app01 --> page
#自定义分页
#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
//代码效果参考：http://www.jhylw.com.cn/011324707.html
: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
'''
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
half_page_range //代码效果参考：http://www.jhylw.com.cn/262834415.html
= 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)
# params【'page'】 = current_page_num
# query_str = params.urlencode()
#数据切片依据,起始位置
@property
def start_num(self):
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 += ''
#首页
self.params【'page'】 = 1
showye = '首页'.format(self.base_url,self.params.urlencode())
tab_html += showye
# 上一页
if self.current_page_num == 1:
previous_page = '«'
else:
self.params【'page'】 = self.current_page_num - 1
previous_page = '«'.format(
self.base_url,self.params.urlencode())
tab_html += previous_page
#循环生成页码标签
for i in range(self.page_start, self.page_end + 1):
if self.current_page_num == i:
else:
one_tag = '{1}'.format(self.base_url, i,self.params.urlencode())
tab_html += one_tag
# 下一页
if self.current_page_num == self.page_number_count:
next_page = '»'
else:
self.params【'page'】 = self.current_page_num + 1
next_page = '»'.format(self.base_url, self.params.urlencode())
tab_html += next_page
# 尾页
self.params【'page'】 = self.page_number_count
weiye = '尾页'.format(
self.base_url, self.params.urlencode())
tab_html += weiye
tab_html += ''
return tab_html
#函数low鸡版
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()
# 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
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 += ''
#上一页
if current_page_num == 1:
previous_page = '«'
else:
previous_page = '«'.format(base_url,current_page_num-1)
tab_html += previous_page
for i in range(page_start,page_end+1):
if current_page_num == i:
one_tag = '{1}'.format(base_url,i)
else:
one_tag = '{1}'.format(base_url, i)
tab_html += one_tag
#下一页
if current_page_num == page_number_count:
next_page = '»'
else:
next_page = '»'.format(base_url,current_page_num+1)
tab_html+=next_page
tab_html += ''
return tab_html,start_num,end_num
app01--> views
from django.shortcuts import render,HttpResponse,redirect
import os
from django.contrib import auth
from app01.models import UserInfo
from crm import settings
from django.views import View
from django import forms
from app01 import models
from django.utils.decorators import method_decorator
from django.contrib.auth.decorators import login_required
# Create your views here.
class RegForm(forms.Form):
username = forms.CharField(
label='用户名',
max_length=12,
min_length=6,
error_messages={
'max_length':'用户名不能超过12位',
'min_length':'用户名不能低于6位',
'required':'用户名不能为空',
}
)
password = forms.CharField(
label='密码',
max_length=16,
min_length=6,
error_messages={
'max_length': '密码不能超过12位',
'min_length': '密码不能低于6位',
'required': '密码不能为空',
},
widget=forms.widgets.PasswordInput(render_value=True),
)
r_password = forms.CharField(
label='密码',
max_length=16,
min_length=6,
error_messages={
'max_length': '密码不能超过12位',
'min_length': '密码不能低于6位',
'required': '密码不能为空',
},
widget=forms.widgets.PasswordInput,
)
def init(self,args,**kwargs):
super().init(args,**kwargs)
for field in self.fields:
self.fields【field】.widget.attrs.update({'class':'form-control'})
def get_valid_img(request):
from PIL import Image
#终极版，方式5
import random
def get_random_color():
return (random.randint(0,255),random.randint(0,255),random.randint(0,255))
from PIL import Image,ImageDraw,ImageFont
img_obj = Image.new('RGB', (236, 34), get_random_color()) #图片对象
draw_obj = ImageDraw.Draw(img_obj) #通过图片对象生成一个画笔对象
font_path = os.path.join(settings.BASE_DIR,'statics/font/ziti.TTF') #获取字体,注意有些字体文件不能识别数字，所以如果数字显示不出来，就换个字体
font_obj = ImageFont.truetype(font_path,16) #创建字体对象
sum_str = '' #这个数据就是用户需要输入的验证码的内容
for i in range(6):
a = random.choice(【str(random.randint(0,9)), chr(random.randint(97,122)), chr(random.randint(65,90))】) #4 a 5 D 6 S
sum_str += a
# print(sum_str)
draw_obj.text((84,10),sum_str,fill=get_random_color(),font=font_obj) #通过画笔对象，添加文字
Width＜/span>=236
Height＜/span>=34
# 添加噪线
