media assets: add status column.

app/models/media_asset.rb

@@ -3,6 +3,13 @@ class MediaAsset < ApplicationRecord
   delegate :metadata, to: :media_metadata
   delegate :is_animated?, :is_animated_gif?, :is_animated_png?, :is_non_repeating_animation?, :is_greyscale?, :is_rotated?, to: :metadata
 
+  enum status: {
+    processing: 100,
+    active: 200,
+    deleted: 300,
+    expunged: 400,
+  }
+
   def self.search(params)
     q = search_attributes(params, :id, :created_at, :updated_at, :md5, :file_ext, :file_size, :image_width, :image_height)
     q = q.apply_default_order(params)

db/migrate/20210926125826_add_status_to_media_assets.rb

@@ -0,0 +1,6 @@
+class AddStatusToMediaAssets < ActiveRecord::Migration[6.1]
+  def change
+    add_column :media_assets, :status, :integer, null: false, default: 200, if_not_exists: true
+    add_index :media_assets, :status, where: "status != 200"
+  end
+end

db/structure.sql

@@ -2474,7 +2474,8 @@ CREATE TABLE public.media_assets (
     file_size integer NOT NULL,
     image_width integer NOT NULL,
     image_height integer NOT NULL,
-    duration double precision
+    duration double precision,
+    status integer DEFAULT 200 NOT NULL
 );
 
 
@@ -7199,6 +7200,13 @@ CREATE INDEX index_media_assets_on_image_width ON public.media_assets USING btre
 CREATE INDEX index_media_assets_on_md5 ON public.media_assets USING btree (md5);
 
 
+--
+-- Name: index_media_assets_on_status; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX index_media_assets_on_status ON public.media_assets USING btree (status) WHERE (status <> 200);
+
+
 --
 -- Name: index_media_assets_on_updated_at; Type: INDEX; Schema: public; Owner: -
 --
@@ -8438,6 +8446,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20210908015203'),
 ('20210921164936'),
 ('20210921170444'),
-('20210926123414');
+('20210926123414'),
+('20210926125826');