Custom Query (2152 matches)

Reported by dread, 3 years ago.

It is possible to use the CKAN API to insert JSON format data into package extra values, but this data is displayed in the package edit form.

Example: Package ​http://ckan.net/package/hbz_unioncatalog in the API the extra value as a list:

"extras": {"publishingInstitution": ["http://lobid.org/organisation/DE-605", "http://lobid.org/organisation/DE-290"...

yet when you edit the package it loses all the quotes and brackets: ​http://ckan.net/package/edit/hbz_unioncatalog {{{​http://lobid.org/organisation/DE-605http://lobid.org/organisation/DE-290... }}} so when you save the package, the list is mangled into a bad string.

Reported by dread, 4 years ago.

As a

CKAN client using JQuery

I want to

call the CKAN API and instead of receiving back JSON I get JSONP. i.e. "%s(%s)" % (callback, json_content)

Suggested implementation

All API calls allow the JSONP 'callback' parameter to be specified in the request and this wraps the JSON response. See suggested patch to rest.py by Donovan Hide:

​http://knowledgeforge.net/ckan/trac/attachment/ticket/336/resource.patch

Test

import re import unittest

def test_jsonp_callback():

response = self.app.get('/api/search/resource/?url=​http://www.scraperwiki.com&callback=jsoncallback') match = re.match('jsoncallback\(.*\);',response) self.assertTrue(match)

response = self.app.get('/api/search/resource/?url=​http://www.scraperwiki.com') match = re.match('jsoncallback\(.*\);',response) self.assertFalse(match)

I think the point needs to be made that JSONP only works for GET requests and not POST/PUT/DELETE, so there needs to be a check for that in the _finish_ok method.

(thanks to Donovan Hide for test)

Reported by dread, 3 years ago.

Action API needs JSONP support - be able to return responses encapsulated in a function of a supplied name. This is important for remote sites running javascript to interact with a CKAN site.

Specifying the callback parameter is the way we've achieved JSONP with the RESTful and Search APIs. It should work like this:

curl http://test.ckan.net/api/action/package_show?callback=jsoncallback -d '{"id": "fd788e57-dce4-481c-832d-497235bf9f78"}'

Or maybe the callback should be specified in the payload in the context or data_dict?

(My understanding is that CORS is similar - when more browsers support it, can we drop JSONP?)