update media feed with anonymous files

. fix some migrations

app/controllers/photos_controller.rb

@@ -13,8 +13,15 @@ def index
       @photos = Photo.all
     end
 
-    photos = current_user.photos rescue Photo.where(user: nil).order("created_at desc")
-    videos = current_user.videos rescue Video.where(user: nil).order("created_at desc")
+    photos = nil
+    videos = nil
+    if current_user != nil
+      photos = Photo.where("user_id = ? or user_id is NULL", current_user.id)
+      videos = Video.where("user_id = ? or user_id is NULL", current_user.id)
+    else
+      photos = Photo.where(user: nil).order("created_at desc")
+      videos = Video.where(user: nil).order("created_at desc")
+    end
 
 
     @feed = [photos, videos].flatten(1).sort_by{|a| a.created_at}.reverse()[0..MAX_FEED]

db/migrate/20190509090818_create_photos.rb

@@ -2,7 +2,7 @@ class CreatePhotos < ActiveRecord::Migration[5.2]
   def change
     create_table :photos do |t|
       t.string :name
-      t.string :user_id
+      t.integer :user_id
 
       t.timestamps
     end

db/migrate/20190628140445_create_videos.rb

@@ -2,7 +2,7 @@ class CreateVideos < ActiveRecord::Migration[5.2]
   def change
     create_table :videos do |t|
       t.string :name
-      t.string :user_id
+      t.integer :user_id
 
       t.timestamps
     end

db/schema.rb

@@ -27,7 +27,7 @@
 
   create_table "photos", force: :cascade do |t|
     t.string "name"
-    t.string "user_id"
+    t.integer "user_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.text "image_data"
@@ -50,7 +50,7 @@
 
   create_table "videos", force: :cascade do |t|
     t.string "name"
-    t.string "user_id"
+    t.integer "user_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.text "video_data"