Override primary_key or auto keys

[miry]

In tests, I sometimes need to create records with specific values, such as a past created_at:

class User < Marten::Model
  with_timestamp_fields
  field :id, :big_int, primary_key: true, auto: true
  field :name, :string, max_size: 255, null: true, blank: true
end

User.create!(created_at: 30.days.ago)

Or I may need to set a specific id:

User.get_or_create!(id: 3, name: "Others")

However, I’ve noticed that the database seems to ignore user-supplied values for these fields.
I tried to dig into the code—for example, by inspecting changed fields—but couldn’t find a reliable way to make it work.

Have you encountered this before? Do you know of any workarounds?

[ellmetha]

Hey! 👋

Manually specifying IDs is something that is not supported at the moment (we can consider adding support for this, though!).

The created_at attribute is usually intended to be populated automatically, and as such, it's not possible to manually specify it. That said you can still update the created_at value by manually updating the record if necessary:

user.update!(created_at: 30.days.ago)

[ellmetha]

@miry the inability to manually set auto-incremented PKs on creation was fixed in the latest release (0.5.6). Thanks for reporting this!

[miry]

I saw and I have already tested. Thank you very much for the fast fix.

PS: I learned about values.