CODEWITHSUNDEEP
pythondjango
mheavers
mheavers

Reputation: 30158

dynamically reference property of self in python

I currently have a bunch of language checks in place in a python (django) function:

def __get__(self, instance, owner):

  if translation.get_language() == 'fr':
    trans_field = getattr(instance, self.fr_field)
  else:
    return getattr(instance, self.en_field)

What I want to do is run this in a loop:

for language in languages:
  if translation.get_language() == language:
    return getattr(instance, self.[language]_field)
  else:
    return getattr(instance, self.en_field)

How do I do this? Obviously the self.[language]_field is pseudocode

Upvotes: 0

Views: 90

Answers (2)

Moses Koledoye
Moses Koledoye

Reputation: 78556

Use getattr a second time:

return getattr(instance, gettattr(self, '{}_field'.format(language))

Upvotes: 2

blues
blues

Reputation: 5185

You already have the solution there. Use getattr getattr(instance, getattr(self, language + '_field'))

Upvotes: 2

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