El 10/06/15 12:33, ThomasTheDjangoFan escribió:
Hi Bruno,
Abstract Base Models come close but they don't allow me to combine
multiple instances of the BaseModel in the DataHolderModel.
My goal is to store them all in one table without having to manually
add all the fields.
Any suggestions?
Am Mittwoch, 10. Juni 2015 17:49:13 UTC+2 schrieb Bruno A.:
It looks like you want a Model to inherit from multiple base
model? Multiple time from the same one, with different parameters?
I'm not sure I understood what you are trying to do, but maybe
abstract models can help you?
https://docs.djangoproject.com/en/1.8/topics/db/models/#abstract-base-classes
<https://docs.djangoproject.com/en/1.8/topics/db/models/#abstract-base-classes>
On Tuesday, 9 June 2015 22:20:19 UTC+1, ThomasTheDjangoFan wrote:
Hi guys,
now this is kind of hard for me to explain, I hope that
somebody understands what I actually want.
I am a python newbie and wonder if there is an easy solution.
/They say: DRY!!/
*My question is:
How do a define an (abstract?) class including methods and fields
and then attach it to a real mode with variants instants?*
*
The data needs to be available as realy models.* types, so I
can use it in forms.*
Hopefully this example makes it clear:
|
# I would love to keep it DRY and wonder if there is a
solution for this in python?
# NOW THIS IS TOTALLY MADE UP
# Basically I would like to be able to define a definition of
model-fields and functions
# and then be able to "attach" it to a model as various instances
classKidType(models.Model):
NAMEHOLDER =''#nameholder
NAMEHOLDER_text =models.TextField()
NAMEHOLDER_timestamp_updated
=models.DateTimeField(auto_now_add=False,auto_now=True)
defexample_function_shared_among_types():
returnstr(self.NAMEHOLDER_text +self.NAMEHOLDER_timestamp_updated)
defset_NAMEHOLDER_text(value):
self.set_NAMEHOLDER_text(value)
#
classDataHolderModel(models.Model):
# Attach the above definition with different names
# and make them accessable
@attach(KidType,KidType.NAME ='dataset1')
@attach(KidType,KidType.NAME ='dataset2')
@attach(KidType,KidType.NAME ='dataset3')
# Access the instances within the HolderModel:
data_holder =DataHolderModel()
data_holder.dataset1_text ='value1'
data_holder.set_dataset1_text('value1')
data_holder.dataset2_text ='value2'
data_holder.dataset3_text ='value3'
|
Any ideas? Can I do something like this?
I am really thankful for your tips
Thomas
If its the same data and maybe with different behaviour then proxy
models could be what you want.
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