From django.shortcuts import renderfrom Django import formsimport refrom django.core.exceptions Import Validationerrordef mobile_validate (value): Mobile_re = Re.compile (R ' ^ (13[0-9]|15[012356789]|17[678]|18[0-9]|14[57] ) [0-9]{8}$ ') if not Mobile_re.match (value): Raise ValidationError (' cell phone number format error ') Class UserInfo (forms. Form): email = forms. Emailfield (error_messages={' Required ': U ' mailbox cannot be empty '}) host = forms. Charfield (error_messages={' Required ': U ' host cannot be empty '}) port = forms. Charfield (error_messages={' Required ': U ' port cannot be empty '}) Mobile = forms. Charfield (Validators=[mobile_validate,], #定义错误规则函数 error_messages={' required ': U ' phone cannot be empty '}, WI Dget=forms. TextInput (attrs={' class ': ' Form-control ', #定义class ' placeholder ': U ' enter phone number '})) Beizhu = forms. Charfield (Required=false, #备注允许为空 widget=forms. Textarea (attrs={' class ': ' Form-control ', #定义为多行输入框 ' placeholder ': U ' enter remarks '})) User_type_choice = ((0, U ' normal user '), (1,u ' Advanced user '),) User_type = forms. Integerfield (Widget=forms.widgets.select (choices=user_type_choice,attrs={' class ': ' Form-control '))
Save user input
Form Form validation and error messageserror message Format:Normal Format:obj = accountform.loginform (Request. POST)
From django.shortcuts import render,httpresponsefrom web.forms import account as Accountformdef login (Request): obj = Accountform.loginform (Request. Post) if Request.method = = ' Post ': if Obj.is_valid (): all_data = Obj.clean () else: #用于Form表单提交 E Rror = obj.errors #print error[' username '][0] #print error[' password '][0] return render (Request, ' Account/lo Gin.html ', {' obj ': obj, ' ERROR ': Error}) return render (Request, ' account/login.html ', {' obj ': obj})Create a simple_tag to make it error[' username '][0]
{% load xx%}<! DOCTYPE html>def Login (Request): obj = accountform.loginform (Request. Post) If Request.method = = ' Post ': If Obj.is_valid (): All_data = Obj.clean () Else: #用于Ajaxerror = Obj.errors.as_json () #print Errorreturn HttpResponse (Error) return render (Request, ' Accou Nt/login.html ', {' obj ': obj, ' ERROR ': Error}) return render (Request, ' account/login.html ', {' obj ': obj})<body> <form action= "/login/" method= "POST" > <p>{{obj.username}} {% error_msg Error.username%} </p> <p>{{Obj.password}} {% error_msg error.password%} </p> <input type= "Submit" value= "Ajax Commit" onclick= "Submitajax ()" > </form> <script src= "{{ Static_url}}js/jquery-2.1.4.min.js "></script> <script>function Submitajax () { $.ajax ({ URL: '/login/', type: ' POST ', data:{' username ': ', ' Password ': '},success:function (ARG) { Console.log (arg )}} </script></body>
form Generation Select label
Static Select Dynamic Select
When you increase database datawill not be updated unless the program is closed and re-loaded will not be updated
WORKAROUND: Take advantage of the static field of the object-oriented classFrom Django Import Formsimport jsonclass importform (forms. Form): #静态selectHOST_TYPE_LIST = ( (0, ' physical Machine '), (1, ' virtual machine '),) Host_type = forms. Integerfield ( widget=forms. Select (choices=host_type_list) ) hostname = forms. Charfield () #动态select # admin_dic = ((1, ' YANGMV '), (1, "Bob"),) # w_obj = open (' Db_admin ', ' W ') # W_ Obj.write (Json.dumps (Admin_dic)) # w_obj.close () f_obj = open (' Db_admin ', ' r ') data = F_obj.read () Data_tuple = json.loads (data) admin = forms. Integerfield ( widget=forms. Select (choices=data_tuple) ) def __init__ (Self,*args,**kwargs): super (Importform,self). __init__ ( *args,**kwargs) tmp = open (' db_admin ') data = Tmp.read () data_tuple = json.loads (data) self.fields[' admin '].widget.choices = data_tupleAdd database data again, refresh the page directly to read the new data optimized code
From Django Import Formsimport jsonclass importform (forms. Form): admin = forms. Integerfield (widget=forms. Select ()) def __init__ (Self,*args,**kwargs): super (Importform,self). __init__ (*args,**kwargs) tmp = Open (' db_admin ') data = Tmp.read () data_tuple = json.loads (data) self.fields[' admin '].widget.choices = Data_tupleget Select data using models(Models operation, later in the article will be described in detail)
Class Select (models. Model): username = models. Charfield (max_length=16) password = models. Charfield (MAX_LENGTH=32)<body> <form action= "/home/" > <p>{{obj.admin}}</p> </form></body >DEF home (Request): obj = homeform.importform () return render (Request, ' home/home.html ', {' obj ': obj})models. Select.objects.all (). Values_list (' id ', ' username ')
Django-form forms (Validation, customization, error messages, Select)
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