foreign_key respects table_name_prefix and table_name_suffix

activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb

@@ -331,6 +331,9 @@ def index(column_name, options = {})
       end
 
       def foreign_key(table_name, options = {}) # :nodoc:
+        table_name_prefix = ActiveRecord::Base.table_name_prefix
+        table_name_suffix = ActiveRecord::Base.table_name_suffix
+        table_name = "#{table_name_prefix}#{table_name}#{table_name_suffix}"
         foreign_keys.push([table_name, options])
       end
 

activerecord/test/cases/migration/references_foreign_key_test.rb

@@ -145,6 +145,36 @@ class ReferencesForeignKeyTest < ActiveRecord::TestCase
         end
       end
 
+      class CreateDogsMigration < ActiveRecord::Migration::Current
+        def change
+          create_table :dog_owners
+
+          create_table :dogs do |t|
+            t.references :dog_owner, foreign_key: true
+          end
+        end
+      end
+
+      def test_references_foreign_key_with_prefix
+        ActiveRecord::Base.table_name_prefix = 'p_'
+        migration = CreateDogsMigration.new
+        silence_stream($stdout) { migration.migrate(:up) }
+        assert_equal 1, @connection.foreign_keys("p_dogs").size
+      ensure
+        silence_stream($stdout) { migration.migrate(:down) }
+        ActiveRecord::Base.table_name_prefix = nil
+      end
+
+      def test_references_foreign_key_with_suffix
+        ActiveRecord::Base.table_name_suffix = '_s'
+        migration = CreateDogsMigration.new
+        silence_stream($stdout) { migration.migrate(:up) }
+        assert_equal 1, @connection.foreign_keys("dogs_s").size
+      ensure
+        silence_stream($stdout) { migration.migrate(:down) }
+        ActiveRecord::Base.table_name_suffix = nil
+      end
+
       test "multiple foreign keys can be added to the same table" do
         @connection.create_table :testings do |t|
           t.integer :col_1

activerecord/test/cases/schema_dumper_test.rb

@@ -323,9 +323,9 @@ def up
       create_table("dogs") do |t|
         t.column :name, :string
         t.column :owner_id, :integer
+        t.index [:name]
+        t.foreign_key :dog_owners, column: "owner_id" if supports_foreign_keys?
       end
-      add_index "dogs", [:name]
-      add_foreign_key :dogs, :dog_owners, column: "owner_id" if supports_foreign_keys?
     end
     def down
       drop_table("dogs")