学神python全栈学习笔记CMDB系统---第二章 python_cmdb_前端样式
第二章 python_cmdb_前端样式
本节所讲内容：
2.1 基于bootstrip的模态框绘制
2.2 基于 forms的表单定义
2.3 基于JQ的前端校验
2.4 表单提交完成注册
2.5 基于cmdb的ajax表单提交
2.6 基于SB-Admin的图表绘制
我们以用户注册表单为例，用bootstrap+jq实现前端样式
2.1 基于bootstrap的模态框绘制
我们把用户注册做到一个模态框里面，模态框看着很复杂，实际上很有规律。
模态框分为两部分：
- 模态框触发按钮
前端界面
\XueGodCMDB36\templates\user_index.html:
通过用户注册触发模态框
{% block page-header %}
<!--模态框触发部分-->
<!--
data-toggle 以何种形式展示模态框 modal、popover
data-target 模态框id
-->
<div class="container-fluid">
<div class="col-md-8">
用户管理
</div>
<div class="col-md-4" style="text-align:right">
<button class="btn btn-default" data-toggle="modal" data-target="#register_user_modal">用户注册</button>
<button class="btn btn-default" data-toggle="modal" data-target="#logout_user_modal">用户退出</button>
</div>
</div>
<!--模态框触发部分结束-->
{% endblock %}
被触发的模态框：
{% block content %}
<!--模态框展示部分-->
<!--
tabindex table 导航的顺序
role = dialog 指定展示的样式（角色）为模态框
aria-labelledby = "MyLabel" 获取值
footer 页脚
-->
<div class="modal fade" data-toggle="modal" id="register_user_modal" tabindex="-1" role="dialog"
aria-labelledby="Mylabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="MyLabel">用户注册</h4>
</div>
<form method="post" id="register_form" enctype="multipart/form-data">
{% csrf_token %}
<div class="modal-body">
{% for formitem in user_from %}
<div class="form-group input-group">
<span class="input-group-addon">{{ formitem.label }}</span>
{{ formitem }}
</div>
{% endfor %}
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
<button type="submit" class="btn btn-primary" id="add_user_submit">提交</button>
</div>
</form>
</div>
</div>
</div>
<!--模态框展示部分结束-->
模态框效果：
基于 forms的表单定义
Django给我们提供了一个很棒的类叫做forms
定义forms文件
代码如下：
\XueGodCMDB36\User\forms.py:
# !/usr/bin/env python
# -*- coding: utf-8 -*-
from django import forms
from django.forms import widgets
class CMDBUserForm(forms.Form):
name = forms.CharField(
max_length=6, # 长度限制的验证优先级高于前端验证，前后端都要验证，且限制规则相同
min_length=2,
label='用户账号',
widget=widgets.TextInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 2,
'maxlength': 6,
}
),
error_messages={
'max_length':'用户名最大6位',
'min_length':'用户名最小2位',
'required':'用户名不能为空'
}
)
password = forms.CharField(
max_length=6,
min_length=2,
label='用户密码',
widget=widgets.PasswordInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 2,
'maxlength': 6,
}
)
)
nickname = forms.CharField(
max_length=6,
min_length=2,
label='用户姓名',
widget=widgets.TextInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 2,
'maxlength': 6,
}
)
)
phone = forms.CharField(
max_length=11,
min_length=11,
label='用户电话',
widget=widgets.TextInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 11,
'maxlength': 11,
}
)
)
email = forms.EmailField(
label='用户邮箱',
widget=widgets.EmailInput(
attrs={
'class': 'form-control',
'required': '',
}
)
)
photo = forms.ImageField(
label='用户照片',
allow_empty_file=True,
widget=widgets.FileInput(
attrs={
'id': 'logo_file',
'class': 'file-input-new btn btn-primary btn-file',
'style': " margin: auto;",
'required': '',
}
)
)
视图加载，前端渲染
修改forms的样式
我们修改forms的样式，不能随着自己的想法，要安装模板的格式
给forms添加bootstrap样式
循环生成表单
代码如下：
{% block content %}
<!--模态框展示部分-->
<!--
tabindex table 导航的顺序
role = dialog 指定展示的样式（角色）为模态框
aria-labelledby = "MyLabel" 获取值
footer 页脚
-->
<div class="modal fade" data-toggle="modal" id="register_user_modal" tabindex="-1" role="dialog"
aria-labelledby="Mylabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="MyLabel">用户注册</h4>
</div>
<form method="post" id="register_form" enctype="multipart/form-data">
{% csrf_token %}
<div class="modal-body">
{% for formitem in user_from %}
<div class="form-group input-group">
<span class="input-group-addon">{{ formitem.label }}</span>
{{ formitem }}
</div>
{% endfor %}
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
<button type="submit" class="btn btn-primary" id="add_user_submit">提交</button>
</div>
</form>
</div>
</div>
</div>
<!--模态框展示部分结束-->
<div class="modal fade" data-toggle="modal" id="logout_user_modal" tabindex="-1" role="dialog"
aria-labelledby="Mylabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="MyLabel">用户注销</h4>
</div>
<form action="{% url 'logout' %}" method="get" id="logout_dialog" >
{% csrf_token %}
<div class="modal-body">
<div class="form-group input-group">
退出当前用户？
{# <span class="input-group-addon">{{ formitem.label }}</span>#}
{# {{ formitem }}#}
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
<button type="submit" class="btn btn-primary" id="logout_user_submit">提交</button>
</div>
</form>
</div>
</div>
</div>
<!--模态框展示部分结束-->
<div class="container-fluid">
<div class="col-md-6">
</div>
</div>
{% endblock %}
基于JQ的前端校验
From前端校验对于所有同学来说，都是一个难点，今天推荐jq扩展框架jq_validate是jq扩展的校验库，拥有丰富的校验功能，有jq开发小组成员开发。
- 导入框架
下载jq-validation包
取出自己需要的jq脚本
Jquery.validate.min.js 校验功能的压缩包
Jquery.validate支持40多种语言，我们还需要下载汉化包
我们将两个js脚本复制到我们的目录下
然后执行导入
form上添加校验属性：
代码:
# !/usr/bin/env python
# -*- coding: utf-8 -*-
from django import forms
from django.forms import widgets
class CMDBUserForm(forms.Form):
name = forms.CharField(
max_length=6, # 长度限制的验证优先级高于前端验证，前后端都要验证，且限制规则相同
min_length=2,
label='用户账号',
widget=widgets.TextInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 2,
'maxlength': 6,
}
),
error_messages={
'max_length':'用户名最大6位',
'min_length':'用户名最小2位',
'required':'用户名不能为空'
}
)
password = forms.CharField(
max_length=6,
min_length=2,
label='用户密码',
widget=widgets.PasswordInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 2,
'maxlength': 6,
}
)
)
nickname = forms.CharField(
max_length=6,
min_length=2,
label='用户姓名',
widget=widgets.TextInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 2,
'maxlength': 6,
}
)
)
phone = forms.CharField(
max_length=11,
min_length=11,
label='用户电话',
widget=widgets.TextInput(
attrs={
'class': 'form-control',
'required': '',
'minlength': 11,
'maxlength': 11,
}
)
)
email = forms.EmailField(
label='用户邮箱',
widget=widgets.EmailInput(
attrs={
'class': 'form-control',
'required': '',
}
)
)
photo = forms.ImageField(
label='用户照片',
allow_empty_file=True,
widget=widgets.FileInput(
attrs={
'id': 'logo_file',
'class': 'file-input-new btn btn-primary btn-file',
'style': " margin: auto;",
'required': '',
}
)
)
前端js定义校验规则和提示
代码：
{% block script %}
<!-- jQuery -->
<script src="/static/vendor/jquery/jquery.min.js"></script>
<!-- Bootstrap Core JavaScript -->
