Answer by Kai - Kazuya Ito for How to combine multiple querysets in Django?
You can use "|"(bitwise or) to combine the querysets of the same model as shown below:# "store/views.py"from .models import Foodfrom django.http import HttpResponsedef test(request): # ↓ Bitwise or...
View ArticleAnswer by Daniel Diaz for How to combine multiple querysets in Django?
The best option is to use the Django built-in methods:# Union methodresult_list = page_list.union(article_list, post_list)That will return the union of all the objects in those querysets.If you want to...
View ArticleAnswer by Vignesh Sk for How to combine multiple querysets in Django?
You can use Union:qs = qs1.union(qs2, qs3)But if you want to apply order_by on the foreign models of the combined queryset... then you need to Select them beforehand this way... otherwise it won't...
View ArticleAnswer by Satyam Faujdar for How to combine multiple querysets in Django?
This will do the work without using any other libraries:result_list = page_list | article_list | post_list
View ArticleAnswer by Devang Padhiyar for How to combine multiple querysets in Django?
This can be achieved by two ways either.1st way to do thisUse union operator for queryset | to take union of two queryset. If both queryset belongs to same model / single model than it is possible to...
View ArticleAnswer by Petr Dvořáček for How to combine multiple querysets in Django?
This recursive function concatenates array of querysets into one queryset. def merge_query(ar): if len(ar) ==0: return [ar] while len(ar)>1: tmp=ar[0] | ar[1] ar[0]=tmp ar.pop(1) return ar
View ArticleAnswer by chidimo for How to combine multiple querysets in Django?
Requirements:Django==2.0.2, django-querysetsequence==0.8In case you want to combine querysets and still come out with a QuerySet, you might want to check out django-queryset-sequence.But one note about...
View ArticleAnswer by Udi for How to combine multiple querysets in Django?
Related, for mixing querysets from the same model, or for similar fields from a few models, starting with Django 1.11 a QuerySet.union() method is also available:union()union(*other_qs, all=False)New...
View ArticleAnswer by ray6080 for How to combine multiple querysets in Django?
DATE_FIELD_MAPPING = { Model1: 'date', Model2: 'pubdate',}def my_key_func(obj): return getattr(obj, DATE_FIELD_MAPPING[type(obj)])And then sorted(chain(Model1.objects.all(), Model2.objects.all()),...
View ArticleAnswer by vutran for How to combine multiple querysets in Django?
In case you want to chain a lot of querysets, try this:from itertools import chainresult = list(chain(*docs))where: docs is a list of querysets
View ArticleAnswer by bryan for How to combine multiple querysets in Django?
Try this:matches = pages | articles | postsIt retains all the functions of the querysets which is nice if you want to order_by or similar.Please note: this doesn't work on querysets from two different...
View ArticleAnswer by Jiaaro for How to combine multiple querysets in Django?
Here's an idea... just pull down one full page of results from each of the three and then throw out the 20 least useful ones... this eliminates the large querysets and that way you only sacrifice a...
View ArticleAnswer by akaihola for How to combine multiple querysets in Django?
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.from...
View ArticleAnswer by akaihola for How to combine multiple querysets in Django?
You can use the QuerySetChain class below. When using it with Django's paginator, it should only hit the database with COUNT(*) queries for all querysets and SELECT() queries only for those querysets...
View ArticleAnswer by Carl Meyer for How to combine multiple querysets in Django?
The big downside of your current approach is its inefficiency with large search result sets, as you have to pull down the entire result set from the database each time, even though you only intend to...
View ArticleHow to combine multiple querysets in Django?
I'm trying to build the search for a Django site I am building, and in that search, I am searching in three different models. And to get pagination on the search result list, I would like to use a...
View ArticleAnswer by Solomon Botchway for How to combine multiple querysets in Django?
To get the intersection of both querysets:result = first_queryset.intersection(second_queryset)
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