foerderbarometer/input/admin.py

from django.contrib import admin

# Register your models here.
from .models import Project, HonoraryCertificate, Library, IFG #, ELitStip

@admin.register(Project)
class ProjectAdmin(admin.ModelAdmin):
    fields = ('pid',)
    readonly_fields = ('pid',)

admin.site.register([HonoraryCertificate,
                     Library,
                     IFG,
                     ])