Adding Custom Variables to MR Session gives "Failed to save modification"

[Torsten Rohlfing]

Hi Folks -

I am a bit stumped here. Maybe someone can help.

I am trying to add a set of three string variables to my MR Session experiments. (I have previously added a set of two booleans with no problem).

Now, I can set up the set of three variables, and they are stored persistently (I can see them in the "Add variables..." dialog now; see attached screenshot). But when I click "Save" and then "Done" I get a popup window saying, "Failed to save modification."

The only error I can find in the server logs from the time that this happens is in restlet.log:

2013-07-08 14:21:55,125 [http-bio-8080-exec-28] ERROR org.nrg.xnat.restlet.resources.SecureResource -
org.nrg.xft.exception.FieldNotFoundException: Field not found: 'xnat:projectdata_id'
        at org.nrg.xft.XFTItem.setProperty(XFTItem.java:4359)
        at org.nrg.xdat.base.BaseElement.setProperty(BaseElement.java:135)
        at org.nrg.xnat.restlet.resources.ProtocolResource.handlePut(ProtocolResource.java:78)
        ....

Any help greatly appreciated, as usual.

Thanks!

Torsten

[Herrick, Rick]

Torsten,

 

Can you look through your xnat_builder folders for the string “projectdata_id” (e.g. find . -type f | xargs fgrep projectdata_id)? I’m pretty certain that’s supposed to be xnat:projectdata/id, so somewhere that calculation is getting messed up with the underscore instead of a slash…

 

Rick Herrick

Sr. Programmer/Analyst

Neuroinformatics Research Group

Washington University School of Medicine

(314) 827-4250

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[Torsten Rohlfing]

Rick:

Well, there are actually a lot of files with 'projectdata_id':

./projects/xnat/sql/xnat-update.sql
./projects/xnat/sql/xnat.sql
./projects/xnat/src/schemas/xnat/display/xnat_projectData_display.xml
./projects/xnat/src/scripts/subject/SubjectForm.js
./deployments/xnat/fields/xnat_projectData_alias.txt
./deployments/xnat/fields/xnat_studyProtocol.txt
./deployments/xnat/fields/xnat_projectData_field.txt
./deployments/xnat/fields/xnat_datatypeProtocol.txt
./deployments/xnat/fields/xnat_abstractProtocol.txt
./deployments/xnat/fields/xnat_projectData.txt
./deployments/xnat/sql/xnat-update.sql
./deployments/xnat/sql/xnat.sql
./deployments/xnat/src/schemas/xnat/display/xnat_projectData_display.xml
./deployments/xnat/src/java/org/nrg/xdat/om/base/BaseXnatAbstractprotocol.java
./deployments/xnat/src/java/org/nrg/xnat/restlet/resources/search/SearchFieldListResource.java
./deployments/xnat/src/java/org/nrg/xnat/restlet/resources/files/XNATTemplate.java
./deployments/xnat/src/java/org/nrg/xnat/restlet/resources/files/FileResource.java
./deployments/xnat/src/java/org/nrg/xnat/restlet/resources/ProtocolResource.java
./deployments/xnat/src/java/org/nrg/xnat/turbine/modules/actions/QuickSearchAction.java
./deployments/xnat/src/scripts/subject/SubjectForm.js
./deployments/xnat/target/xnat/schemas/xnat/display/xnat_projectData_display.xml
./deployments/xnat/target/xnat/WEB-INF/classes/org/nrg/xdat/om/base/BaseXnatAbstractprotocol.class
./deployments/xnat/target/xnat/WEB-INF/classes/org/nrg/xnat/restlet/resources/ProtocolResource.class
./deployments/xnat/target/xnat/WEB-INF/classes/org/nrg/xnat/restlet/resources/search/SearchFieldListResource.class
./deployments/xnat/target/xnat/WEB-INF/classes/org/nrg/xnat/restlet/resources/files/XNATTemplate.class
./deployments/xnat/target/xnat/WEB-INF/classes/org/nrg/xnat/restlet/resources/files/FileResource.class
./deployments/xnat/target/xnat/WEB-INF/classes/org/nrg/xnat/turbine/modules/actions/QuickSearchAction.class
./deployments/xnat/target/xnat/scripts/subject/SubjectForm.js
./deployments/xnat/target/src/org/nrg/xdat/om/base/BaseXnatAbstractprotocol.java
./deployments/xnat/target/src/org/nrg/xnat/restlet/resources/search/SearchFieldListResource.java
./deployments/xnat/target/src/org/nrg/xnat/restlet/resources/files/XNATTemplate.java
./deployments/xnat/target/src/org/nrg/xnat/restlet/resources/files/FileResource.java
./deployments/xnat/target/src/org/nrg/xnat/restlet/resources/ProtocolResource.java
./deployments/xnat/target/src/org/nrg/xnat/turbine/modules/actions/QuickSearchAction.java
./deployments/xnat/target/classes/org/nrg/xdat/om/base/BaseXnatAbstractprotocol.class
./deployments/xnat/target/classes/org/nrg/xnat/restlet/resources/ProtocolResource.class
./deployments/xnat/target/classes/org/nrg/xnat/restlet/resources/search/SearchFieldListResource.class
./deployments/xnat/target/classes/org/nrg/xnat/restlet/resources/files/XNATTemplate.class
./deployments/xnat/target/classes/org/nrg/xnat/restlet/resources/files/FileResource.class
./deployments/xnat/target/classes/org/nrg/xnat/turbine/modules/actions/QuickSearchAction.class
./plugin-resources/webapp/xnat/java/org/nrg/xdat/om/base/BaseXnatAbstractprotocol.java
./plugin-resources/webapp/xnat/java/org/nrg/xnat/restlet/resources/search/SearchFieldListResource.java
./plugin-resources/webapp/xnat/java/org/nrg/xnat/restlet/resources/files/XNATTemplate.java
./plugin-resources/webapp/xnat/java/org/nrg/xnat/restlet/resources/files/FileResource.java
./plugin-resources/webapp/xnat/java/org/nrg/xnat/restlet/resources/ProtocolResource.java
./plugin-resources/webapp/xnat/java/org/nrg/xnat/turbine/modules/actions/QuickSearchAction.java
./plugin-resources/webapp/xnat/scripts/subject/SubjectForm.js
./plugin-resources/project-skeletons/xnat/src/schemas/xnat/display/xnat_projectData_display.xml
./src/ManageProjectAccessories.java
./classes/ManageProjectAccessories.class
./release_notes.txt


