Error message better when trying to use an invalid model prop.

[JohnPostlethwait]

When using an invalid property while querying the model, like so:

geddy.model.MyModel.all({ bad_prop: 'some_value' }, function () {
// ...
});

Geddy model would throw this exception:

TypeError: Cannot read property 'datatype' of undefined
at _createComparison
(/usr/local/lib/node_modules/geddy/node_modules/model/lib/query/query.js:232:27) at _createOperation
(/usr/local/lib/node_modules/geddy/node_modules/model/lib/query/query.js:175:43) at Query.initialize
(/usr/local/lib/node_modules/geddy/node_modules/model/lib/query/query.js:345:40) at Query
(/usr/local/lib/node_modules/geddy/node_modules/model/lib/query/query.js:12:19) at Function.obj.all
(/usr/local/lib/node_modules/geddy/node_modules/model/lib/index.js:378:15) at show
(/Users/my_username/src/my_app/app/controllers/my_controller.js:12:26) at callback
(/usr/local/lib/node_modules/geddy/lib/controller/base_controller.js:282:22) at controller.BaseController._handleAction
(/usr/local/lib/node_modules/geddy/lib/controller/base_controller.js:295:7) at cb [as callback]
(/usr/local/lib/node_modules/geddy/lib/app/index.js:258:36) at async.Initializer.complete
(/usr/local/lib/node_modules/geddy/node_modules/utilities/lib/async.js:286:10)

This is pretty unhelpful. I have changed the error to be more informative to the end-user:

Error: The property "bad_prop" is not a valid property on the
MyModel model. at _createComparison

[mde]

This is awesome. Would it be possible to get a test for this?

[JohnPostlethwait]

I was having some node-gyp install issues on OSX 10.8.5 when trying to install the dependencies. I'll see if I can get that sorted out and get the tests running in order to write one...

[JohnPostlethwait]

Unit test added.

[JohnPostlethwait]

Is that failure unrelated?

[mde]

It's unrelated. It's an impossible-to-repro problem that happens sporadically in the Postgres adapter.

[mde]

Oh, your unit test is even better. Nice work, thanks.

[JohnPostlethwait]

Sure!