50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# -*- coding: utf-8 -*-
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2015 Lance Edgar
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#
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# This file is part of Rattail.
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#
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# Rattail is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option)
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# any later version.
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#
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# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
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# more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with Rattail. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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FormAlchemy Fields
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"""
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from __future__ import unicode_literals, absolute_import
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from formalchemy import Field
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def AssociationProxyField(name, **kwargs):
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"""
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Returns a FormAlchemy ``Field`` class which is aware of association
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proxies.
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"""
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class ProxyField(Field):
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def sync(self):
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if not self.is_readonly():
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setattr(self.parent.model, self.name,
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self.renderer.deserialize())
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def value(model):
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return getattr(model, name, None)
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kwargs.setdefault('value', value)
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return ProxyField(name, **kwargs)
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