Django Dynamic Model provides models which can be modified (fields added, or removed) at runtime, from the code, without changing SQL database schema.
The dynamic fields can coexist with regular fields, can be picked up
and used by model forms, and can be accessed in the usual object.field
fashion in the code and templates.
The dynamic models aren't schemaless: valid fields are defined using
DynamicSchema and DynamicSchemaField models.
Here's a quick example:
from dynamicmodel.models import DynamicModel, DynamicSchema, DynamicForm
class MyModel(DynamicModel):
name = models.CharField(max_length=100) # regular field
schema = DynamicSchema.get_for_model(MyModel)
schema.add_field(name='nickname', type='CharField')
schema.add_field(name='age', type='IntegerField')
m1 = MyModel(name='John Doe')
print m1.nickname # None
m1.nickname = 'JD'
m1.age = 21
m1.save()
class MyForm(DynamicForm):
class Meta:
model = MyModel
form = MyForm({'field': 'foo'}, instance=m1)
form.save()
Install via pip directly from GitHub:
pip install -e git+http://github.com/dobarkod/django-dynamic-model#egg=django-dynamic-model
Documentation is sparse at the moment. Look at the tests for examples how to use it (beyond the quick example above).
Caveat emptor: This is beta software; the API will change a lot, and it may still have serious bugs that will eat your data! All bug reports, fixes, suggestions or pull requests are welcome.
Copyright (C) 2012. GoodCode; Bundles JSONField copyright (c) 2012 Brad Jasper
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