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Django combine 2 QuerySets


By : user6096512
Date : September 14 2020, 09:00 PM
wish of those help The docs for django-hitcount describe here how to add a field to one of your models (Post) that will relate back to the HitCount model.
After you add a hit_count attribute to your Post model that relates by following the example in the docs, you can order and/or filter by hits as well as post dates in your query. You query would look something like this:
code :
top_posts = Post.objects.order_by("hit_count__hits").filter(Q(created_at__lte=s_date) | Q(created_at__gte=e_date))


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How to combine two or more querysets in a Django view?


By : iqbal
Date : March 29 2020, 07:55 AM
will be helpful for those in need Concatenating the querysets into a list is the simplest approach. If the database will be hit for all querysets anyway (e.g. because the result needs to be sorted), this won't add further cost.
code :
from itertools import chain
result_list = list(chain(page_list, article_list, post_list))
result_list = sorted(
    chain(page_list, article_list, post_list),
    key=lambda instance: instance.date_created)
from operator import attrgetter
result_list = sorted(
    chain(page_list, article_list, post_list),
    key=attrgetter('date_created'))

Django Combine a Variable Number of QuerySets


By : jsousa
Date : March 29 2020, 07:55 AM
hope this fix your issue Is there a way to concatenate a unknown number of querysets into a list? , Slightly unorthodox, but you could use recursion. So in your example:
code :
def recursive_search(tags, results_queryset):
    if len(tags) > 0:
        result_qs = result_queryset.filter(tags_name=tags[0])
        if result_queryset.exists():
            return filter_recursion(tags[1:],result_queryset)
        else:
            return None
    return result_queryset

tags = ["comedy", "80s", "action", "thriller"]  # This can be variable
result_queryset = Item.objects.filter(brands__in=brands) # Could be Item.objects.all()
print recursive_search(tags, result_queryset)
list = []
for item in itertools.chain(q1, q2):
    list.append(item)
# list of tags = ['comedy','80s']
qs = Item.objects.all( Q(brand__iexact="brand name") | Q(tags__name__in=[tag for tag in list_of_tags]) )

Django combine multiple querysets (same model)


By : Roger Critchlow
Date : March 29 2020, 07:55 AM
Hope that helps I have list of querysets (all for same model): , You can use Q objects:
code :
from django.db.models import Q

results = Entry.objects.all()
q = Q()
for city in city_list:
    q = q | Q(address__city__icontains=city)
results.filter(q)

Combine 2 Django Querysets


By : Don Lipps
Date : March 29 2020, 07:55 AM
Hope that helps Not near an interpreter but, you're merging two objects and not two querysets. Try replacing get with filter. from random import randint
code :
from sentences.models import Sentence

sentence_number = 3

first_pk = Sentence.objects.first().pk

last_pk = Sentence.objects.last().pk

for i in range(sentence_number):

    next_pk = randint(first_pk, last_pk)
    sentence_qs = Sentence.objects.filter(pk=next_pk)
    type(sentence_qs)

    if i > 1:
       sentence_qs = sentence_qs | Sentence.objects.filter(pk=next_pk)

Django REST Framework: How to combine two querysets?


By : Double E
Date : March 29 2020, 07:55 AM
Hope this helps You have situation described here. It is possible to implement this API:
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