<script src="/static/vendor/bootstrap/js/bootstrap.min.js"></script>
<!-- Metis Menu Plugin JavaScript -->
<script src="/static/vendor/metisMenu/metisMenu.min.js"></script>
<!-- DataTables JavaScript -->
<script src="/static/vendor/datatables/js/jquery.dataTables.min.js"></script>
<script src="/static/vendor/datatables-plugins/dataTables.bootstrap.min.js"></script>
<script src="/static/vendor/datatables-responsive/dataTables.responsive.js"></script>
<!-- Custom Theme JavaScript -->
<script src="/static/dist/js/sb-admin-2.js"></script>
<!-- 前端表单验证js，注意2个库的顺序 -->
<script src="/static/vendor/jquery/jquery.validate.min.js"></script>
<script src="/static/vendor/jquery/messages_zh.min.js"></script>
<!-- Page-Level Demo Scripts - Tables - Use for reference -->
<script>
$().ready(
function () {
$('#register_form').validate(
{
<!-- 前端表单验证规则 -->
rules: {
id_name: {
required: true,
minlength: 2,
maxlength: 6,
},
id_password: {
required: true,
minlength: 2,
maxlength: 6,
},
id_nickname: {
required: true,
minlength: 2,
maxlength: 6,
},
id_phone: {
required: true,
},
id_email: {
required: true,
}
},
<!-- 前端表单验证失败提示消息 -->
messages: {
id_name: {
required: '用户名不能为空',
minlength: '用户名长度必须大于2',
maxlength: '用户名长度必须小于6',
},
id_password: {
required: '密码不能为空',
minlength: '密码长度必须大于2',
maxlength: '密码长度必须小于6',
},
id_nickname: {
required: '用户姓名不能为空',
minlength: '用户姓名长度必须大于2',
maxlength: '用户姓名长度必须小于6',
},
id_phone: {
required: '',
minlength: '请输入正确长度(不少于11位)的用户电话',
maxlength: '请输入正确长度(不大于11位)的用户电话',
},
id_email: {
required: '用户邮箱不能为空',
},
},
submitHandler: function (form) {
data = $('#register_form').serializeArray()//没有文件,可以用这个方式获取form数据
var formdata = new FormData();//获取含有文件的form数据
for (var k in data){
console.log(data[k])
formdata.append(data[k]['name'],data[k]['value'])
}
//添加文件到formdata
file = $('#logo_file')[0].files[0]
console.log(file)
formdata.append('photo',file)
//获取csrftoken，提交给到后端验证
var csrftoken = data[0]['value']
$.post({
url:'/index/',
data:formdata,
async:false,
traditional:true,//是否深度序列化数据,true为不深度
processData:false,//是否序列化
contentType:false,//信息的类型
beforeSend:function (xhr,settings) {
xhr.setRequestHeader('X-CSRFToken',csrftoken)
},
<!--=========后台验证结果在此返回，前台判断显示==========-->
success:function (data) {
console.log(data['data'])
if (data['status'] == 'success'){
toastr.success(data['data'])
//等待弹出toastr后再刷新页面
setTimeout(function(){ window.location.reload() }, 2000);
}//保存失败，文件大小太大
if (data['status'] == 'save fail'){
toastr.error(data['data'])
}
if (data['status'] == 'is_valid error'){
toastr.error(data['data'])
}
},
error:function (error) {
console.log(error['data'])
toastr.error(error['data'])
},
})
},
}
)
}
)
</script>
{% endblock %}
注意：最长限制不会显示，只会超过最长长度后无法输入
完整代码如下：
前端：
{% extends 'base.html' %}
{% block title %}
<title>S-CMDB管理系统 首页</title>
{% endblock %}
{% block style %}
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<!-- Bootstrap Core CSS -->
<link href="/static/vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<!-- MetisMenu CSS -->
<link href="/static/vendor/metisMenu/metisMenu.min.css" rel="stylesheet">
<!-- DataTables CSS -->
<link href="/static/vendor/datatables-plugins/dataTables.bootstrap.css" rel="stylesheet">
