Changing Models¶
See online documentation at https://docs.djangoproject.com/en/3.0/topics/migrations/
The steps below can be seen in commit https://github.molgen.mpg.de/EditionOpenAccess/django-eoapublications/commit/9c362de9f2cd104e278d0fbdca59fed75dd331e6
models.py¶
The paragraph style ‘divider’ is to be added. In models.py
, add it to the KINDS
array:
KINDS = (
('eoaparagraph', 'Paragraph'),
# ...
('eoadivider', 'Divider')
)
Make the migration, specifying a message and the app:
$ python manage.py makemigrations --name add_divider eoapublications
# Migrations for 'eoapublications':
# eoapublications/migrations/0003_add_divider.py
# - Alter field Kind on element
Then, migrate:
python manage.py migrate
Now, the new paragraph type is available:
publicationimport¶
The publicationimport
script has to be made aware of a new field and how it should deal with it (see https://github.molgen.mpg.de/EditionOpenAccess/django-eoapublications/commit/9c362de9f2cd104e278d0fbdca59fed75dd331e6#diff-f56c1a061762893512c03db32248d05f).
templates¶
Additionally, the templates need to know how to render the new field (see https://github.molgen.mpg.de/EditionOpenAccess/django-eoapublications/commit/9c362de9f2cd104e278d0fbdca59fed75dd331e6#diff-73961337cb59c4fc10c6600d78ce2f38 and https://github.molgen.mpg.de/EditionOpenAccess/django-eoapublications/commit/9c362de9f2cd104e278d0fbdca59fed75dd331e6#diff-9da26c07709b591cbc6db9940b44cfe2).
Distributing models¶
In order to apply these changes to other running instances, commit the migration together with the other changes. See Update components on how to update and migrate changes.