Glad you got it working, and thanks for the additional information.  Now that I 
know what's different about the non-working workflows I can probably recreate 
and fix this on my end.  Extracted workflows *should* function via the API.

-Dannon

On Jan 9, 2012, at 5:06 PM, Leon Mei wrote:

> Hi Dannon,
> 
> Thanks for the hint. I got it working by removing "input dataset" step and 
> adding it back in the workflow canvas. The previous workflow in question was 
> purely extracted from history.
> 
> So now I can check the details via API: 
> 
> ./display.py <my_key> 
> http://galaxy.nbic.nl/galaxy/api/workflows/e037fdb493429c2a
> Member Information
> ------------------
> url: /galaxy/api/workflows/e037fdb493429c2a
> inputs: {'8648': {'value': '', 'label': 'Input Dataset'}}
> id: e037fdb493429c2a
> name: test
> 
> I still don't understand why it is not working with an extracted workflow. 
> But I can live with this work around.
> 
> Cheers,
> Leon
> 
> 
> On Mon, Jan 9, 2012 at 3:18 PM, Dannon Baker <dannonba...@me.com> wrote:
> Leon,
> 
> I'm not seeing this behavior in any of my instances.  I assume they work 
> correctly through the standard galaxy interface, but is there anything 
> special about the workflows in question?  Is there perhaps a tool with no 
> inputs in use?
> 
> Thanks!
> 
> -Dannon
> 
> 
> 
> 
> On Jan 6, 2012, at 11:59 AM, Leon Mei wrote:
> 
> > Hi,
> >
> > I received an error when I was trying to view the details of existing 
> > workflows through API.
> >
> > I can see 4 workflows owned by myself successfully. But viewing the details 
> > of any workflow got me a 500 error.
> >
> > ./display.py  <my_key> http://galaxy.nbic.nl/galaxy/api/workflows
> > Collection Members
> > ------------------
> > #1: /galaxy/api/workflows/e037fdb493429c2a
> >   name: test
> >   id: e037fdb493429c2a
> > #2: /galaxy/api/workflows/13120e62d0fbb985
> >   name: imported: Partial Workflow for Student Project (1)
> >   id: 13120e62d0fbb985
> > #3: /galaxy/api/workflows/c9468fdb6dc5c5f1
> >   name: GAPSS SNP calling
> >   id: c9468fdb6dc5c5f1
> > #4: /galaxy/api/workflows/3f5830403180d620
> >   name: GAPPS CAGE
> >   id: 3f5830403180d620
> >
> > 4 element(s) in collection
> >
> > ./display.py <my_key> 
> > http://galaxy.nbic.nl/galaxy/api/workflows/e037fdb493429c2a
> > HTTP Error 500: Internal Server Error
> > 500 Internal Server Error
> > The server has either erred or is incapable of performing
> > the requested operation.
> >
> > Here is the error message in paster.log:
> > /*
> > galaxy.web.framework ERROR 2012-01-06 17:46:53,349 Uncaught exception in 
> > exposed API method:
> > Traceback (most recent call last):
> >   File 
> > "/opt/galaxy/prog/galaxy-2011-12-5/lib/galaxy/web/framework/__init__.py", 
> > line 147, in decorator
> >     return simplejson.dumps( func( self, trans, *args, **kwargs ) )
> >   File "/opt/galaxy/prog/galaxy-2011-12-5/lib/galaxy/web/api/workflows.py", 
> > line 68, in show
> >     inputs[step.id] = {'label':step.tool_inputs['name'], 'value':""}
> > TypeError: 'NoneType' object is unsubscriptable
> > <my_IP> - - [06/Jan/2012:17:46:53 +0200] "GET 
> > /galaxy/api/workflows/e037fdb493429c2a?key=<my_key> HTTP/1.1" 500 - "-" 
> > "Python-urllib/2.6"
> > */
> >
> > Any suggestion on how to solve this problem?
> >
> > Thanks,
> > Leon
> >
> > --
> > Hailiang (Leon) Mei
> > Netherlands Bioinformatics Center
> > BioAssist NGS Taskforce
> >  - https://wiki.nbic.nl/index.php/Next_Generation_Sequencing
> > Skype: leon_mei    Mobile: +31 6 41709231
> > ___________________________________________________________
> > Please keep all replies on the list by using "reply all"
> > in your mail client.  To manage your subscriptions to this
> > and other Galaxy lists, please use the interface at:
> >
> >  http://lists.bx.psu.edu/
> 
> 
> 
> 
> -- 
> Hailiang (Leon) Mei
> Netherlands Bioinformatics Center   
> BioAssist NGS Taskforce 
>  - https://wiki.nbic.nl/index.php/Next_Generation_Sequencing
> Skype: leon_mei    Mobile: +31 6 41709231

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