<!-- DataTables Responsive CSS -->
<link href="/static/vendor/datatables-responsive/dataTables.responsive.css" rel="stylesheet">
<!-- Custom CSS -->
<link href="/static/dist/css/sb-admin-2.css" rel="stylesheet">
<!-- Custom Fonts -->
<link href="/static/vendor/font-awesome/css/font-awesome.min.css" rel="stylesheet" type="text/css">
{% endblock %}
{% block navbar-brand %}
<a class="navbar-brand" href="yl/index.html">S-CMDB管理系统</a>
{% endblock %}
{% block page-header %}
<!--模态框触发部分-->
<!--
data-toggle 以何种形式展示模态框 modal、popover
data-target 模态框id
-->
<div class="container-fluid">
<div class="col-md-8">
用户管理
</div>
<div class="col-md-4" style="text-align:right">
<button class="btn btn-default" data-toggle="modal" data-target="#register_user_modal">用户注册</button>
<button class="btn btn-default" data-toggle="modal" data-target="#logout_user_modal">用户退出</button>
</div>
</div>
<!--模态框触发部分结束-->
{% endblock %}
{% block content %}
<!--模态框展示部分-->
<!--
tabindex table 导航的顺序
role = dialog 指定展示的样式（角色）为模态框
aria-labelledby = "MyLabel" 获取值
footer 页脚
-->
<div class="modal fade" data-toggle="modal" id="register_user_modal" tabindex="-1" role="dialog"
aria-labelledby="Mylabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="MyLabel">用户注册</h4>
</div>
<form method="post" id="register_form" enctype="multipart/form-data">
{% csrf_token %}
<div class="modal-body">
{% for formitem in user_from %}
<div class="form-group input-group">
<span class="input-group-addon">{{ formitem.label }}</span>
{{ formitem }}
</div>
{% endfor %}
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
<button type="submit" class="btn btn-primary" id="add_user_submit">提交</button>
</div>
</form>
</div>
</div>
</div>
<!--模态框展示部分结束-->
<div class="modal fade" data-toggle="modal" id="logout_user_modal" tabindex="-1" role="dialog"
aria-labelledby="Mylabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="MyLabel">用户注销</h4>
</div>
<form action="{% url 'logout' %}" method="get" id="logout_dialog" >
{% csrf_token %}
<div class="modal-body">
<div class="form-group input-group">
退出当前用户？
{# <span class="input-group-addon">{{ formitem.label }}</span>#}
{# {{ formitem }}#}
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
<button type="submit" class="btn btn-primary" id="logout_user_submit">提交</button>
</div>
</form>
</div>
</div>
</div>
<!--模态框展示部分结束-->
<div class="container-fluid">
<div class="col-md-6">
</div>
</div>
{% endblock %}
{#{% block content %}#}
{# <h1>设备管理首页</h1>#}
{#{% endblock %}#}
{% block script %}
<!-- jQuery -->
<script src="/static/vendor/jquery/jquery.min.js"></script>
<!-- Bootstrap Core JavaScript -->
<script src="/static/vendor/bootstrap/js/bootstrap.min.js"></script>
<!-- Metis Menu Plugin JavaScript -->
<script src="/static/vendor/metisMenu/metisMenu.min.js"></script>
<!-- DataTables JavaScript -->
<script src="/static/vendor/datatables/js/jquery.dataTables.min.js"></script>
<script src="/static/vendor/datatables-plugins/dataTables.bootstrap.min.js"></script>
<script src="/static/vendor/datatables-responsive/dataTables.responsive.js"></script>
<!-- Custom Theme JavaScript -->
