Django : form is not saved into my database -

altough form send offer correctly displayed , have no error when submitting offers, not saved in database. know checking admin site, no objects saved. on other hand, have written code registration , users saved in database.

i suspect foreignkey relation between 2 models culprit.

models.py

from django.db import models  class user(models.model):  username = models.charfield(max_length=30, unique=true, blank=false) password1 = models.charfield(max_length=40, blank=false) password2 = models.charfield(max_length=40, blank=false) mail = models.emailfield(unique=true, blank=false) birthday = models.datefield(blank=false) date = models.datetimefield(auto_now_add=true, auto_now=false, verbose_name="date d'inscription") def __str__(self):     return self.username   class offer(models.model):  publisher = models.foreignkey(user) content = models.textfield() date = models.datetimefield(auto_now_add=true, auto_now=false,    verbose_name="date de parution")  def __str__(self):     return self.publisher.username 

forms.py

from django import forms django.contrib import admin django.contrib.auth.hashers import make_password, check_password django.utils.translation import ugettext_lazy _ myuser.models import user, offer  class usercreationform(forms.modelform):     class meta:         model = user         widgets = {         'password1' : forms.passwordinput(),         'password2' : forms.passwordinput(),         }         fields = ("username", "password1", "password2", "mail")      def clean_password2(self):         # check 2 password entries match         password1 = self.cleaned_data.get("password1")         password2 = self.cleaned_data.get("password2")         if password1 , password2 , password1 != password2:             raise forms.validationerror("les mots de passes ne correspondent pas")         return password2      def save(self, commit=true):         # save provided password in hashed format         user = super(usercreationform, self).save(commit=false)         user.password1 = make_password(self.cleaned_data["password1"])         user.password2 = make_password(self.cleaned_data["password2"])         if commit:             user.save()         return user  class loginform(forms.form):     username = forms.charfield(label="nom d'utilisateur")     password = forms.charfield(label="mot de passe",                                 widget = forms.passwordinput)     def clean(self):         cleaned_data = super(loginform, self).clean()         username = cleaned_data.get('username')         password = cleaned_data.get('password')         user = user.objects.get(username=username)         if check_password(password, user.password1):             return cleaned_data         else:             raise forms.validationerror("le nom d'utilisateur et le mot de passe ne correspondent pas")  class sendofferform(forms.modelform):     class meta:         model = offer         fields = ('content',) 

views.py

from django.shortcuts import render django.http import httpresponseredirect, httpresponse django.core.exceptions import objectdoesnotexist  myuser.models import user, offer myuser.forms import usercreationform, loginform, sendofferform  def get_logged_user_from_request(request):     if 'logged_user_id' in request.session:         logged_user_id = request.session['logged_user_id']         return user.objects.get(id=logged_user_id)     else:         return none  def register(request):     registered = false     if request.method == 'post':         user_form = usercreationform(data=request.post)         if user_form.is_valid():             user = user_form.save()             registered = true         else:             print(user_form.errors)     else:         user_form = usercreationform()     return render(request,            'myuser/create_account.html',            {'user_form': user_form, 'registered': registered} )  def login(request):     if request.method=='post':         form = loginform(request.post)         try:             if form.is_valid():                user = user.objects.get(username=request.post.get('username'))                 logged_user = user.objects.get(username=request.post.get('username'))                request.session['logged_user_id'] = logged_user.id                return httpresponseredirect('/')             else:                 error = "le nom d'utilisateur et le mot de passe ne correspondent pas"                 return httpresponse("invalid login details supplied.")         except user.doesnotexist:             return httpresponse("invalid login details supplied.")     else:         form = loginform     return render(request, 'myuser/mylogin.html', locals())    def send_offer(request):     sent = false     logged_user = get_logged_user_from_request(request)     if logged_user:         if request.method == 'post':             try:                 offerform = sendofferform(request.post, instance=logged_user)                 if offerform.is_valid():                             sent = true                     offerform.save()                 else:                     print(offerform.errors)             except:                 return httpresponse("drapeau except")         else:             offerform = sendofferform(instance=logged_user)     else:         return httpresponse("vous n'êtes pas connecté")     return render(request, 'myuser/send_offer.html', locals()) 

urls.py

from django.conf.urls import patterns, url, include django.views.generic import templateview  urlpatterns = patterns('myuser.views',     url(r'^inscription/$', 'register',  name='create_account'),     url(r'^connexion/$', 'login', name='login'),     url(r'^envoyer_une_offre$', 'send_offer', name='send_offer'),     ) 

send_offer.html

{% extends "base.html" %} {% block content %}  <h1> offer </h1>  {% if not sent %} <p> write offer <p/>      <form action="{% url "send_offer" %}" method='post' class='sendofferform'>         {{ form.errors }}         {{ form.non_field_errors }}         {% csrf_token %}         {{ offerform.as_p }}         <input type="submit" value="submit" />     </form> {% else %} offer published <a href="/poster_une_offre">publish offer?</a><br />  <a href="/">get homepage</a><br /> {% endif %} {% endblock %} 

admin.py

from django.contrib import admin myuser.models import user, offer#, message  class useradmin(admin.modeladmin):     list_display = ('id', 'username', 'status', 'college', 'apercu_description')     list_filter = ('id', 'username', 'birthday')     date_hierarchy = 'date'     ordering = ('date', )     search_fields = ('username', 'description')      def apercu_description(self, user):          text = user.description[0:40]         if len(user.description) > 40:             return '%s' % text         else:             return text  class offeradmin(admin.modeladmin):     list_display = ('id', 'publisher', 'apercu_offre')     list_filter = ('id', )     date_hierarchy = 'date'     ordering = ('date', )     search_fields = ('publisher',)      def apercu_offre(self, offer):                 text = offer.content[0:40]         if len(offer.content) > 40:             return '%s' % text         else:             return text  admin.site.register(user, useradmin) admin.site.register(offer, offeradmin) 

all of other function works (register , login) , register() function correctly saves user send_offer() function, similar register function doesn't work , after searching on internet hours, still have no idea why offers not saved.

but when try add offer in admin site, seems work.

besides, tried save offer in python manage.py shell :

>>> offer.publisher = "a" >>> offer.content = "lalalala" >>> offer.save() traceback (most recent call last):   file "/usr/local/lib/python3.4/dist-packages/django/core/management/commands/shell.py", line 69, in handle     self.run_shell(shell=options['interface'])   file "/usr/local/lib/python3.4/dist-packages/django/core/management/commands/shell.py", line 61, in run_shell     raise importerror importerror  during handling of above exception, exception occurred:  traceback (most recent call last):   file "/usr/lib/python3.4/code.py", line 90, in runcode     exec(code, self.locals)   file "<console>", line 1, in <module> typeerror: save() missing 1 required positional argument: 'self' 

edit : solution add these lines :

    if offerform.is_valid():                 sent = true         offer = offerform.save(commit=false)         offer.publisher = user.objects.get(id=logged_user.id)         offer.save() 

please, note logged_user function, described in view.py.

on modelform if don't pass object when instantiated create new object in database of specified type. in case on sendofferform have specified offer. if pass existing object has specified type in case offer.

it looks trying automatically fill publisher field logged in user. in order need manually set publisher field instance of user.

if intend form create new offer in database this

offerform = sendofferform(request.post) 

if trying update current offer need pass instance object form

offerform = sendofferform(request.post, instance=someoffer) 

to manually add user field call save on form commit=false return offer object without saving db. @ point have chance customize data in object , save.

offer = offerform.save(commit=false) offer.publisher = request.user.id offer.save() 

all of explained in more detail in django documentation modelform documentation