Thanks Daniel and Bruno, your tips were gr8. It helped me out a lot. I am a newbie in python as well as Django, and I m trying to learn them ASAP. I had to finish some work quickly and so had pushed the question here.
Thanks anyways -Saurav On Feb 6, 2:24 pm, bruno desthuilliers <bruno.desthuilli...@gmail.com> wrote: > On 6 fév, 08:01,Saurav<prio...@gmail.com> wrote: > > > Hi, > > > I want to know if its possible to convert a string object into class > > object. > > I assume you mean "retrieve an existing class object by it's name". > > (snip) > > >http://dpaste.com/117323/ > > > at line no 40, > > f = model_name.__name__+"Form"(instance=a) > > Won't work - str is not a callable type. > > > if you notice, I m trying to add "Form" to the > > model_name for creating an instance of the class CompanyForm, here is > > my problem, as a result of the addition it becomes string object > > Given that you are concatening two strings, you could hardly expect > anything else than a string. > > Ok - first point, at line 33, you have: > > # nb : until this point 'model_name' is a str > model_name = get_model('dashboard',model_name) > > get_model returns a class object (a Model subclass FWIW). Naming it > "model_name" is a *very* poor choice. Name it 'model', or 'model_cls', > or 'model_object', but please leave the original model_name alone. > > Now wrt/ your question: you can retrieve an object's attribute by name > using the getattr(obj, name) function. Since module are objects and > class objects are (usually) attributes of their module, if module > "somemodule" defines class "SomeClass", you can do: > > import somemodule > someclass = getattr(somemodule, "SomeClass") > > Also, if the object to retrieve by name actually lives in the current > namespace, you can also retrieve it using a dict returned by globals() > or locals(). In your case, since CompanyForm is defined in the same > module, this is what you want. > > class Foo(object): > pass > > def bar(): > cls = globals()['Foo'] > > > and > > hence im getting the error 'str' object is not callable' > > Obviously, yes. > > > How can I overcome this problem ?? > > cf above. > > Also, taking time to learn Python (and eventually asking Python- > related question in a Python-related newsgroup - like, for example, > comp.lang.python) might be a good idea... > > HTH --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
