Make all LIKE queries case insensitive (#2402)

app/models/concerns/queries.rb

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
+#
+# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
+#
+# This program is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free Software
+# Foundation; either version 3.0 of the License, or (at your option) any later
+# version.
+#
+# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
+
+module Queries
+  extend ActiveSupport::Concern
+
+  def created_at_text
+    active_database = Rails.configuration.database_configuration[Rails.env]["adapter"]
+    # Postgres requires created_at to be cast to a string
+    if active_database == "postgresql"
+      "created_at::text"
+    else
+      "created_at"
+    end
+  end
+
+  def like_text
+    active_database = Rails.configuration.database_configuration[Rails.env]["adapter"]
+    # Use postgres case insensitive like
+    if active_database == "postgresql"
+      "ILIKE"
+    else
+      "LIKE"
+    end
+  end
+end