How to share variables between two django class?

Question

I have two django class A and B. Both in the same django App folder（But they are in different files）. Now I want class B can access to class A variable.

Class A:
 def generate(self):
   url = "i want access to this variable from Class B"


Class B:
 def get(self):
  # get url variable and do something

What should I do to implement it？

Shang Wang · Accepted Answer · 2016-01-26 18:56:12Z

3

You should first instantiate an A instance, then return the url from generate function, then feed the return value to get function in B:

Class A:
 def generate(self):
   url = "i want access to this variable from Class B"
   return url


Class B:
 def get(self, url):
  # get url variable and do something

# here's how you use it
a = A()
b = B()
b.get(a.generate())

See if that makes sense.

Edit:

If your generate function is set to stone, you could also elevate the url as class variable:

Class A:
 def generate(self):
   url = "i want access to this variable from Class B"
   self.foo_url = url

a = A()
b = B()
# call generate to get the foo_url as property of object a
a.generate()
b.get(a.foo_url)

edited Jan 26, 2016 at 18:56

answered Jan 26, 2016 at 18:48

Shang Wang

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1 Comment

Zhe Xiao Over a year ago

In my case, That function cannot return data (There are a bunch of class are need to access it). So do you have other way to access to the variable?

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