poulpe/equipment/admin.py

from django.contrib import admin
from django import forms

from .models import Equipment, EquipmentRemark
from .fields import IdField, IdWidget

class IdForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        print("looooooooooooooooooooool")
        if 'min_value' in kwargs:
            kwargs.pop('min_value')
        super(IdForm, self).__init__(*args, **kwargs)

        for field in self.instance._meta.fields:
            if isinstance(field, IdField):
                self.fields[field.name].choices = list(range(1, 12))
                self.fields[field.name].widget = IdWidget()
                print(self.fields[field.name].choices)
                print(self.fields.values())


class EquipmentRemarkExtraInline(admin.TabularInline):
    model = EquipmentRemark
    extra = 0
    form = IdForm


class EquipmentAdmin(admin.ModelAdmin):
    list_display = ['name', 'stock']
    ordering = ['name']
    inlines = [EquipmentRemarkExtraInline]


admin.site.register(Equipment, EquipmentAdmin)