CODEWITHSUNDEEP
pythondjango
vellattukudy
vellattukudy

Reputation: 789

How to create a function is views.py so that all the functions inside the views.py can use it

Hi I have the following definition 

if GroupProfile.objects.filter(id=self.request.session['ACL_gid'], permissions__codename='view_page'):
    context['can_view_page'] = 1
else:
    context['can_view_page'] = 0
return context

I am using this part of code in many of my views. How can I define it once so that I dont need to use it every time?

Upvotes: 0

Views: 3055

Answers (3)

Dharmik
Dharmik

Reputation: 445

You can simply write function in any common file like,

def your_func(args):
 #do your work

and simply import it wherever you want to use it like a normal python function. eg. from common import your_func

Upvotes: 4

Burhan Khalid
Burhan Khalid

Reputation: 174718

You need to create a custom template context processor, and then add it to your TEMPLATES setting. The context provider is something very simple:

from .models import GroupProfile

def view_page(request):
    if GroupProfile.objects.filter(id=self.request.session['ACL_gid'],
                                   permissions__codename='view_page').count():
       return {'can_view_page': 1}
    return {'can_view_page': 0 }

Save this file somewhere; ideally inside an app (the same place where you have the models.py file) and then add it to your TEMPLATES setting, make sure you don't override the defaults.

Once you set this up, then all your templates will have a {{ can_view_page }} variable; and you don't have to keep repeating code in your views.

Upvotes: 0

Andrii Rusanov
Andrii Rusanov

Reputation: 4606

a) You can create your a method inside your model or in Modelmanager(I think it would be most elegant solution):

class MyManager(models.Manager):
    def can_view_page(self, acl_gid, perm_code = 'view_page'):
        return 1 if self.filter(id=acl_gid, permissions__codename=perm_code) else 0


class GroupProfile(models.Model):
    .....
    objects = MyManager()

b) You can create just a function in something like utils.py. c) You can create a Mixin class and put there this function. You can always do there something like:

class MyMixin(object):
    def get_context_data(self, **kwargs):
        context = super(MyMixin, self).get_context_data(**kwargs)
        context['can_view_page'] = 1 GroupProfile.objects.filter(id=self.request.session['ACL_gid'], permissions__codename='view_page') else 0
        return context

But I'm not a big fan of this approach since it overrides instead of extend - it isn't really transparent in my opinion.

d) You can create a decorator!) But I don't think it is very right case to use it.

Upvotes: 0

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