python - Constructing Django filter queries dynamically with args and kwargs

Question

I'm constructing some Django filter queries dynamically, using this example:

kwargs = { 'deleted_datetime__isnull': True }
args = ( Q( title__icontains = 'Foo' ) | Q( title__icontains = 'Bar' ) )
entries = Entry.objects.filter( *args, **kwargs )

I'm just not sure how to construct the entry for args. Say I have this array:

strings = ['Foo', 'Bar']

How do I get from there to:

args = ( Q( title__icontains = 'Foo' ) | Q( title__icontains = 'Bar' ) 

The closest I can get is:

for s in strings:
    q_construct = Q( title__icontains = %s) % s
    args.append(s)

But I don't know how to set up the | condition.

Answer 1

you have list of Q class objects,

args_list = [Q1,Q2,Q3]   # Q1 = Q(title__icontains='Foo') or Q1 = Q(**{'title':'value'})  
args = Q()  #defining args as empty Q class object to handle empty args_list
for each_args in args_list :
    args = args | each_args

query_set= query_set.filter(*(args,) ) # will excute, query_set.filter(Q1 | Q2 | Q3)
# comma , in last after args is mandatory to pass as args here