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paulocheque / django-dynamic-fixture

A complete library to create dynamic model instances for testing purposes.
http://django-dynamic-fixture.readthedocs.io/
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Set max number of instances per model_class? #33

Closed vishen closed 4 years ago

vishen commented 11 years ago

I need the ability to set the maximum number of instances per model_class, is there a way to do this already?

The the django project I'm using this for is large and complex with lots of relationships every where and I cannot find an easy way to minimise the creating of many instances per model class.

paulocheque commented 11 years ago

Hi there.

DDF does not have this feature (yet?), but what about to reuse some created instance? Maybe you can create a variable in a base test class that store a created instance. What do you think?

vishen commented 11 years ago

I was doing that, but it was becoming very cumbersome as our models are quite extensive and a lot share similar fields, so I was having to keep track of many variables and add them in as required which was just a pain. I'm not sure if this would be a problem for anyone else though because our models are a mess and not structured very well. I'd be happy to try and implement something if it would be useful for anyone else other than me?

paulocheque commented 4 years ago

I had an idea now. You can use the teach method (old shelve/use_library) to use always the same model instance. In this way, DDF won't create a new instance.

For example:

In conftest.py

from ddf import teach, G

limited_instance = G(MyLimitedModel)
teach(MyModel, my_fk_I_want_to_limit_creation=limited_instance)

Then, in your tests:

G(MyModel)

it won't create its FKs...