How to trigger creation of other resources upon creation of one?

Ash Forum Ash Questions / Help
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1

I’m trying to setup multitenancy for ash framework, such that one user could be a part of more than one organizations.
So there is an m2m relationship between User and Organization through Team.

However, as an initial thing, I want to setup a ‘personal’ organization for every user for them to fiddle around with, without going through the hassle of creating an org / team.

How do I trigger creation of this org by default when a user signs up?

2

You can add a change with an after action hook to your user resource:

changes do
  change after_action(fn changeset, result, _context -> 
     # create personal organization here
  end), on: [:create] # only do this when a user is created.
end
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3

Right now this feels magical to me.

Could you please point me in the direction of the documentation / code which would have helped me reach this solution on my own?

4

The documentation for Actions can be found here, additionally you can look at the documentation for the Ash.Changeset module here, which describes the Changeset lifecycle and hooks. (NOTE: These links points to Ash 3.0 rc)

5

Thanks for posting those links! In this particular example I used a “builtin change” as well, after_action/1. To see all built in changes here: Ash.Resource.Change.Builtins — ash v3.0.0-rc.29

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