Is it possible to inherit existing model without affect the default model? [Solved]

Question

Hello,
I try to inherit the existing model, define some new fields and redefine the state of the default model also, but i do not want this new fields affect the default model (keeping the behaviour of the default model).
Is it possible to achieve that (besides copy the default model)?
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Problem solved:
Use 'ir.action.act_window.view' in the action view definition and utilize a method named 'fields_view_get', you can override this method to modify the

YOPI ANGI · Answer

Hello Ivan,
Thanks for the quick response :).
Besides of copy the default model, is there another way to achieve that?
I inherit a sale.order model, and redefine the state fields. When i load/open the web, this model is already updated with the new state. (what i mean is the default state of sale.order model is not affect by the inherit model -- is it possible?)

Ivan · Answer

Check out this documentation page on inheritence [1] . There are various ways to inherit an object, depending on how do you want to "use" the field in the other class from the new class, that is provided by OpenERP.
For your purpose, maybe inheritance by prototyping is the most appropriate.

[1] https://doc.odoo.com/v6.0/developer/2_5_Objects_Fields_Methods/object_inherit.html/

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