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Add option to save Web Flow output to MVC flash scope

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Output from a flow can now be saved to the flash scope of Spring MVC
when the 'saveOutputToFlashScopeOnRedirect' property of the
FlowHandlerAdapter is 'true'.

For backwards compatibility this is an opt-in feature that must be
configured by the user.

Issues: SWF-1561
This commit is contained in:
Phillip Webb
2012-07-23 09:13:52 -07:00
committed by Rossen Stoyanchev
parent d066f1f8ad
commit 91e8a96c11
4 changed files with 190 additions and 155 deletions
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27
src/reference/spring-mvc.xml
View File

@@ -469,6 +469,31 @@ mvn package
# import into Eclipse</programlisting>
</para>
</sect2>
</sect1>
<sect1 id="spring-mvc-flash-output">
<title>Saving Flow Output to MVC Flash Scope</title>
<para>Flow output can be automatically saved to MVC flash scope when an <code>end-state</code>
performs an internal redirect. This is particularly useful when displaying a summary
screen at the end of a flow. For backwards compatibility this feature is disabled by
default, to enable set <code>saveOutputToFlashScopeOnRedirect</code> on your
<code>FlowHandlerAdapter</code> to <code>true</code>.</para>
<programlisting language="xml">
&lt;!-- Enables FlowHandler URL mapping --&gt;
&lt;bean class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter"&gt;
&lt;property name="flowExecutor" ref="flowExecutor" /&gt;
&lt;property name="saveOutputToFlashScopeOnRedirect" value="true" /&gt;
&lt;/bean&gt;
</programlisting>
<para>The following example will add <code>confirmationNumber</code> to the MVC flash scope
before redirecting to the <code>summary</code> screen.</para>
<programlisting language="xml">
&lt;end-state id="finish" view="externalRedirect:summary"&gt;
&lt;output name="confirmationNumber" value="booking.confirmationNumber" /&gt;
&lt;/end-state&gt;
</programlisting>
</sect1>
</chapter>

6
src/reference/whatsnew.xml
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@@ -23,6 +23,12 @@
included as part of their Spring configuration. See <xref linkend="portlet-jsf"/>.
</para>
</sect2>
<sect2 id="whatsnew-swf-mvcflash">
<title>Saving Flow Output to Spring MVC Flash Scope</title>
<para>
Flow output can now be saved to Spring MVC Flash Scope for any <code>end-state</code> that issues an internal redirect. To enable this feature set <code>FlowHandlerAdapter.saveOutputToFlashScopeOnRedirect</code>. See <xref linkend="spring-mvc-flash-output"/>.
</para>
</sect2>
</sect1>
<sect1 id="whatsnew-swf-230">
<title>Spring Web Flow 2.3</title>