
def index(request):
return render(request,"index.html")
def get_page(request):
data = models.HostDB.objects.all()
dataCount = data.count()
pageIndex = request.GET.get("pageIndex")
pageSize = request.GET.get("pageSize")
print("当前索引:{} 当前大小:{}".format(pageIndex,pageSize))
print("所有记录:{} 数据总条数:{}".format(data,dataCount))
# 将数据组装成字典后放入data_list列表
data_list,ref_data = [],[]
for item in data:
dict = { 'id':item.id , 'hostname':item.hostname, 'hostaddr':item.hostaddr, 'hostmode':item.hostmode }
data_list.append(dict)
# 使用分页器分页
pageInator = Paginator(data_list,pageSize)
context = pageInator.page(pageIndex)
for item in context:
ref_data.append(item)
# 返回分页格式
data = { "code": 0,"msg": "ok","DataCount": dataCount,"data": ref_data }
return HttpResponse(json.dumps(data))
# name: url.py
from MyWeb import views
urlpatterns = [
path('admin/', admin.site.urls),
path('',views.index),
path('get_page/',views.get_page)
]
layui实现完整表格分页:
通过使用layui框架完成的一个相对完整的表格分页,可用于生产环境.
# name:views.py
from django.shortcuts import render,HttpResponse
from django.core.paginator import Paginator,EmptyPage,PageNotAnInteger
from MyWeb import models
import json
def index(request):
return render(request,"index.html")
def get_page(request):
data = models.HostDB.objects.all()
dataCount = data.count()
pageIndex = request.GET.get("pageIndex")
pageSize = request.GET.get("pageSize")
print("当前索引:{} 当前大小:{}".format(pageIndex,pageSize))
print("所有记录:{} 数据总条数:{}".format(data,dataCount))
list = []
res = []
for item in data:
dict = {}
dict['id'] = item.id
dict['hostname'] = item.hostname
dict['hostaddr'] = item.hostaddr
dict['hostmode'] = item.hostmode
list.append(dict)
pageInator = Paginator(list,pageSize)
context = pageInator.page(pageIndex)
for item in context:
res.append(item)
data = { "code": 0,"msg": "ok","DataCount": dataCount,"data": res }
return HttpResponse(json.dumps(data))
def search_page(request):
sql = request.GET.get("hostname")
data = models.HostDB.objects.all().filter(hostname=sql)
list = []
for item in data:
dict = {}
dict['id'] = item.id
dict['hostname'] = item.hostname
dict['hostaddr'] = item.hostaddr
dict['hostmode'] = item.hostmode
list.append(dict)
data = { "code": 0,"msg": "ok","DataCount": 1,"data": list }
return HttpResponse(json.dumps(data))
def delete_page(request):
get_id = request.GET.get("id")
models.HostDB.objects.filter(id=get_id).delete()
return render(request,"index.html")
def update_page(request):
get_id = request.GET.get("id")
get_hostname = request.GET.get("hostname")
get_hostaddr = request.GET.get("hostaddr")
get_hostmode = request.GET.get("hostmode")
print(get_hostmode)
obj = models.HostDB.objects.get(id=get_id)
obj.hostname = get_hostname
obj.hostaddr = get_hostaddr
obj.hostmode = get_hostmode
obj.save()
return render(request,"index.html")
# name: urls.py
from MyWeb import views
urlpatterns = [
path('',views.index),
path('get_page/',views.get_page),
path('search_page/',views.search_page),
path('delete_page/',views.delete_page),
path("update_page/",views.update_page)
]
自己实现分页:
转载代码，仅用于收藏。
from urllib.parse import urlencode
class Pagination(object):
def __init__(self,current_page,total_count,base_url,params,per_page_count=10,max_pager_count=10):
try:
current_page = int(current_page)
except Exception as e:
current_page = 1
if current_page <= 1:
current_page = 1
self.current_page = current_page
# 数据总条数
self.total_count = total_count
# 每页显示10条数据
self.per_page_count = per_page_count
# 页面上应该显示的最大页码
max_page_num, div = divmod(total_count, per_page_count)
if div:
max_page_num += 1
self.max_page_num = max_page_num
# 页面上默认显示11个页码（当前页在中间）
self.max_pager_count = max_pager_count
self.half_max_pager_count = int((max_pager_count - 1) / 2)
# URL前缀
self.base_url = base_url
# request.GET
import copy
params = copy.deepcopy(params)
# params._mutable = True
get_dict = params.to_dict()
# 包含当前列表页面所有的搜/索条件
self.params = get_dict
@property
def start(self):
return (self.current_page - 1) * self.per_page_count
@property
def end(self):
return self.current_page * self.per_page_count
def page_html(self):
# 如果总页数 <= 11
if self.max_page_num <= self.max_pager_count:
pager_start = 1
pager_end = self.max_page_num
# 如果总页数 > 11
else:
# 如果当前页 <= 5
if self.current_page <= self.half_max_pager_count:
pager_start = 1
pager_end = self.max_pager_count
else:
# 当前页 + 5 > 总页码
if (self.current_page + self.half_max_pager_count) > self.max_page_num:
pager_end = self.max_page_num
pager_start = self.max_page_num - self.max_pager_count + 1 #倒这数11个
else:
pager_start = self.current_page - self.half_max_pager_count
pager_end = self.current_page + self.half_max_pager_count
page_html_list = []
# {source:[2,], status:[2], gender:[2],consultant:[1],page:[1]}
# 首页
self.params['page'] = 1
first_page = '首页' % (self.base_url,urlencode(self.params),)
page_html_list.append(first_page)
# 上一页
self.params["page"] = self.current_page - 1
if self.params["page"] <= 1:
pervious_page = '上一页' % (self.base_url, urlencode(self.params))
else:
pervious_page = '上一页' % ( self.base_url, urlencode(self.params))
page_html_list.append(pervious_page)
# 中间页码
for i in range(pager_start, pager_end + 1):
self.params['page'] = i
if i == self.current_page:
temp = '%s' % (self.base_url,urlencode(self.params), i,)
else:
temp = '%s' % (self.base_url,urlencode(self.params), i,)
page_html_list.append(temp)
# 下一页
self.params["page"] = self.current_page + 1
if self.params["page"] > self.max_page_num:
self.params["page"] = self.current_page
next_page = '下一页' % (self.base_url, urlencode(self.params))
else:
next_page = '下一页' % (self.base_url, urlencode(self.params))
page_html_list.append(next_page)
# 尾页
self.params['page'] = self.max_page_num
last_page = '尾页' % (self.base_url, urlencode(self.params),)
page_html_list.append(last_page)
return ''.join(page_html_list)
文章出处：https://www.cnblogs.com/lyshark
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