That doesn't look very helpful, does it?

Thanks!

Torsten

[Tim Olsen]

Torsten,

 

Do you see this exception when modifying the custom variables on other projects, or just this one?

 

Tim

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[Torsten Rohlfing]

Tim:

So with the caveat that I cannot establish whether this exception in the logs is actually the root cause of my problems...

I get the exact same behaviour on all of my projects (I have four). So this does not seem to be project-specific.

I can do some more experimenting around to see more specifically what provokes the error and what does not, but before I do - can you remind me how I can remove a set of custom variables, once created? (I don't necessarily want to be left with a dozen testing-only variable sets when I am done) :)

Thanks!

Torsten

[Tim Olsen]

You should be able to delete the entries by unchecking the checkbox and saving the form.  Is that not working for you?

 

Tim

 

From: xnat_di...@googlegroups.com [mailto:xnat_di...@googlegroups.com] On Behalf Of Torsten Rohlfing
Sent: Tuesday, July 09, 2013 2:38 PM
To: xnat_di...@googlegroups.com
Subject: Re: [XNAT Discussion] Adding Custom Variables to MR Session gives "Failed to save modification"

 

Tim:

--

[Torsten Rohlfing]

Well, I can make the group "disappear" from the project by unchecking the box and saving (although it took a few iterations of "Failed to save modification" before it really went away.

However, it still seems to be in the database - when I try to create a new group under the same name, I get a dialog window saying, "A group named 'Clinical' already exists with 3 field(s); datetocd (string), dateresponse (string), findings (string).  Would you like to use the pre-exising group in this project?"

Does that make sense?

Thanks!

TR

[Tim Olsen]

Are you checking or unchecking the ‘Project specific’ checkbox?

[Torsten Rohlfing]

The idea was to have the same variables in all my projects, so I unchecked that box.

In the meantime I have tried with and without checking it, but that doesn't seem to make any difference.

Other additional recent findings - I can add my new variables to the "default" group, and that works. I can also add them to an already-existing group that I created some weeks back and shared across my projects, and that works too.

The only thing that persistently does not work is to create a new group - or rather, I can /create/ the group, but then not add it to any projects, including the one I created it for.

When I have some more time tomorrow, I am going to try this with your VM distribution to see if it's my local config that's the problem.

Thanks!

Torsten

[Torsten Rohlfing]

Okay, I figured it out, and I am afraid, this was a home-grown problem (sorry everyone!)

So my problems were a result of the patch I suggested here:

https://groups.google.com/d/msg/xnat_discussion/4OnJL1Q4fTo/9p6N6PwjIBMJ

This was to fix the problem where "hidden" fields appear in between custom variables in the XML response to a REST query and confused pyxnat.

Apparently the fix wasn't quite as benign as it first appears. Guess I will have to look into fixing pyxnat instead...

Again, thanks for everyone's help, and sorry for the confusion. (At least now we know that the aforementioned patch, at least by itself, is not a good idea.)

Torsten