Add migration to change columns type of attachments

As suggested in the paperclip update discussed in the previous commit,
we force the type of these fields to be bigint.

db/migrate/20200908084257_change_attachment_size_fields_to_bigint.rb

@@ -0,0 +1,7 @@
+class ChangeAttachmentSizeFieldsToBigint < ActiveRecord::Migration[5.1]
+ def change
+ change_column :site_customization_images, :image_file_size, :bigint
+ change_column :images, :attachment_file_size, :bigint
+ change_column :documents, :attachment_file_size, :bigint
+ end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20200519120717) do
+ActiveRecord::Schema.define(version: 20200908084257) do
 
  # These are extensions that must be enabled in order to support this database
  enable_extension "plpgsql"
@@ -545,7 +545,7 @@
  t.string "title"
  t.string "attachment_file_name"
  t.string "attachment_content_type"
- t.integer "attachment_file_size"
+ t.bigint "attachment_file_size"
  t.datetime "attachment_updated_at"
  t.integer "user_id"
  t.string "documentable_type"
@@ -641,7 +641,7 @@
  t.datetime "updated_at", null: false
  t.string "attachment_file_name"
  t.string "attachment_content_type"
- t.integer "attachment_file_size"
+ t.bigint "attachment_file_size"
  t.datetime "attachment_updated_at"
  t.integer "user_id"
  t.index ["imageable_type", "imageable_id"], name: "index_images_on_imageable_type_and_imageable_id"
@@ -1347,7 +1347,7 @@
  t.string "name", null: false
  t.string "image_file_name"
  t.string "image_content_type"
- t.integer "image_file_size"
+ t.bigint "image_file_size"
  t.datetime "image_updated_at"
  t.datetime "created_at", null: false
  t.datetime "updated_at", null: false