show parent in child screen django admin python

Question

I'm new to python django and we decide to develop an application with this framework for developing the admin we faced some issues here's a snippet of my code the models is like :

class Category(models.Model):
   name = models.CharField(max_length=60)
   description = models.CharField(max_length=100)

class Product(models.Model):
   name = models.CharField(max_length=60)
   description = models.CharField(max_length=100)
   category = models.ForeignKey(Category)

And in the corresponding tables in database table Product has a foreign-key reference to Category (category_id)

In admin.py file I have :

 class ProductAdmin(admin.ModelAdmin):
    fields = ['name','description'];

 class CategoryAdmin(admin.ModelAdmin):
     fieldsets = [
             (None,{'fields':['name']}),
             ('Description',{'fields' : ['description']})
             ]
   inlines = [ProductInline] 

When I need to insert a product into the database via the django admin panel there is no field to select the category and I received the following message :

"Column 'category_id' cannot be null"

where am I making mistake? how do I edit my code so that in admin panel it provides a dropdown or something to select its parent(In this case category)

Answer 1

Get rid of the "fields" option in your ProductAdmin. You might be confusing "fields" with "list_display"? Try

class ProductAdmin(admin.ModelAdmin):
    list_display = ['name','description']