Python jsonfield.fields() Examples

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Example #1
Source File: 0039_appsource_approved_apps.py    From govready-q with GNU General Public License v3.0 5 votes vote down vote up 
def add_default_value(apps, schema_editor):
    # MySQL does not support default values on TEXT fields,
    # which back JSONField fields, and so the migration will
    # fill in the column with the empty string, which is not
    # valid JSON. This is a problem any time we add a JSONField
    # in a migration *if* there are any rows in the table already.
    # Since we create AppSource instances in migration 0016_auto_20170313_1639,
    # there are definitely rows already.
    AppSource = apps.get_model("guidedmodules", "AppSource")
    AppSource.objects.update(approved_apps={})