Merge pull request #1 from tensionhead/tensionhead-patch-1

Add select and <filter> example

Author: tensionhead

lib/galaxy/tool_util/xsd/galaxy.xsd

@@ -4387,7 +4387,7 @@ appear as ``$options.selection_mode`` in Cheetah. Similarly ``options["vcf_outpu
 would appear as ``$options.vcf_output`` having the values ``'--vcf'`` when true and
 ``''`` when false in Cheetah.
 
-### Example
+### Example 
 
 ```xml
     <inputs>
@@ -4412,6 +4412,30 @@ would appear as ``$options.vcf_output`` having the values ``'--vcf'`` when true
       </data>
     </outputs>
 ```
+
+Variables that have the type attribute ``select`` need a special python statement of
+the form ``selection and "option" in selection`` inside the ``<filter>`` tags. 
+
+### Example
+
+```xml
+    <inputs>
+       <param name="outputs" type="select" optional="true">
+            <option value="save_phase">Phase Movie</option>
+            <option value="save_period">Period Movie</option>
+        </param>
+    </inputs>
+
+    <outputs>
+        <data name="phase_out" format="tiff" label="${movie.name[:-4]}_phase">
+            <filter>outputs and "save_phase" in outputs</filter>
+        </data>
+        <data name="period_out" format="tiff" label="${movie.name[:-4]}_period">
+            <filter>outputs and "save_period" in outputs</filter>
+        </data>
+    </outputs>
+```
+
 ]]></xs:documentation>
     </xs:annotation>
     <xs:simpleContent>