Listing all models in a repository (reflection)

[jbrennan]

I'm trying to whip up some debug pages based around all the models in my repository and I'm wondering if I can do this dynamically. Is there a way to list all the models in a given repository?

I'm not looking to list all the *objects* in the repo (not yet at least), but all the different kinds of models and their properties. I poked around the docs a little bit but was unable to find what I was looking for.

Any way to do this?

Thanks.

[Rhett Sutphin]

Hi,

You can use `DataMapper::Model.descendants` to get all the registered model classes.

Rhett

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[Jason Brennan]

Aha! This seems to work for me, thanks.

I checked the docs for the DescendantSet class, and it appears all its methods are private. Is there a proper way to iterate over all its elements?

I see the -each method, but since that's private I'm wondering if this is the best way to go (in case, for example, it changes in the future).

Thanks so much for your help!

Jason.

[Markus Schirp]

DescendantSet includes Enumerable so you just do

DataMapper::Model.descendants.each do |model|
model.repository ...
end

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