[Answer]-Django: Product attributes and custom fields form in product page

your question is unclear to me and your even more confusing. However see this if it helps

In your models.py

from django.db import models
from model_utils import Choices

colour_choices = ('Blue', 'Green')


class Product(models.Model):
    name = models.CharField(max_length=100)

    def __unicode__(self):
        reuturn self.name


class ProductAttributes(models.Model):
    product = models.Foreignkey(Product, related_name='products')
    colour = models.CharField(choices=Choices(*colour_choices))

In your forms.py
from django import forms
from .models import Product, ProductAttributes

class ProductForm(forms.ModelForm):

    class Meta:
        model = Product


class ProdductAttributesForm(forms.ModelForm):

    class Meta:
        model = ProductAttributes

Write your views.py, urls.py and template accordingly
this method will give you a text box to enter products and drop-down for choosing color.
Hope it helped!