NOT NULL constraint failed: news_articles.author_id

from ckeditor.widgets import CKEditorWidget
from django import forms


class PostEditForm(forms.Form):
    content = forms.CharField(widget=CKEditorWidget, label='')

<form ...>
    {{ post_form.media }}
    ...
</form>

def view(request):

    post_form= PostEditForm(request.POST)

    context = {
        "post_form" : post_form,
    }
    return render(request, 'template.html', context)

class ProfileForm(forms.ModelForm):
    class Meta:
        model = Profile
        fields = '__all__'

form = ProfileForm(request.POST, request.FILES, instance=profile)