bino: MyAuth , admin.py

from django import forms
from django.contrib import admin
from django.contrib.auth.forms import ReadOnlyPasswordHashField
from django.utils.crypto import get_random_string
from django.utils.encoding import smart_str
from django.utils.translation import ugettext_lazy as _
from django.utils import timezone

from myauth.models import Company, MyGroup, MyUser

class MyUserCreationForm(forms.ModelForm):
    """
    A form that creates a myuser, with no privileges, from the given username and
    password.
    """
    error_messages = {
        'duplicate_username': _("A user with that username already exists."),
        'password_mismatch': _("The two password fields didn't match."),
    }
    company = forms.ModelChoiceField(queryset=Company.objects.all())
    username = forms.RegexField(label=_("Username"), max_length=30,
        regex=r'^[\w.@+-]+$',
        help_text = _("Required. 30 characters or fewer. Letters, digits and "
                      "@/./+/-/_ only."),
        error_messages = {
            'invalid': _("This value may contain only letters, numbers and "
                         "@/./+/-/_ characters.")})
    password1 = forms.CharField(label=_("Password"),
        widget=forms.PasswordInput)
    password2 = forms.CharField(label=_("Password confirmation"),
        widget=forms.PasswordInput,
        help_text = _("Enter the same password as above, for verification."))

    class Meta:
        model = MyUser
        fields = ("username",)

    def clean_username(self):
        # Since MyUser.username is unique, this check is redundant,
        # but it sets a nicer error message than the ORM. See #13147.
        username = self.cleaned_data["username"]
        try:
            MyUser.objects.get(username=username, company=company)
        except MyUser.DoesNotExist:
            return username
        raise forms.ValidationError(self.error_messages['duplicate_username'])

    def clean_password2(self):
        password1 = self.cleaned_data.get("password1", "")
        password2 = self.cleaned_data["password2"]
        if password1 != password2:
            raise forms.ValidationError(
                self.error_messages['password_mismatch'])
        return password2

    def save(self, commit=True):
        myuser = super(MyUserCreationForm, self).save(commit=False)
        myuser.set_password(self.cleaned_data["password1"])
        if commit:
            myuser.save()
        return user

class MyUserChangeForm(forms.ModelForm):
    username = forms.RegexField(
        label=_("Username"), max_length=30, regex=r"^[\w.@+-]+$",
        help_text = _("Required. 30 characters or fewer. Letters, digits and "
                      "@/./+/-/_ only."),
        error_messages = {
            'invalid': _("This value may contain only letters, numbers and "
                         "@/./+/-/_ characters.")})
    password = ReadOnlyPasswordHashField(label=_("Password"),
        help_text=_("Raw passwords are not stored, so there is no way to see "
                    "this user's password, but you can change the password "
                    "using <a href=\"password/\">this form</a>."))
    is_active= forms.BooleanField(label=_("Is Admin?"))
    is_staff= forms.BooleanField(label=_("Is Staff?"))
    is_admin= forms.BooleanField(label=_("Is Admin?"))

    def clean_password(self):
        return self.initial["password"]

    class Meta:
        model = MyUser

    def __init__(self, *args, **kwargs):
        super(MyUserChangeForm, self).__init__(*args, **kwargs)
        f = self.fields.get('user_permissions', None)
        if f is not None:
            f.queryset = f.queryset.select_related('content_type')



class MyUserAdmin(admin.ModelAdmin):
    # The forms to add and change user instances
    form = MyUserChangeForm
    add_form = MyUserCreationForm
    list_display = ('username',)
    #list_filter = ('is_admin',)

    fieldsets = (
        (None, {'fields': ('username', 'password')}),
        ('Permissions', {'fields': ('is_admin','is_staff','is_active')}),
    )
    add_fieldsets = (
        (None, {
            'classes': ('wide',),
            'fields': ('company', 'username', 'password1', 'password2')}
        ),
    )
    search_fields = ('username',)
    ordering = ('username',)
    filter_horizontal = ()

admin.site.register(Company)
admin.site.register(MyGroup)
admin.site.register(MyUser, MyUserAdmin)