<script src="/static/dist/js/sb-admin-2.js"></script>
<!-- 前端表单验证js，注意2个库的顺序 -->
<script src="/static/vendor/jquery/jquery.validate.min.js"></script>
<script src="/static/vendor/jquery/messages_zh.min.js"></script>
<!-- Page-Level Demo Scripts - Tables - Use for reference -->
<script>
$().ready(
function () {
$('#register_form').validate(
{
<!-- 前端表单验证规则 -->
rules: {
id_name: {
required: true,
minlength: 2,
maxlength: 6,
},
id_password: {
required: true,
minlength: 2,
maxlength: 6,
},
id_nickname: {
required: true,
minlength: 2,
maxlength: 4,
},
id_phone: {
required: true,
},
id_email: {
required: true,
}
},
<!-- 前端表单验证失败提示消息 -->
messages: {
id_name: {
required: '用户名不能为空',
minlength: '用户名长度必须大于2',
maxlength: '用户名长度必须小于6',
},
id_password: {
required: '密码不能为空',
minlength: '密码长度必须大于2',
maxlength: '密码长度必须小于6',
},
id_nickname: {
required: '用户姓名不能为空',
minlength: '用户姓名长度必须大于2',
maxlength: '用户姓名长度必须小于6',
},
id_phone: {
required: '',
minlength: '请输入正确长度(不少于11位)的用户电话',
maxlength: '请输入正确长度(不大于11位)的用户电话',
},
id_email: {
required: '用户邮箱不能为空',
},
},
submitHandler: function (form) {
data = $('#register_form').serializeArray()//没有文件,可以用这个方式获取form数据
var formdata = new FormData();//获取含有文件的form数据
for (var k in data){
console.log(data[k])
formdata.append(data[k]['name'],data[k]['value'])
}
//添加文件到formdata
file = $('#logo_file')[0].files[0]
console.log(file)
formdata.append('photo',file)
//获取csrftoken，提交给到后端验证
var csrftoken = data[0]['value']
$.post({
url:'/index/',
data:formdata,
async:false,
traditional:true,//是否深度序列化数据,true为不深度
processData:false,//是否序列化
contentType:false,//信息的类型
beforeSend:function (xhr,settings) {
xhr.setRequestHeader('X-CSRFToken',csrftoken)
},
<!--=========后台验证结果在此返回，前台判断显示==========-->
success:function (data) {
console.log(data['data'])
if (data['status'] == 'success'){
toastr.success(data['data'])
//等待弹出toastr后再刷新页面
setTimeout(function(){ window.location.reload() }, 2000);
}//保存失败，文件大小太大
if (data['status'] == 'save fail'){
toastr.error(data['data'])
}
if (data['status'] == 'is_valid error'){
toastr.error(data['data'])
}
},
error:function (error) {
console.log(error['data'])
toastr.error(error['data'])
},
})
},
}
)
}
)
</script>
{% endblock %}
后端view.py:
import os
from django.conf import settings
from django.http import JsonResponse
from django.shortcuts import render, render_to_response, HttpResponseRedirect
# Create your views here.
from django.views.generic import View
from Service.models import CMDBUser
from Users.forms import CMDBUserForm
def login_validate(func):
def is_validate(instance, request, *args, **kwargs):
if request.method == 'GET':
print(request.path)
if request.path == '/user/login':
pass
elif request.path == '/user/logout': # 退出登陆
instance.logout(request)
print(request.GET)
print(request.COOKIES)
return HttpResponseRedirect('/login/')
# 用户已经登入，进行注册操作
elif request.method == 'POST' and request.POST and request.FILES:
print('无需验证，返回给index')
return func(instance, request)
elif request.method == 'POST' and request.POST:
print('is_validate')
print(request.POST)
print(request.COOKIES)
if request.POST.get('username'):
try:
# 判断数据库是否存在该用户
user = CMDBUser.objects.get(username=request.POST.get('username'))
