django make migrations

the migration file to make sure there is no problem. Then run: pythonmanager.pymigrate The migrate command will compare and apply the migration.3. From south to new Django migrations To upgrade from south to the latest Django migration, follow these steps: Make sure a

to add data to the table. Add data to the table, INSERT statements like database tablesB = BookInfo() b.btitle = ‘abc b.save() Modify table data, similar to a table update operationB = BookInfo.objects.get(pk=1) pk是主键 primarykehy b.btitle =‘abc‘ b.save() Query tableBookInfo.objects.all() Delete a tableb.delete() BookInfo.objects.all() 查看结果 The test flow is as follows:A virtual environment to create a project test4 and application Book

Because the new project is being re-planned, the database table structure is not the same as it used to be, but I want to save a lot of previous user certifications.So I looked at the Django Import and Export feature.~~~~~~~~~~~~~~~~~~~Data import:Auth.jsonTo export user data:Python manage.py dumpdata auth > Auth.jsonIf the following error occurs, you need to change all the errors in the JSON file ("Content_Type": 18), because the data tables are diff

Admin user non-interactive creation:" From django.contrib.auth.models import User; User.objects.create_superuser (' myadmin ', ' [email protected] ', ' hunter2 ')' | Python manage.py ShellDatabase migrations that rely on Auth.user:Python manage.py migrate Authpython manage.py MigrateResources:Http://stackoverflow.com/questions/1466827/automatically-create-an-admin-user-when-running-djangos-manage-py-syncdbHttp://stackoverflow.com/questions/29689365/au

:*/5 ****? Echo "Hello World">/home/linjiqin/helloworld.txt B. Shell filesCall the/home/linjiqin/helloworld. Sh file every 5 seconds. The Cron format is as follows:*/5 ****? /Home/linjiqin/helloworld. Sh The file/home/linjiqin/helloworld. Sh contains the following content: #!/bin/shcd /home/linjiqin/echo "Hello World" >> HelloWorld.txt Note: Remember to restart after editing, otherwise it will be invalid.Sudo service cron restartSudo service cron statusCrontab-L # view CronCrontab-e # modify Cr

blog.ericsk.org/archives/815 There are no killers in the title, you'll know it by the book. On the official website of the Ruby on Rails, there are 15 minutes to make a weblog screencast, which is a quick demo of RoR . But never too superstitious. Only RoR can be so fast, and by the recent squeeze of a little time to look at Django, I would also like to start as a "10 to

Set django in sae to make the working environment of sae consistent with that of the local python environment, djangopython In sae, a python environment is installed. If you want sae to import the downloaded django or other modules, you can create a new file directory in svn, such as site-packages, which is the same as the python installation directory, this dir

If you modify the Django view to restart the server in a production environment, the cost can be significantIf you are deploying with UwsgiDirectly withTouch $HOME/webapps/django/myapp/myapp/myapp.wsgiReferenceHttp://stackoverflow.com/questions/9183114/is-it-possible-to-reload-the-view-without-restarting-djangoHttps://community.webfaction.com/questions/15040/seamless-restart-for-

Sublime text is a very powerful text editor, below we describe how to make the Sublime text 3 to create a Python/django development tool:1. Installing Sublime Text 3Although the Sublime 3 is still in beta, it has been very stable and has been enhanced faster than Sublime 2. Sublime 3 can be downloaded and installed on the website. Sublime is free software, but if you have enough financial power, you can con

Previous uploads are rough, so improve on the user experience.Also, combine Django for location upload.This is done in two steps, the first time to upload to the TMP directory,The second time, the files under TMP are transferred to the standard directory.form.pyFile_path = forms. Charfield ( required=True, label=u" upload file ", widget= forms. TextInput ( attrs={ 'rows': 2, ' class'uk-wid

Upload image analysis:The SAE setup guidelines are as follows:Process user upload filesAdd the following configuration in setttings.py.# The maximum size that a file can hold in memory when modifying an upload is 10m File_upload_max_memory_size = 10485760# The local file system of the SAE is read-only, modifying the Django file storage backend for storage' sae.ext.django.storage.backend.Storage'# using media this bucket' Media ' # ref:https://docs.d