1 files changed, 27 insertions, 0 deletions
diff --git a/activestorage/lib/active_storage/migration.rb b/activestorage/lib/active_storage/migration.rb
new file mode 100644
index 0000000000..2e35e163cd
--- /dev/null
+++ b/activestorage/lib/active_storage/migration.rb
@@ -0,0 +1,27 @@
+class ActiveStorageCreateTables < ActiveRecord::Migration[5.1]
+  def change
+    create_table :active_storage_blobs do |t|
+      t.string   :key
+      t.string   :filename
+      t.string   :content_type
+      t.text     :metadata
+      t.integer  :byte_size
+      t.string   :checksum
+      t.datetime :created_at
+
+      t.index [ :key ], unique: true
+    end
+
+    create_table :active_storage_attachments do |t|
+      t.string  :name
+      t.string  :record_type
+      t.integer :record_id
+      t.integer :blob_id
+
+      t.datetime :created_at
+
+      t.index :blob_id
+      t.index [ :record_type, :record_id, :name, :blob_id ], name: "index_active_storage_attachments_uniqueness", unique: true
+    end
+  end
+end