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https://github.com/ash-project/ash_postgres.git
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55 lines
1.8 KiB
Elixir
55 lines
1.8 KiB
Elixir
defmodule AshPostgres.Repo do
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@moduledoc """
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Resources that use the `AshPostgres` data layer use a `Repo` to access the database.
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This repo is a slightly modified version of an `Ecto.Repo`.
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You can use `Ecto.Repo`'s `init/2` to configure your repo like normal, but
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instead of returning `{:ok, config}`, use `super(config)` to pass the
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configuration to the `AshPostgres.Repo` implementation.
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Currently the only additional configuration supported is `installed_extensions`,
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and the only extension that ash_postgres reacts to is `"pg_trgm"`. If this extension
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is installed, then the `AshPostgres.Predicates.Trigram` custom predicate will be
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available.
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```
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def installed_extensions() do
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["pg_trgm"]
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end
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```
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"""
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@doc "Use this to inform the data layer about what extensions are installed"
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@callback installed_extensions() :: [String.t()]
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@doc "Return a list of all schema names (only relevant for a multitenant implementation)"
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@callback all_tenants() :: [String.t()]
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@doc "The path where your tenant migrations are stored (only relevant for a multitenant implementation)"
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@callback tenant_migrations_path() :: String.t()
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defmacro __using__(opts) do
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quote bind_quoted: [opts: opts] do
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otp_app = opts[:otp_app] || raise("Must configure OTP app")
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use Ecto.Repo,
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adapter: Ecto.Adapters.Postgres,
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otp_app: otp_app
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def installed_extensions, do: []
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def tenant_migrations_path, do: nil
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def all_tenants, do: []
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def init(_, config) do
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new_config =
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config
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|> Keyword.put(:installed_extensions, installed_extensions())
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|> Keyword.put(:tenant_migrations_path, tenant_migrations_path())
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{:ok, new_config}
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end
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defoverridable installed_extensions: 0, all_tenants: 0, tenant_migrations_path: 0
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end
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end
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end
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