df5a13c5ec
Allows the creation of related objects during a workflow.
For example, this patch implements importing keypairs during
the launch instance workflow and allocating floating IP
addresses during the floating IP associate workflow.
This required several significant changes:
* SelfHandlingForm should no long return a redirect.
Instead, it should return either the object it
created/acted on, or else a boolean such as True.
* The ModalFormView now differentiates between GET
and POST.
* Due to the previous two items, SelfHandlingForm
was mostly gutted (no more maybe_handle, etc.).
* Modals now operate via a "stack" where only the
top modal is visible at any given time and closing
one causes the next one to become visible.
In the process of these large changes there was a large
amount of general code cleanup, especially in the javascript
code and the existing SelfHandlingForm subclasses/ModalFormView
subclasses. Many small bugs were fixed along with the cleanup.
Implements blueprint inline-object-creation.
Fixes bug 994677.
Fixes bug 1025977.
Fixes bug 1027342.
Fixes bug 1025919.
Change-Id: I1808b34cbf6f813eaedf767a6364e815c0c5e969
62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Nebula, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from django.core import urlresolvers
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from django.forms import fields, widgets
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class DynamicSelectWidget(widgets.Select):
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"""
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A subclass of the ``Select`` widget which renders extra attributes for use
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in callbacks to handle dynamic changes to the available choices.
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"""
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_data_add_url_attr = "data-add-item-url"
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def render(self, *args, **kwargs):
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add_item_url = self.get_add_item_url()
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if add_item_url is not None:
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self.attrs.update({self._data_add_url_attr: add_item_url})
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return super(DynamicSelectWidget, self).render(*args, **kwargs)
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def get_add_item_url(self):
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if callable(self.add_item_link):
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return self.add_item_link()
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try:
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return urlresolvers.reverse(self.add_item_link)
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except urlresolvers.NoReverseMatch:
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return self.add_item_link
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class DynamicChoiceField(fields.ChoiceField):
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"""
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A subclass of ``ChoiceField`` with additional properties that make
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dynamically updating its elements easier.
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Notably, the field declaration takes an extra argument, ``add_item_link``
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which may be a string or callable defining the URL that should be used
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for the "add" link associated with the field.
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"""
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widget = DynamicSelectWidget
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def __init__(self, add_item_link=None, *args, **kwargs):
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super(DynamicChoiceField, self).__init__(*args, **kwargs)
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self.widget.add_item_link = add_item_link
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class DynamicTypedChoiceField(DynamicChoiceField, fields.TypedChoiceField):
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""" Simple mix of ``DynamicChoiceField`` and ``TypedChoiceField``. """
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pass
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