django.core.exceptions.FieldError: Unknown field(s) (group) specified for Friend が解決できません。

Question

djangoのチュートリアルで簡易的なsnsアプリを作っているのですが、エラー解決で詰まったので質問させて頂きます。

from django import forms
from.models import Message,Group,Friend,Good
from django.contrib.auth.models import User

class MessageForm(forms.ModelForm):
    class Meta:
        model = Message
        fields = ['owner','group','content']

class GroupForm(forms.ModelForm):
    class Meta:
        model = Group
        fields = ['owner', 'title']

class FriendForm(forms.ModelForm):
    class Meta:
        model = Friend
        fields = ['owner','user','group']

class GoodForm(forms.ModelForm):
    class Meta:
        model = Good
        fields = ['owner','message']

class SearchForm(forms.Form):
    serch = forms.CharField(max_length=100)

class GroupCheckForm(forms.Form):
    def __init__(self, user, *args, **kwargs):
        super(GroupCheckForm, self).__init__(*args, **kwargs)
        public = User.objects.filter(username='public').first()
        self.fields['groups'] = forms.MultipleChoiceField(
            choices=[(item.title, item.title) for item in \
                    Group.objects.filter(owner__in=[user,public])],
            widget = forms.CheckboxSelectMultiple(),
        )

class GroupSelectForm(forms.Form):
    def __init__(self, user, *args, **kwargs):
        super(GroupSelectForm, self).__init__(*args, **kwargs)
        self.fields['groups'] = forms.ChoiceField(
            choices=[('-','-')] + [(item.title, item.title) \
                    for item in Group.objects.filter(owner=user)],
        )

class FriendsForm(forms.Form):
    def __init__(self, user, friends=[], vals=[], *args, **kwargs):
        super(FriendsForm, self).__init__(*args, **kwargs)
        self.fields['friends'] = forms.MultipleChoiceField(
            choices = [(item.user, item.user) for item in friends],
            widget = forms.CheckboxSelectMultiple(),
            initial = vals
        )

class CreateGroupForm(forms.Form):
    group_name = forms.CharField(max_length=50)

class PostForm(forms.Form):
    content = forms.CharField(max_length=500, \
            widget = forms.Textarea)
    def __init__(self, user,*args, **kwargs):
        super(PostForm, self).__init__(*args, **kwargs)
        public = User.objects.filter(username = 'public').first()
        self.fields['groups'] = forms.ChoiceField(
            choices=[('-','-')] + [(item.title, item.title) \
            for item in Group.objects. \
            filter(owner__in = [user,public])],
        )

これでrunserverすると

django.core.exceptions.FieldError: Unknown field(s) (group) specified for Friend

FriendForm内に'group'の項目が入っているのですが見つけられないと続いてしまいます。
解決策お教えいただきたいです。

Answer 1

groupではなくてgroupsで定義しているのではないでしょうか？？