dumpdata

How to use call_command with dumpdata command to save json to file

北城以北 提交于 2019-11-30 08:35:31
I am trying to use the call_command method to call the dumpdata command . Manually, I use it as follows to save the data to a file. python manage.py dumpdata appname_one appname_two > /path/to/save/file.json and it saves the json file. Now, I am in a situation where I need to call this command using the call_command method. I am able to print out the json from the command using the following: from django.core.management import call_command call_command('dumpdata', 'appname_one', 'appname_two') Is there a way I can save the given data to a file like we do it from the command line? had to

Django backup strategy with dumpdata and migrations

可紊 提交于 2019-11-29 21:08:23
问题 As in this question, I set up a dumpdata -based backup system for my database. The setup is akin to running a cron script that calls dumpdata and moves the backup to a remote server, with the aim of simply using loaddata to recover the database. However, I'm not sure this plays well with migrations. loaddata now has an ignorenonexistent switch to deal with deleted models/fields, but it is not able to resolve cases where columns were added with one-off defaults or apply RunPython code. The way

How to use call_command with dumpdata command to save json to file

十年热恋 提交于 2019-11-29 11:57:21
问题 I am trying to use the call_command method to call the dumpdata command . Manually, I use it as follows to save the data to a file. python manage.py dumpdata appname_one appname_two > /path/to/save/file.json and it saves the json file. Now, I am in a situation where I need to call this command using the call_command method. I am able to print out the json from the command using the following: from django.core.management import call_command call_command('dumpdata', 'appname_one', 'appname_two'

Django dump data for a single model?

蹲街弑〆低调 提交于 2019-11-27 16:49:08
Can I perform a dumpdata in Django on just a single model, rather than the whole app, and if so, how? For an app it would be: python manage.py dumpdata myapp However, I want some specific model, such as "myapp.mymodel" to be dumped. The reason being, I have some huge, 3 million records plus, datasets in the same app that I would not like dumped. simplyharsh As of version 1.1 and greater, the Django dumpdata management command allows you to dump data from individual tables: ./manage.py dumpdata myapp1 myapp2.my_model You can also separate multiple apps and models on the command line. Here's the