ARCHBOM-1139: We were seeing about 150 queries to the django_site table
and over 200 to memcached just to load the login page. A lot of these
are via mako template rendering, but there are other sources, and this
will hopefully nip it in the bud.
* Adding samesite cookie option in django 2.1 and above
Django 2.1 release note: Added the SESSION_COOKIE_SAMESITE setting to set the SameSite cookie flag on session cookies.
Right now the ORM is very unhappy about the JSONField `site_values`
in SiteConfigurationHistory containing non-JSON (empty strings). We
cannot even write a data migration using the ORM to populate the field
because that causes a JSONDeserializationError. Therefore, we must
bypass the ORM and populate the values with raw SQL.
DENG-18
This commit fixes an issue originally in 3541643d where an instance
method on a model was missing in a migration. The problem was that
Django is smarter than we thought, and is somehow able to construct an
older version of the model before the commit, where there was no such
method. The solution is just to pull the method out of the model.
DENG-18
This stage does the following:
- Includes a data migration to copy the values from old to new field.
- Changes business logic to switch to using new field.
- Deletes all code references of the old field.
This reverts commit 84de6bc6de
which reverts commit cebeab4348
which implements the first stage of the `values` column rename in
SiteConfiguration. However, I included a small change:
This time, we set a default value on the new `site_values` column so
that the ORM will happily deserialize the JSONField without throwing a
JSONDecodeError.
Updates the existing command, after renaming it, to allow:
* Specifying the site ID instead of the domain.
* Updating the existing site configuration parameters.
* Enabling and disabling the SiteConfiguration instance.
Django 2.0 will make this field required for `ForeignKey` and `OneToOneFields`.
In previous versions the option defaulted to `models.CASCADE` when not
specified. This change should make the deprecation warnings in the current
Django version go away.
The migrations where also modified, but the changes should not cause a change in
the database schema since `models.CASCADE` was already the old default.
