Djangoで登録フォームを作成しようとしています。

Question

ここにデータを入力するたびに、ページが再読み込みされ、パスワードと確認パスワードが空白になります。 raise.ValidationErrorは何のアドバイスも表示されませんか？

Views.py

from django.contrib.auth.models import User 
    from django.http import HttpResponse 
    from django.http import HttpResponseRedirect 
    from django.shortcuts import render_to_response 
    from shoghlanah.forms import SignUpForm 
    from django.template import RequestContext 
    from django.views.decorators.csrf import csrf_exempt 
    from django.contrib.auth import authenticate, login 
    from django.contrib.auth import logout 
    from shoghlanah.models import * 



    def EmployerRegistration(request): 
     if request.user.is_authenticated(): 
      return HttpResponseRedirect('/profile/') 
     if request.method == 'POST': 
      form = SignUpForm(request.POST) 
      if form.is_valid(): 
       user=User.objects.create_user(username=form.cleaned_data["username"],password= form.cleaned_data['password'],first_name=form.cleaned_data['first_name'],last_name=form.cleaned_data['last_name'],email=form.cleaned_data['email'],address=form.cleaned_data['address'],mobile=form.cleaned_data['mobile']) 
       user.save() 
       employer =Employer(user=user,first_name=form.cleaned_data['first_name'],last_name=form.cleaned_data['last_name'],email=form.cleaned_data['email'],address=form.cleaned_data['address'],mobile=form.cleaned_data['mobile']) 
       employer.save() 
       #Employer=user.get_profile() 
       #Employer.first_name=form.cleaned_data['first_name'] 
       #Employer.last_name=form.cleaned_data['last_name'] 
       #Employer.address=form.cleaned_data['address'] 
       #Employer.mobile =form.cleaned_data['mobile'] 
       #Employer.save() 
      return HttpResponseRedirect('/login/') 

      #else: 
      # return render_to_response('Sign_up_Employer.html',{'form':form},context,context_instance=RequestContext(request)) 

     else: 
     #user is not submitting show them the registeration form 
       form= SignUpForm() 
       context = {'form':form} 
       return render_to_response('Sign_up_Employer.html',context,context_instance=RequestContext(request)) 

forms.py

from django.contrib.auth.forms import UserCreationForm 
from django.contrib.auth.models import User 
from django import forms 
from django.forms import ModelForm 
from shoghlanah.models import * 


class SignUpForm(ModelForm): 
    username  = forms.CharField(label=(u'Username')) 
    first_name = forms.CharField(label=(u'First name')) 
    last_name  = forms.CharField(label=(u'Last name')) 
    address  = forms.CharField(label=(u'Address')) 
    email   = forms.EmailField(label=(u'Email Address')) 
    password  = forms.CharField(label=(u'Password'),widget=forms.PasswordInput(render_value=False)) 
    password1  = forms.CharField(label=(u'Verify Password'),widget=forms.PasswordInput(render_value=False)) 
    mobile  = forms.IntegerField(label=(u'Mobile')) 

    class Meta: 
     model = Employer 

     exclude =('user',) 

    def clean_username(self): 
     username = self.cleaned_data['username'] 
     try: 
      User.objects.get(username=username) 
     except User.DoesNotExist: 
      return username 

      raise forms.ValidationError("That username already exists. Please select another") 




    def clean(self): 
     if self.cleaned_data['password'] != self.cleaned_data['password1']: 
       raise forms.ValidationError("not matched") 
     return self.cleaned_data 

sign_up_Employer.html

{%block content%} 
<form action ="" method ="post"> 
{% csrf_token %} 
{% if form.errors %}<p>Please Correct </p> {% endif %} 
<div class ="register_div"> 
{%if form.username.errors%}<p class= "error">{{form.username.errors}}</p>{% endif %} 
<p> <label for ="username"{% if form.username.errors %} class= "error"{% endif %}> Username</label></p> 
<p>{{form.username}}</p> 
</div> 
<div class ="register_div"> 
{%if form.first_name.errors%}<p class= "error">{{form.first_name.errors}}</p>{% endif %} 
<p> <label for ="first_name"{% if form.first_name.errors %} class= "error"{%endif%}>First name</label></p> 
<p>{{form.first_name}}</p> 
</div> 
<div class ="register_div"> 
{%if form.last_name.errors%}<p class= "error">{{form.last_name.errors}}</p>{% endif %} 
<p> <label for ="last_name"{% if form.last_name.errors %} class= "error"{%endif%}>Last name</label></p> 
<p>{{form.last_name}}</p> 
</div> 
<div class ="register_div"> 
{%if form.address.errors%}<p class= "error">{{form.address.errors}}</p>{% endif %} 
<p> <label for ="address"{% if form.address.errors %} class= "error"{%endif%}>Address'</label></p> 
<p>{{form.address}}</p> 
</div> 
<div class ="register_div"> 
{%if form.email.errors%}<p class= "error">{{form.email.errors}}</p>{% endif %} 
<p> <label for ="email"{% if form.email.errors %} class= "error"{%endif%}>Email Address</label></p> 
<p>{{form.email}}</p> 
</div> 
<div class ="register_div"> 
{%if form.password.errors%}<p class= "error">{{form.password.errors}}</p>{% endif %} 
<p> <label for ="password"{% if form.password.errors %} class= "error"{%endif%}>Password</label></p> 
<p>{{form.password}}</p> 
</div> 

<div class ="register_div"> 
{%if form.password1.errors%}<p class= "error">{{form.password1.errors}}</p>{% endif %} 
<p> <label for ="password1"{% if form.password1.errors %} class= "error"{%endif%}>Verify Password</label></p> 
<p>{{form.password1}}</p> 
</div> 

<div class ="register_div"> 
{%if form.mobile.errors%}<p class= "error">{{form.mobile.errors}}</p>{% endif %} 
<p> <label for ="mobile"{% if form.mobile.errors %} class= "error"{%endif%}>Mobile</label></p> 
<p>{{form.mobile}}</p> 
</div> 
<p><input type =submit alt =register></p> 
</form> 
{% endblock %} 

models.py

from django.db import models 
class Employer(models.Model):#Employer inherits from User 
    user = models.OneToOneField(User) 
    employer_verified = models.BooleanField(default=False) 
    profile_picture = models.ImageField(upload_to='ProfilePictureDB', null=False , blank=False) 
    #profile pictures will be uploaded to ProfilePictureDB 
    hidden_values = models.CharField(max_length=200) 
    #hidden_values will contain all the attributes that the employer/contractor wants to hide 
    signature = models.OneToOneField(Signature) 
    mobile = models.IntegerField(max_length=20) 
    address = models.CharField(max_length=100) 
    def __unicode__(self): 
     return self.name 

Answer 1

戻り値はis_valid（）ブロックのインデントされていません。したがって、POSTは、フォームの有効性に関係なく、リダイレクトされます。

if request.method == "POST": 

    if form.is_valid(): 
     # .... 
     return HttpResponseRedirect('/login/') # indented 

更新に変更：

def clean_username(self): 
    username = self.cleaned_data['username'] 
    try: 
     User.objects.get(username=username) 
    except User.DoesNotExist: 
     return username 

     raise forms.ValidationError("That username already exists. Please select another") 

これは間違っています。あなたが戻った後にあなたは上げることができません。レイズはtryブロック内になければなりません。

def clean_username(self): 
    username = self.cleaned_data['username'] 
    try: 
     User.objects.get(username=username) 
     raise forms.ValidationError("That username already exists. " 
            "Please select another") 
    except User.DoesNotExist: 
     return username