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| 15:30.45 | benw1 | Can I define an instance method (row level) on a Storm model? I keep getting a 'no store' error -- |
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| 15:41.38 | therve | benw1: can you provide more details of your problem? |
| 15:42.35 | benw1 | I'll paste an example |
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| 16:00.58 | benw1 | Is there an efficient way to do this: http://dpaste.com/43717/ |
| 16:01.25 | benw1 | I'm talking specifically about the get_admin_{realms, roles} instance methods on the User class |
| 16:03.23 | jkakar | benw1: Yes. |
| 16:03.58 | jkakar | benw1: You can use the find method on the ReferenceSet. For example, for get_admin_roles you could instead do: return self.roles.find(is_admin == True) |
| 16:04.44 | jkakar | benw1: For get_admin_realms it looks like you want to do a query instead of loading all objects and iterating/filtering them. |
| 16:04.45 | benw1 | and that will filter in the db, not Python correct? |
| 16:05.06 | jkakar | benw1: That's right, it'll generate a query with 'WHERE is_admin = true'. |
| 16:05.15 | benw1 | ahh cool |
| 16:10.10 | benw1 | and with that, can I filter on the class without an instance? I get 'no store' error. I'd like a class method such as 'User.admins' to return a ResultSet of all users who are members of an 'is_admin' role. I guess I need a store to run a 'find' query with. |
| 16:11.56 | jkakar | benw1: Yes, in that case you want something like: http://paste.ubuntu.com/171737/ |
| 16:12.09 | jkakar | benw1: Except you probably want to return the result of the store.find. Ooops. :) |
| 16:14.02 | benw1 | so cool |
| 16:14.03 | jkakar | benw1: Something we do, since we have well defined stores, is provide a method to get the store we want. |
| 16:14.33 | jkakar | benw1: So, instead of passing a store into a method like that we have the method do: store = get_main_store(), and we defined get_main_store somewhere that knows how to return a usable Store. |
| 16:15.13 | jkakar | benw1: It makes it so that callers of your code don't need to worry about having a store to pass in. |
| 16:15.38 | benw1 | That is definitely what I want |
| 16:16.23 | jkakar | In our case, we use Zope with the ZStorm integration, so our get_main_store is really just a call to get the IZStorm utility and retrieve a store by name. |
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