#27168: "LookupError: App 'xxxxx' doesn't have a 'xxxxx' model" with custom
table
name
----------------------------+-----------------------
Reporter: chagh | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.8
Severity: Normal | Keywords: migration
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
----------------------------+-----------------------
Hi,
I recently wrote a migration script in order to migrate some date and one
of the model uses a custom table name using db_table (let's call it
"myapp_my_custom_table")
When I try to run the migration I got this error:
LookupError: App 'myapp' doesn't have a 'mymodel' model
After investigating, I found out that the model name MyModel (not the real
one) is put in lower case then used as key to fetch the actual model class
(
django.apps.config.AppConfig#get_model )
One of the item of the self.models is named after the db_table
'''my_custom_table''', instead of the model name '''mymodel'''
The solution I found is to pass the table name instead of the model name.
Before:
{{{
def migrate_data(apps, schema_editor):
mymodel_model = apps.get_model(
app_label='myapp',
model_name='MyModel')
}}}
After:
{{{
def migrate_data(apps, schema_editor):
mymodel_model = apps.get_model(
app_label='myapp',
model_name='my_custom_table')
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/27168>
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