[ckan-dev] Error when editing dataset name

Mon Jun 16 04:17:00 UTC 2014

Hi Rachel

I'm sorry about having old documentation lying around. The CKAN docs site has
a much better example of how to do this:

http://docs.ckan.org/en/latest/extensions/adding-custom-fields.html

Can you try that one and let us know if you can get things working?

On Fri, Jun 13, 2014 at 12:13:54PM +0200, Rachel Knowler wrote:
> Hi dev list,
>
> I'm writing a CKAN extension to add some custom metadata fields to
> datasets, and allow manual editing of them. I followed these
> instructions and had no problems: https://github.com/ckan/ckan/wiki/How-to-Add-Custom-Fields-to-CKAN-2.0
>
> However, I ran into trouble when adding the dataset name as a field
> on the edit page. With this field included in the template
> package/snippets/package_metadata_fields.html, any attempt to update
> the dataset gives the response 500 Server Error. This happens even
> if no values have been changed.
>
> Server logs from an example attempt:
>
> ==> ckan_default.error.log <==
> [Fri Jun 13 09:59:43 2014] [error] [client 172.94.43.1] Error -
> <type 'exceptions.TypeError'>: expected string or buffer
> [Fri Jun 13 09:59:43 2014] [error] 2014-06-13 09:59:43,154 INFO
> [ckan.lib.base]  /dataset/edit/stst_schulwesen render time 0.021
> seconds
>
> ==> ckan_default.custom.log <==
> 172.94.43.1 - - [13/Jun/2014:09:59:43 +0000] "POST
> /dataset/edit/stst_schulwesen HTTP/1.1" 500 7583
> "http://stadtzh.lo/dataset/edit/stst_schulwesen" "Mozilla/5.0 (X11;
> Ubuntu; Linux x86_64; rv:29.0) Gecko/20100101 Firefox/29.0"
>
> ==> ckan_default.error.log <==
> [Fri Jun 13 09:59:43 2014] [error] 2014-06-13 09:59:43,352 INFO
> [ckan.lib.base]  /api/i18n/de render time 0.018 seconds
>
> ==> ckan_default.custom.log <==
> 172.94.43.1 - - [13/Jun/2014:09:59:43 +0000] "GET /api/i18n/de
> HTTP/1.1" 200 1949 "http://stadtzh.lo/dataset/edit/stst_schulwesen"
> "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:29.0) Gecko/20100101
> Firefox/29.0"
>
> ---
>
> I've replicated this on my local CKAN instance and on a Digital
> Ocean server (both using Vagrant boxes). I've tried redirecting the
> return URLs as described here
> (http://docs.ckan.org/en/769-docs-reorg/form-integration.html) but
> this made no difference.
>
> Can anybody see where the problem is? Thanks a lot.
>
> - Rachel
>
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>
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--
Nigel Babu
Developer, Open Knowledge