Add url_text column to issuable metric images

Changelog: added

db/migrate/20220118015633_add_url_text_to_issuable_metric_images.rb

+# frozen_string_literal: true
+
+class AddUrlTextToIssuableMetricImages < Gitlab::Database::Migration[1.0]
+  # rubocop:disable Migration/AddLimitToTextColumns
+  # limit is added in 20220118020026_add_url_text_limit_to_issuable_metric_images
+  def change
+    add_column :issuable_metric_images, :url_text, :text
+  end
+  # rubocop:enable Migration/AddLimitToTextColumns
+end

db/migrate/20220118020026_add_url_text_limit_to_issuable_metric_images.rb

+# frozen_string_literal: true
+
+class AddUrlTextLimitToIssuableMetricImages < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  def up
+    add_text_limit :issuable_metric_images, :url_text, 128
+  end
+
+  def down
+    remove_text_limit :issuable_metric_images, :url_text
+  end
+end

db/schema_migrations/20220118015633

+6a73f49306de7c799a39afa3ac1f761840860833a96f1a91cf992c9a3ebfef9b
\ No newline at end of file

db/schema_migrations/20220118020026

+77374c81456f235d3afeb45cdda14552e1ef8047de5aaa3f5bb0a82e4aebe849
\ No newline at end of file

db/structure.sql

@@ -15348,6 +15348,8 @@ CREATE TABLE issuable_metric_images (
     file_store smallint,
     file text NOT NULL,
     url text,
+    url_text text,
+    CONSTRAINT check_3bc6d47661 CHECK ((char_length(url_text) <= 128)),
     CONSTRAINT check_5b3011e234 CHECK ((char_length(url) <= 255)),
     CONSTRAINT check_7ed527062f CHECK ((char_length(file) <= 255))
 );

ee/app/models/issuable_metric_image.rb

@@ -15,6 +15,7 @@ class IssuableMetricImage < ApplicationRecord
   validates :file, presence: true
   validate :validate_file_is_image
   validates :url, length: { maximum: 255 }, public_url: { allow_blank: true }
+  validates :url_text, length: { maximum: 128 }
 
   scope :order_created_at_asc, -> { order(created_at: :asc) }
 

ee/spec/models/issuable_metric_image_spec.rb

@@ -15,6 +15,7 @@ RSpec.describe IssuableMetricImage do
 
     it { is_expected.not_to allow_value(txt_file).for(:file) }
     it { is_expected.to allow_value(img_file).for(:file) }
+    it { is_expected.to validate_length_of(:url_text).is_at_most(128) }
 
     describe 'url' do
       it { is_expected.not_to allow_value('test').for(:url) }