Django database query How to get object by id

Question

Django automatically creates an id field as primary key   Now I need to get the object by this id   object   Class objects filter      How to write this filter

User · Answer

In case you don t have some id  e g   mysite com something 9182301  you can use get object or 404 importing by from django shortcuts import get object or 404  Use example  def myFunc request  my pk       my var   get object or 404 CLASS NAME  pk my pk

User · Answer

If you want to get an object  using get   is more straightforward   obj   Class objects get pk this object id

User · Answer

I got here for the same problem  but for a different reason   Class objects get id 1    This code was raising an ImportError exception  What was confusing me was that the code below executed fine and returned a result set as expected   Class objects all     Tail of the traceback for the get   method   File  django db models loading py   line 197  in get models     self  populate   File  django db models loading py   line 72  in  populate     self load app app name  True  File  django db models loading py   line 94  in load app     app module   import module app name  File  django utils importlib py   line 35  in import module       import   name  ImportError  No module named myapp   Reading the code inside Django s loading py  I came to the conclusion that my settings py had a bad path to my app which contains my Class model definition  All I had to do was correct the path to the app and the get   method executed fine   Here is my settings py with the corrected path   INSTALLED APPS          django contrib contenttypes        django contrib sessions        django contrib sites                  mywebproject myapp        All the confusion was caused because I am using Django s ORM as a standalone  so the namespace had to reflect that

User · Answer

You can also do   obj   ClassModel get by id object id     This works  but there may I m not sure if it s supported in Django 2

User · Answer

You can also use get object or 404 django shortcut  It raises a 404 error if object is not found

User · Answer

You can use   objects all Class objects filter filter condition       This will return a query set even if it gets one object  If you need exactly one object use   obj Class objects get conditon

[django] Django database query: How to get object by id?

Examples related to django

Examples related to django-models

Examples related to django-orm