# 该用已成功登陆，并有对应数据库里的用户名生成的cookies就可以不用再查询了，直接返回
# if request.COOKIES['login_ok_cookies'] == user.username:
# return func(instance, request)
print(request.POST.get('username'))
# 密码判断
print(user.password)
if request.POST.get('password') == user.password:
return func(instance, request)
else:
print('用户%s 密码错误' % (user.username))
return HttpResponseRedirect('/login/')
except:
print('%s 这个用户不存在' % (request.POST.get('username')))
return HttpResponseRedirect('/login/')
else:
print('test')
return is_validate
def logout(request):
print(request.COOKIES)
# response = render_to_response('login.html')
response = render(request, 'login.html')
response.delete_cookie('login_ok_cookies')
# response.delete_cookie('login_ok_cookie')
response.delete_cookie('login_cookie')
print(request.COOKIES)
print(response.cookies)
# return response
return HttpResponseRedirect('/login/')
class index(View):
'''
用户管理
'''
@login_validate
def get(self, request):
print(request.method)
print(request.GET)
print(request)
if request.path == '/user/echart':
print(request.path)
return render(request, 'echart_example.html', locals())
elif request.path == '/user/login':
return render_to_response('login.html')
elif request.path == '/user/index' or request.path == '/index/':
pass
user_from = CMDBUserForm()
print(locals())
# if request.GET.get()
return render(request, 'user_index.html', locals())
@login_validate
def post(self, request):
# 用户注册提交
if request.POST and request.FILES:
ret = {'status': '', 'data': ''}
print(request.POST)
print(request.FILES)
user_form = CMDBUserForm(data=request.POST, files=request.FILES)
if user_form.is_valid():
user = CMDBUser()
user.username = user_form.cleaned_data['name'] # key值为form里的字段name
user.password = user_form.cleaned_data['password']
user.nickname = user_form.cleaned_data['nickname']
user.phone = user_form.cleaned_data['phone']
user.email = user_form.cleaned_data['email']
# 判断上传文件大小，小于某值才能上传
file = request.FILES.get('photo') # 尽量不要使用user_form.cleaned_data['file']
filepath = os.path.join(settings.BASE_DIR,
'static\\images\\%s' % (user_form.cleaned_data['photo'].name))
with open(filepath, 'wb') as f:
for chunk in file.chunks():
f.write(chunk)
if os.path.getsize(str(filepath)) < 200000: # 上传问文件小于200kB才能保存，并写入数据库
user.photo = filepath
user.save()
ret['status'] = 'success'
ret['data'] = '%s 用户添加成功' % (user.username)
print('%s 用户添加成功' % (user.username))
else:
ret['status'] = 'save fail'
ret['data'] = '保存失败，%s的文件大小不能超过200KB' % (user_form.cleaned_data['photo'].name)
os.remove(filepath)
print('保存失败，%s的文件大小不能超过200KB' % (user_form.cleaned_data['photo'].name))
else:
print(user_form.errors)
# ret['status'] = 'is_valid error'
ret['data'] = user_form.errors[0]
user_from = CMDBUserForm() # 解决第一次注册后，再次点击用户注册无法显示form内容的问题
jr = JsonResponse(ret)
# return render(request, 'user_index.html', {'user_from':user_from,'data':jr})
# return render(request, 'user_index.html', locals())
return JsonResponse(ret)
# 用户登陆提交
elif request.POST:
print(request.POST)
print(request.COOKIES)
user_from = CMDBUserForm()
response = render(request, 'user_index.html', locals())
response.set_cookie('login_ok_cookies', request.POST.get('username'), max_age=3600)
print(request.POST)
print(request.COOKIES)
print(response.cookies)
return response
def logout(self,request):
print(request.COOKIES)
# response = render_to_response('login.html')
response = render(request, 'login.html')
response.delete_cookie('login_ok_cookies')
# response.delete_cookie('login_ok_cookie')
response.delete_cookie('login_cookie')
print(request.COOKIES)
print(response.cookies)
# return response
return HttpResponseRedirect('/login/')
# def echart(request):
# print(request.path)
# return render(request, 'echart_example.html', locals())
Form表单自定义校验
我们的form表单本身提供了好多写好的校验方法，比如：
Maxlenth
Minlienth
Email
但是还是不够我们在工作当中使用，所以forms推出了自定义校验
格式：
- 必须写在forms类里面
- 校验函数名称必须是clean_字段名称
- 所有要校验的数据都可以通过clean_data.get(字段名称)得到
原理如下：
- 如果判断不符合条件，请诱发ValidationError
- 并且如果符合判断，必须将值返回出来
基于cmdb的ajax表单提交
我们上面完成了基本注册了，下面我们来了解一下我们的django+ajax+form+img上传。
Ajax 提交图片
Ajax 提交表单+图片
- 从前端做起
写ajax步骤
- 收集数据
<script>
$().ready(
function () {
$('#register_form').validate(
{
<!-- 前端表单验证规则 -->
rules: {
id_name: {
required: true,
minlength: 2,
maxlength: 6,
},
id_password: {
required: true,
minlength: 2,
maxlength: 6,
},
id_nickname: {
required: true,
minlength: 2,
maxlength: 4,
},
id_phone: {
required: true,
},
id_email: {
required: true,
}
},
<!-- 前端表单验证失败提示消息 -->
messages: {
id_name: {
required: '用户名不能为空',
minlength: '用户名长度必须大于2',
maxlength: '用户名长度必须小于6',
},
id_password: {
required: '密码不能为空',
minlength: '密码长度必须大于2',
maxlength: '密码长度必须小于6',
},
id_nickname: {
required: '用户姓名不能为空',
minlength: '用户姓名长度必须大于2',
maxlength: '用户姓名长度必须小于6',
},
id_phone: {
required: '',
minlength: '请输入正确长度(不少于11位)的用户电话',
maxlength: '请输入正确长度(不大于11位)的用户电话',
},
id_email: {
required: '用户邮箱不能为空',
},
},
submitHandler: function (form) {
data = $('#register_form').serializeArray()//没有文件,可以用这个方式获取form数据
var formdata = new FormData();//获取含有文件的form数据
for (var k in data){
console.log(data[k])
formdata.append(data[k]['name'],data[k]['value'])
}
//文件的提交方式：添加文件到formdata
file = $('#logo_file')[0].files[0]
console.log(file)
formdata.append('photo',file)
//获取csrftoken，提交给到后端验证
var csrftoken = data[0]['value']
$.post({
url:'/index/',
data:formdata,
async:false,
traditional:true,//是否深度序列化数据,true为不深度
processData:false,//是否序列化
contentType:false,//信息的类型
beforeSend:function (xhr,settings) {
xhr.setRequestHeader('X-CSRFToken',csrftoken)
},
<!--=========后台验证结果在此返回，前台判断显示==========-->
success:function (data) {
console.log(data['data'])
if (data['status'] == 'success'){
toastr.success(data['data'])
//等待弹出toastr后再刷新页面
setTimeout(function(){ window.location.reload() }, 2000);
}//保存失败，文件大小太大
if (data['status'] == 'save fail'){
toastr.error(data['data'])
}
if (data['status'] == 'is_valid error'){
toastr.error(data['data'])
}
},
error:function (error) {
console.log(error['data'])
toastr.error(error['data'])
},
})
},
}
)
}
)
</script>
如果你的form数据包含文件，我们提交需要用到js的一个类型，FormData
FormData.append(key,value) #添加数据
FormData.set(key,value) #修改数据
FormData.getAll(key) #获取值
声明FormData需要先
var formData = new FromData
完整的form表单数据
收集接口
首先简单编写一个接口，进行了子urls编程
发起请求
FormData将csrf值出入当中之后要进行类似json的封装，所以会失效,csrf实际上如果交易的话，是在请求头部的
代码如下：
优化ajax接收接口。
Ajax注册完整代码
