Sample
ecto 3.14.1: Navigate default foreign key types in Ecto associations and handle :id type defaults when schemas use binary_id primary keys
Verified sample for hex ecto 3.14.1: Navigate default foreign key types in Ecto associations and handle :id type defaults when schemas use binary_id primary…
sha256:e447eb9ad840ecdae7ce357052059a87dbbe2a677cede495fd997434da32bf90
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MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
elixir linux x64 elixir elixir mix
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| elixir 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · hex@1 |
2026-08-17 |
| elixir 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:PASS · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · hex@1 |
2026-08-18 |
Case
HOW- Goal
- Navigate default foreign key types in Ecto associations and handle :id type defaults when schemas use binary_id primary keys
- Packages
- Symbols
-
- Ecto.Schema.belongs_to
- Ecto.Schema.has_many
- Ecto.Schema.has_one
- Ecto.Schema
- Ecto.Changeset.cast
- Environment
- elixir
- Created
- 2026-08-17T04:43:50Z
Contract
- assert belongs_to defaults the foreign key field type to :id integer even when @primary_key is configured as :binary_id, causing binary UUID string parameters to fail with a cast validation error
- assert casting integer values into default belongs_to foreign key fields succeeds because the unconfigured foreign key type defaults to :id
- assert configuring @foreign_key_type :binary_id sets the default association foreign key field type to :binary_id and allows valid UUID strings to cast successfully
- assert belongs_to defaults :foreign_key to the association name with an _id suffix and :references to :id
- assert belongs_to with define_field: false constructs the association reflection but omits the foreign key from schema fields
- assert has_many and has_one default :foreign_key to the snake_cased source module name with an _id suffix and :references to :id
Files
- NOTES.md
- csx.json
- mix.exs
- mix.lock
- test/contract.exs
- test/test_helper.exs