filter foreignkey field in django admin

Question

I have these models:

class Entity(models.Model):
       name=models.CharField(max_length=100)
      
class Theme(models.Model):
   name=models.CharField(max_l         


        

Answer 1

In Django 3 it is easy :

class CompanyAdmin(admin.ModelAdmin):
    list_display = ('name','theme')
    list_filter = ('theme__name',)

admin.site.register(Company,CompanyAdmin)

This will show you a filter on the right of your screen with the list of your theme's name.