How would you inherit from and override the django model classes to create a listOfStringsField?

I want to create a new type of field for django models that is basically a ListOfStrings. So in your model code you would have the following: models.py: ``` from django.db import models class ListOfStringsField(???): ??? class myDjangoModelClass(): myName = models.CharField(max_length=64) myFriends = ListOfStringsField() # ``` other.py: ``` myclass = myDjangoModelClass() myclass.myName = "bob" myclass.myFriends = ["me", "myself", "and I"] myclass.save() id = myclass.id loadedmyclass = myDjangoModelClass.objects.filter(id__exact=id) myFriendsList = loadedclass.myFriends # myFriendsList is a list and should equal ["me", "myself", "and I"] ``` How would you go about writing this field type, with the following stipulations? - We don't want to do create a field which just crams all the strings together and separates them with a token in one field like this. It is a good solution in some cases, but we want to keep the string data normalized so tools other than django can query the data. - The field should automatically create any secondary tables needed to store the string data. - The secondary table should ideally have only one copy of each unique string. This is optional, but would be nice to have. Looking in the Django code it looks like I would want to do something similar to what ForeignKey is doing, but the documentation is sparse. This leads to the following questions: - Can this be done? - Has it been done (and if so where)? - Is there any documentation on Django about how to extend and override their model classes, specifically their relationship classes? I have not seen a lot of documentation on that aspect of their code, but there is this. This is comes from this question.