Hi,

Almost! 

    def get_initial_value( self, trans, context, history=None ):

in /lib/galaxy/tools/parameters/basic.py under class 
LibraryDatasetToolParameter( ToolParameter ) gets past the error.  Now a popup 
with "Grid failed" appears, with an OK button that cleanly exits (see 
attached).  So I guess that part is still broken unless there is more to the 
input parameter setup.  I had tested with

<param name="test" type="library_data" label="test" help="test help"/>

I do like your better solution though, esp. if above control can't be primed 
with the desired library or folder.

d.


Hsiao lab, BC Public Health Microbiology & Reference Laboratory, BC Centre for 
Disease Control
655 West 12th Avenue, Vancouver, British Columbia, V5Z 4R4 Canada
________________________________________
From: James Taylor [ja...@jamestaylor.org]
Sent: Thursday, January 15, 2015 12:53 AM
To: Dooley, Damion
Cc: galaxy-...@lists.bx.psu.edu
Subject: Re: [galaxy-dev] Tool param type "library_data"

It was only ever used for one tool that I know of, but we should make
it work since we try to never break backward compatibility. If you add
the 'history=None' kwarg is that sufficient to fix the problem?

However, I think a better solution to this problem is to build it into
dataset parameters. Anywhere a dataset can be provided it should be an
option to provide a library dataset. Then one could imagine an option
to restrict to only library datasets and a specific library.
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