Ahh, I understand your confusion now. The previous bit you pointed out was an error indeed, but not the one you were running into. The variable name should be whatever you want it to be, it doesn't have to map to an existing value like "Input Dataset", but there's an issue with the way the tags are handled for parameter replacement that causes a failure when the name contains spaces. Instead of ${Input Dataset}, try ${input_dataset}. I have a fix for this that should be available in the near future, as part of a larger set of changes that should make parameters much more accessible.

On 04/13/2011 10:11 AM, Matthew Conte wrote:
Hi Dannon,

Sorry, I guess I still don't quite get it.  So I should keep the Input
Dataset name the default which is "Input Dataset".  In the next subsequent
step in the workflow I then edit step actions Rename Dataset/output_file
with "${Input Dataset} groomed", for example.  This gives me the same error
as before.  It is still unclear to me what the actual variable name is for
the input dataset so that I can use it to rename output in later steps.  Do
you have an example workflow that uses the input data set name to name the
output of downstream workflow steps that you could share with me as an
example so I can see the usage?  Even a simple two step workflow would do.

Thanks again,

On Wed, Apr 13, 2011 at 6:09 AM, Dannon Baker<dannonba...@me.com>  wrote:

The input dataset steps do not use workflow parameters as they don't
actually create output datasets, but rather act as more of a temporary
handle.  Remove the parameter tags from the input steps and just referring
to those same parameter names in the subsequent steps you wanted to use them
with should work and I think will allow you to do what you want.

Thank you for pointing out the error though, this should definitely be more
gracefully handled and supported with some help text in the editor, I'll see
what I can do about that.  Let me know if this doesn't get up and running
and I'll do what I can to help!


On 04/12/2011 06:20 PM, Matthew Conte wrote:

I'd like to do the same thing that Tanguy described.  I'm trying to figure
out the syntax to this within the workflow editor, but can't quite get it
right.  In your example Dannon, would you just set ${dataset_name} as the
"Name" for your "Input dataset" to capture the input dataset name as a
variable? When I do that and then try to run the workflow I get the
following error:

Error -<type 'exceptions.KeyError'>: 'dataset_name'
URL: http://localhost:8080/galaxy/workflow/run?id=f597429621d6eb2b

line 143 in __call__
   app_iter = self.application(environ, start_response)
File '/path-to-galaxy-dist/eggs/Paste-1.6-py2.6.egg/paste/recursive.py',
line 80 in __call__
   return self.application(environ, start_response)
line 632 in __call__
   return self.application(environ, start_response)
File '/path-to-galaxy-dist/lib/galaxy/web/framework/base.py', line 145 in
   body = method( trans, **kwargs )
File '/path-to-galaxy-dist/lib/galaxy/web/controllers/workflow.py', line
1397 in run
   incoming=kwargs )
File '/path-to-galaxy-dist/lib/galaxy/web/framework/__init__.py', line 650
in fill_template
   return self.fill_template_mako( filename, **kwargs )
File '/path-to-galaxy-dist/lib/galaxy/web/framework/__init__.py', line 661
in fill_template_mako
   return template.render( **data )
File '/path-to-galaxy-dist/eggs/Mako-0.2.5-py2.6.egg/mako/template.py',
133 in render
   return runtime._render(self, self.callable_, args, data)
File '/path-to-galaxy-dist/eggs/Mako-0.2.5-py2.6.egg/mako/runtime.py',
364 in _render
   _render_context(template, callable_, context, *args,
**_kwargs_for_callable(callable_, data))
File '/path-to-galaxy-dist/eggs/Mako-0.2.5-py2.6.egg/mako/runtime.py',
381 in _render_context
   _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
File '/path-to-galaxy-dist/eggs/Mako-0.2.5-py2.6.egg/mako/runtime.py',
414 in _exec_template
   callable_(context, *args, **kwargs)
File '/path-to-galaxy-dist/database/compiled_templates/base.mako.py',
40 in render_body
File '/path-to-galaxy-dist/eggs/Mako-0.2.5-py2.6.egg/mako/runtime.py',
255 in<lambda>
   return lambda *args, **kwargs:callable_(self.context, *args, **kwargs)
File '/path-to-galaxy-dist/database/compiled_templates/workflow/
line 172 in render_body
   pja_ss = pja_ss.replace(rematch, '<span style="background-color:%s"
class="wfpspan wf_parm__%s pja_wfp">%s</span>' % (wf_parms[rematch[2:-1]],
rematch[2:-1], rematch[2:-1]))
KeyError: 'dataset_name'

Perhaps I'm missing something obvious?



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