Messages created with horizon.messages don't appear from workflow handle method

[Gabriel Hurley]

Messages which are created using the horizon.messages code (which handles AJAX error messages) fail to appear when they're raised via exceptions.handle inside a workflow's handle() method. They're being silently swallowed somewhere.

[Gabriel Hurley (gabriel-hurley)]

It turns out that they're being sent along with the AJAX redirect response rather than on the next response which could actually process them.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/10090

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/9953
Committed: http://github.com/openstack/horizon/commit/df5a13c5eca4bf6a34dd48d52c9b1762a0744a95
Submitter: Jenkins
Branch: master

commit df5a13c5eca4bf6a34dd48d52c9b1762a0744a95
Author: Gabriel Hurley <email address hidden>
Date: Fri Jul 13 16:42:28 2012 -0700

    Inline object creation.

    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