user_index.html：
<script>
$().ready(
function () {
$('#register_form').validate(
{
<!-- 前端表单验证规则 -->
rules: {
id_name: {
required: true,
minlength: 2,
maxlength: 6,
},
id_password: {
required: true,
minlength: 2,
maxlength: 6,
},
id_nickname: {
required: true,
minlength: 2,
maxlength: 4,
},
id_phone: {
required: true,
},
id_email: {
required: true,
}
},
<!-- 前端表单验证失败提示消息 -->
messages: {
id_name: {
required: '用户名不能为空',
minlength: '用户名长度必须大于2',
maxlength: '用户名长度必须小于6',
},
id_password: {
required: '密码不能为空',
minlength: '密码长度必须大于2',
maxlength: '密码长度必须小于6',
},
id_nickname: {
required: '用户姓名不能为空',
minlength: '用户姓名长度必须大于2',
maxlength: '用户姓名长度必须小于6',
},
id_phone: {
required: '',
minlength: '请输入正确长度(不少于11位)的用户电话',
maxlength: '请输入正确长度(不大于11位)的用户电话',
},
id_email: {
required: '用户邮箱不能为空',
},
},
submitHandler: function (form) {
data = $('#register_form').serializeArray()//没有文件,可以用这个方式获取form数据
var formdata = new FormData();//获取含有文件的form数据
for (var k in data){
console.log(data[k])
formdata.append(data[k]['name'],data[k]['value'])
}
//文件的提交方式：添加文件到formdata
file = $('#logo_file')[0].files[0]
console.log(file)
formdata.append('photo',file)
//获取csrftoken，提交给到后端验证
var csrftoken = data[0]['value']
$.post({
url:'/index/',
data:formdata,
async:false,
traditional:true,//是否深度序列化数据,true为不深度
processData:false,//是否序列化
contentType:false,//信息的类型
beforeSend:function (xhr,settings) {
xhr.setRequestHeader('X-CSRFToken',csrftoken)
},
<!--=========后台验证结果在此返回，前台判断显示==========-->
success:function (data) {
console.log(data['data'])
if (data['status'] == 'success'){
toastr.success(data['data'])
//等待2s后弹出toastr后再刷新页面
setTimeout(function(){ window.location.reload() }, 2000);
}//保存失败，文件大小太大
if (data['status'] == 'save fail'){
toastr.error(data['data'])
}
if (data['status'] == 'is_valid error'){
toastr.error(data['data'])
}
},
error:function (error) {
console.log(error['data'])
toastr.error(error['data'])
},
})
},
}
)
}
)
</script>
我们完成了注册的核心功能，但是我们还有很大的扩展空间，比如说
注册成功 提示
注册成功 跳转登录（凡是涉及到CMDB或者BIM系统开发，或者其他的管理平台，我们不设置外部注册 ）
人物画像
BIM管理
管理流程
基于SB-Admin的图表绘制
我们在做管理平台的时候，难免会做各式各样的可视化图标，当前市场上已经有很多开发好的js框架，我们今天来学习echart.js绘图。
- 下载echart.js放入目录
- 导入echart.js
{% extends "blank.html" %}
{% block title %}
echartsExample
{% endblock %}
{% block style %}
<script src = "/static/js/echarts.min.js"></script>
{% endblock %}
{% block label %}
echartsExample
{% endblock %}
{% block content %}
{% endblock %}
- 开始绘图
{% extends "blank.html" %}
{% block title %}
EchartsExample
{% endblock %}
{% block style %}
<script src = "/static/js/echarts.min.js"></script>
{% endblock %}
{% block label %}
EchartsExample
{% endblock %}
{% block content %}
<div id = "panel" style = "height: 500px; width: 500px;">
</div>
<script>
//初始化画布
var myChart = echarts.init(document.getElementById("panel"))
//定义选项参数
options = {
title: {
text: "我的柱状图"
},
tooltip:{},
legend:{
data:["学科"]
},
xAxis: {
data:["python","php","jave","linux","c"]
},
yAxis: {},
series: [
{
name: "学科",
type: "bar",
data:[1,4,2,5,3]
}
]
};
myChart.setOption(options)
</script>
{% endblock %}
效果如下
- 总结规律
1、echarts 需要定义画布，而且选择器最好用js
2、echarts主要有以下几种类型
1、bar 柱状图
2、line 折线图
3、gauge 仪表盘
4、pie 饼状图
5、island 孤岛图
6、funnel 漏斗图