Tags down


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))

Share : facebook icon twitter icon

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),

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)
            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 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)

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)

    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:
Related Posts Related Posts :
  • Read a Django UploadedFile into a pandas DataFrame
  • Django Treebread admin AttributeError - 'Page' object has no attribute 'page_ptr_id'
  • Bad request (400) (unsupported syscall) when trying to reach container in Google Cloud Run
  • How to add 'Delete' button to User Profile template in Django app so the user can delete his/her profile from the app?
  • Django AttributeError: 'str' object has no attribute 'get'
  • Django send bulk emails
  • Null data in result of running DRF serializer
  • Plain structure from OneToOne-related models (Django Rest Framework)
  • Preview custom 500 error page in Wagtail?
  • 'QuerySet' object has no attribute 'year' while using timesince
  • Why MyPage._meta.get_field("title").verbose_name changes all the titles' labe in Wagtail?
  • Is http stream actually implemented by http chunk?
  • Django 3.0 ValueError
  • Is there any easy way to get all the inputs in one line?
  • Are POST requests cached in Django?
  • 'django.db.backends.postgresql_psycopg2' not working in Django 3.0
  • Finding overlapping dates in a specific range in Django
  • Can't uninstall Python 2.7.16 on Mac
  • Multiple slugs in href
  • How to Modify the default Django user table
  • What is pgettext_lazy in Django?
  • is there any Switch which can disable/enable for any changes in django model objects?
  • Django multiple annotate slows down the query
  • Creating a model with two optional, but one mandatory foreign key
  • How to pass a request.user to a model Manager?
  • How do i add other fields on Abstract User
  • Where do you keep your media folder in a Django project?
  • How to handle an else function in a nested if statement
  • Error module 'tablib.formats._xls' has no attribute 'title'
  • insertion in nested serializer in DRF
  • the user login view in django is not working properly?
  • How to store Global variable in Django view
  • Django: remove Decimal prefix from queryset annotated field, when requesting values
  • Speeding up a Django query
  • How to rename GraphQL type field autogenerated from Django model?
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk