support --prefix option in ecto.migrations (#346)

Author: v0idpwn

lib/mix/tasks/ecto.migrations.ex

@@ -13,7 +13,8 @@ defmodule Mix.Tasks.Ecto.Migrations do
     repo: [:keep, :string],
     no_compile: :boolean,
     no_deps_check: :boolean,
-    migrations_path: :keep
+    migrations_path: :keep,
+    prefix: :string
   ]
 
   @moduledoc """
@@ -50,20 +51,22 @@ defmodule Mix.Tasks.Ecto.Migrations do
 
     * `--no-deps-check` - does not check dependencies before running
 
+    * `--prefix` - the prefix to check migrations on
+
     * `-r`, `--repo` - the repo to obtain the status for
 
   """
 
   @impl true
-  def run(args, migrations \\ &Ecto.Migrator.migrations/2, puts \\ &IO.puts/1) do
+  def run(args, migrations \\ &Ecto.Migrator.migrations/3, puts \\ &IO.puts/1) do
     repos = parse_repo(args)
     {opts, _} = OptionParser.parse! args, strict: @switches, aliases: @aliases
 
     for repo <- repos do
       ensure_repo(repo, args)
       paths = ensure_migrations_paths(repo, opts)
 
-      case Ecto.Migrator.with_repo(repo, &migrations.(&1, paths), [mode: :temporary]) do
+      case Ecto.Migrator.with_repo(repo, &migrations.(&1, paths, opts), [mode: :temporary]) do
         {:ok, repo_status, _} ->
           puts.(
             """

test/mix/tasks/ecto.migrations_test.exs

@@ -38,7 +38,7 @@ defmodule Mix.Tasks.Ecto.MigrationsTest do
   test "displays the up and down status for the default repo" do
     Application.put_env(:ecto_sql, :ecto_repos, [Repo])
 
-    migrations = fn _, _ ->
+    migrations = fn _, _, _ ->
       [
         {:up,   0,              "up_migration_0"},
         {:up,   20160000000001, "up_migration_1"},
@@ -66,7 +66,7 @@ defmodule Mix.Tasks.Ecto.MigrationsTest do
   end
 
   test "migrations displays the up and down status for any given repo" do
-    migrations = fn _, _ ->
+    migrations = fn _, _, _ ->
       [
         {:up,   20160000000001, "up_migration_1"},
         {:down, 20160000000002, "down_migration_1"}
@@ -89,7 +89,7 @@ defmodule Mix.Tasks.Ecto.MigrationsTest do
   test "does not run from _build" do
     Application.put_env(:ecto_sql, :ecto_repos, [Repo])
 
-    migrations = fn repo, [path] ->
+    migrations = fn repo, [path], _opts ->
       assert repo == Repo
       refute path =~ ~r/_build/
       []
@@ -105,7 +105,7 @@ defmodule Mix.Tasks.Ecto.MigrationsTest do
     File.mkdir_p!(path2)
 
     run ["-r", to_string(Repo), "--migrations-path", path1, "--migrations-path", path2],
-        fn Repo, [^path1, ^path2] -> [] end,
+        fn Repo, [^path1, ^path2], _opts -> [] end,
         fn _ -> :ok end
   end
 end