Hi all,
I want to create my own "field" type for a model, this essentially
will be a relationship to another model via a generic link model
(using GenericForeignKey etc).
As en example I basically want to do the following in models.py:
class Pizza(models.Model):
toppings = IngredientsField()
Which can then be reused in another app sandwiches/models.py as:
class Sandwich(models.Model)
filling = IngredientsField()
Where I use a IngredientsField() field type which then controls the
links as a separate set of models Ingredients and IngredientItems.
Now I have created in fields.py:
class IngredientsField(CharField):
def __init__(self, *args, **kwargs):
......
However I get an "Unknown column 'pizza_pizza.toppings' in 'field
list'" error - BUT I don't want to add it as a column in toppings as I
want it to be linked via the link table/model IngredientItems.
Eventually what I want to achieve is while using the admin system for
certain models that you manage there will be a text box where you can
enter ingredients into a TextField in the admin comma delimited
"Cheese, Ham" and then the model take care of the rest.
Hopefully I'm pretty close, any ideas anyone?
Thanks in advance,
Nick
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