Re: Is it possible to extend the model in another application without explicitly changing firs-one?

Hi again,

According to what i have understood the problem till now. You are trying to implement it the wrong way. This is not python, Everything is already built using classes, you are already overriding a class, then extending an overriden class seems complicated. Modularity and loose coupling can be achieved through a completely different way here. Be it clear, a model creates a table in the database. Why are you trying to create the same table again and again with more or less attributes ? 

Try implementing manytomany fields, foreign =key etc. This may solve your problem .

Regards

Naveen Arora

On Friday, 28 February 2020 18:33:20 UTC+5:30, Ol P wrote:

What are you trying to achieve with this implementation?

I want to achieve modularly and loose coupling. Separate responsibility in other words.

and What do you call a extended model ?

By extended model, I mean pat of an existing model, that implemented in one place (in out example app-A) but extended, altered or modified in another please (in out example app-B)

Instance of model1 is accesible in app2, this already means you got your model1 in app2.

Yes, but not the model itself.

On Friday, February 28, 2020 at 2:53:45 PM UTC+2, Naveen Arora wrote:

What are you trying to achieve with this implementation?

and What do you call a extended model ?

Instance of model1 is accesible in app2, this already means you got your model1 in app2.

Curious.

On Friday, 28 February 2020 18:20:12 UTC+5:30, Ol P wrote:

But how to add fields to it?

Where to put what:

from appA import model1


class ExtendedModel1(?):
    ?

    new_field = models.CharFiled()

    class Meta:
       ?

On Friday, February 28, 2020 at 2:23:17 PM UTC+2, Naveen Arora wrote:

Clearly Possible, 

Simply import the model first using appname.models. Hope it helps:)

You can use this as

from appA import model1

in app2

On Thursday, 27 February 2020 22:04:12 UTC+5:30, Ol P wrote:

Imagen we have app-A and app-B with model-A and model-B accordingly.

And we want to extend model-A in app-B.

What should be written in model-B to implement it?

In other words, is it possible to implement the same-table extension?

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