lazr-users team mailing list archive

[Gustavo Rahal <gustavorahal@xxxxxxxxx>]

2010/6/22 Gustavo Rahal <gustavorahal@xxxxxxxxx>

>
>
> 2010/6/22 Gary Poster <gary.poster@xxxxxxxxxxxxx>
>
>
>> On Jun 22, 2010, at 10:15 AM, Gustavo Rahal wrote:
>>
>> > 2010/6/21 Gary Poster <gary.poster@xxxxxxxxxxxxx>
>> >
>> > On Jun 21, 2010, at 2:42 PM, Gustavo Rahal wrote:
>> >
>> > > The problem was really the __repr__ of z3c.form. I fixed it and things
>> worked fine. Will contact z3c.form owner for a permanent fix
>> >
>> > Great.
>> >
>> > > Now zope.app.publication and z3c.form need fixes...
>> > >
>> > > So, one step closer but still not there. At least now it seems i'm
>> really on lazr.restful space. I'm having problems with the following:
>> > >
>> > >    lazr/restful/_resource.py(1887)toDataForJSON()
>> > >    1886         for link_name, publication in publications.items():
>> > > -> 1887             data_for_json[link_name] =
>> absoluteURL(publication,
>> > >    1888
>>  self.request)
>> > >
>> > > absoluteURL call fails with TypeError: There isn't enough context to
>> get URL information
>> > > Here is what the various objects look like:
>> > >
>> > > ipdb> publications
>> > > Out[0]: {'systems_collection_link':
>> <tp4.portal.restful.resources.SystemSet object at 0xaf14d6c>}
>> > > ipdb> publication
>> > > Out[0]: <tp4.portal.restful.resources.SystemSet object at 0xaf14d6c>
>> > > ipdb> self.request
>> > > Out[0]: <lazr.restful.simple.Request instance URL=
>> http://localhost:8080/api/1.0>
>> > >
>> > > My RootResource is:
>> > >
>> > > class WebServiceRootResource(RootResource):
>> > >     """The root resource for a web service."""
>> > >
>> > >     def _build_top_level_objects(self):
>> > >         systemset = SystemSet()
>> > >         systemset.systems = [
>> > >             System(systemset, "foo", "bar"),
>> > >             System(systemset, "1", "2")
>> > >             ]
>> > >         collections = dict(systems=(ISystem, systemset))
>> > >         return collections, {}
>> > >
>> > > Configuration:
>> > >
>> > > class WebServiceConfiguration(BaseWebServiceConfiguration):
>> > >     code_revision = '1'
>> > >     active_versions = ['1.0',]
>> > >     use_https = False
>> > >     last_version_with_mutator_named_operations = None
>> > >     view_permission = 'zope.Public'
>> > >     service_root_uri_prefix = "api/"
>> > >     hostname = "localhost"
>> > >     port = "8080"
>> > >
>> > >
>> > > Thoughts?
>> >
>> > It sounds like you need to define your own IAbsoluteURL implementation
>> for the root object.
>> >
>> > It might be sufficient to add this to your zcml:
>> >
>> > <adapter factory="lazr.restful.simple.RootResourceAbsoluteURL" />
>> >
>> > If you are curious what is going on here, see
>> lazr/restful/docs/absoluteurl.txt
>> >
>> >
>> > This is already done
>> >
>> > Look what happens in lazr/restful/_resource.py(1887)toDataForJSON() :
>> >
>> > ipdb> self.request
>> > Out[0]: <lazr.restful.simple.Request instance URL=
>> http://localhost:8080/api/1.0>
>> > ipdb> publication
>> > Out[0]: <tp4.portal.restful.resources.SystemSet object at 0xb0db04c>
>> > ipdb> getMultiAdapter((publication, self.request), IAbsoluteURL)
>> > Out[0]: <tp4.portal.restful.root.BelowRootAbsoluteURL object at
>> 0xac00b6c>
>> > ipdb> self
>> > Out[0]: <tp4.portal.restful.root.WebServiceRootResource object at
>> 0xe324b0c>
>> > ipdb> getMultiAdapter((self, self.request), IAbsoluteURL)
>> > Out[0]: <tp4.portal.restful.root.RootAbsoluteURL object at 0xb44d50c>
>> >
>> > This works fine:
>> > ipdb> adapter_root = getMultiAdapter((self, self.request), IAbsoluteURL)
>> > ipdb> adapter_root()
>> > Out[0]: 'http://localhost:8080/api/1.0/'
>> >
>> > But then:
>> >
>> > ipdb> adapter = getMultiAdapter((publication, self.request),
>> IAbsoluteURL)
>> > ipdb> adapter()
>> > *** TypeError: There isn't enough context to get URL information. This
>> is probably due to a bug in setting up location information.
>>
>> More guessing:
>>
>> - Does SystemSet declare that it implements
>> zope.location.interfaces.ILocation, either by a direct declaration or by
>> ISystemSet inherting from ILocation?
>> - Does SystemSet actually implement ILocation?
>>
>> See PairSet at the bottom of lazr/restful/example/wsgi/resources.py for an
>> example.
>>
>> Gary
>>
>>
> ipdb> ILocation.providedBy(publication)
> Out[0]: True
> ipdb> publication.__parent__
> Out[0]: <tp4.portal.restful.root.WebServiceRootResource object at
> 0xe773c0c>
> ipdb> publication.__name__
> Out[0]: 'systems'
>
> I tested WSGI example setting "service_root_uri_prefix = "api/"" to the
> WSGI WebServiceConfiguration and it also worked fine. This was mostly the
> only difference compared to what I have.
>
> I have not shown what I did to customize the request. Just to double check:
>
> from lazr.restful.directives import publication_class, request_class
>
> class TP4WSFactory:
>     implements(IRequestPublicationFactory)
>
>     def canHandle(self, environment):
>         ws_config = getUtility(IWebServiceConfiguration)
>         if environment["REQUEST_URI"].startswith("/" +
> ws_config.path_override):
>             return True
>         else:
>             return False
>
>     def __call__(self):
>         return request_class.default, publication_class.default
>
> ZCML:
>
>   <publisher
>       name="LAZRWS"
>       factory=".root.TP4WSFactory"
>       methods="GET POST HEAD DELETE"
>       mimetypes="*"
>       priority="5"
>       />
>
>
>
Does this rings a bell?

ipdb> getMultiAdapter((self, self.request), name='absolute_url')
Out[0]: <zope.app.publisher.browser.viewmeta.AbsoluteURL object at
0xab9f92c>
ipdb> from zope.traversing.browser.interfaces import IAbsoluteURL
ipdb> getMultiAdapter((self, self.request), IAbsoluteURL)
Out[0]: <tp4.portal.restful.root.RootAbsoluteURL object at 0xaccc76c>

Things are failing here:

>
/home/grahal/.buildout/eggs/zope.traversing-3.4.1-py2.5.egg/zope/traversing/browser/absoluteurl.py(57)__str__()
     56
---> 57         url = str(zope.component.getMultiAdapter((container,
request),
     58
name='absolute_url'))


Continuing investigation...