Dear All,
I found a workaround to the problem, I would like to double-check with you what
is the impact in term of performance, maintainability etc ...
Problem described in my previous email is caused by two lambda functions
(update_record and delete_record) returned by
return dict(message = db.message(id))
When using this
return dict(message=db(db.message.id==id).select())
only database fields are returned.
What are other methods to avoid these lambda functions ?
Should I raise a bug against the documentation ?
Thanks for your advises
Seb
On 19 Mar 2012, at 01:10, sebsto wrote:
> Dear All,
>
> I am new the web2py and trying to use the relatively new RESTful API,
> as described at
> http://web2py.com/books/default/chapter/29/10#Restful-Web-Services
>
> I am testing it with a very simple model :
> db.define_table('message',
> Field('sender', required=True),
> Field('recipient', required=True),
> Field('text', required=True))
>
> And the doc provided function:
> @request.restful()
> def api():
> response.view = 'generic.json'
> def GET(tablename,id):
> if not tablename=='message': raise HTTP(400)
> return dict(message = db.message(id))
> return locals()
>
> When calling
> curl -v http://localhost:8000/RESTtest/default/api/message/1.json
>
> It generates an HTTP 500 error and the following ticket is logged
> 1 generic.json TypeError: <function <lambda> at 0xa9a72f0> is
> not
> JSON serializable + details
>
> Traceback (most recent call last):
> File "gluon/restricted.py", line 205, in restricted
> File "/Applications/web2py.app/Contents/Resources/applications/
> RESTtest/views/generic.json", line 2, in <module>
> File "gluon/serializers.py", line 61, in json
> File "gluon/contrib/simplejson/__init__.py", line 270, in dumps
> File "gluon/contrib/simplejson/encoder.py", line 217, in encode
> File "gluon/contrib/simplejson/encoder.py", line 486, in _iterencode
> File "gluon/contrib/simplejson/encoder.py", line 460, in
> _iterencode_dict
> File "gluon/contrib/simplejson/encoder.py", line 460, in
> _iterencode_dict
> File "gluon/contrib/simplejson/encoder.py", line 496, in _iterencode
> File "gluon/serializers.py", line 37, in custom_json
> TypeError: <function <lambda> at 0xa9a72f0> is not JSON serializable
>
> Similar problem was reported here
> http://groups.google.com/group/web2py/browse_thread/thread/837aa4b3df4c1a93/1bc6d35248d9f9e1?show_docid=1bc6d35248d9f9e1&pli=1
>
> Is there an issue in generic.json ?
>
> Thanks for your help
>
> Seb
