Django request with user criteria - django

Question

I would like to get some help about my future process. I would like that users could create his own django request and then get the result.
Up to now, I created django requests in my script but there are static requests :
request1 = Test.objects.all()
or
query_lastname_ID = request.GET.get('q1ID')
query_firstname_ID = request.GET.get('q1bisID')
query_naissance_ID = request.GET.get('q1terID')
if query_firstname_ID and query_lastname_ID and query_naissance_ID :
query_ID_list = Individu.objects.filter(
Nom__icontains=query_lastname_ID,
Prenom__icontains=query_firstname_ID,
VilleNaissance__icontains=query_naissance_ID)
if len(query_ID_list) != 0 :
messages.success(request, 'Miracle .. Vous avez un résultat !')
else :
messages.error(request, "Oh non .. Vous n'avez aucun résultat !")
All of these requests are static.
Now I would like to let the choice to the user between criteria or mathematic operator.
I won't write table fields in my request but the user could have the choice to get what he wants :
one field
two fields
x fields
the mathematic operator (=, >, <, not egal, ...)
comparison between fields
...
User could get a result thanks to a dynamic request. He could create himself Django request.
Is it possible ? I don't find example or documentations about this kind of process :/

Answer 1

You can try create filter as dict, for example:
map_fields_get = {
'Nom': 'q1ID', 'Prenom': 'q1bisID', 'VilleNaissance': 'q1terID'
}
condition_param = 'YOUR_GET_NAME_FOR_CONDITION'
condition_list = ['icontains', 'iexact', 'gt', 'lt']
condition = request.GET.get('condition_param', 'icontains')
if condition not in condition_list:
# add your logic set default or raise
condition = condition_list[0]
qs_f = {}
for get_f, f in map_fields_get.items():
get_val = request.GET.get(get_f, None)
if get_val:
qs_f_key = '%s__%s' % (f, condition)
qs_f[qs_f_key] = get_val
if qs_f:
query_ID_list = Individu.objects.filter(**qs_f)