Merge pull request #3413 from jdufresne/citext

Add support for PostgreSQL citext data type

app/assets/javascripts/rails_admin/ra.filter-box.js

@@ -164,6 +164,7 @@
               )
             );
           break;
+        case "citext":
         case "string":
         case "text":
         case "belongs_to_association":

lib/rails_admin/adapters/active_record.rb

@@ -220,7 +220,7 @@ def build_statement_for_type
           case @type
           when :boolean                   then build_statement_for_boolean
           when :integer, :decimal, :float then build_statement_for_integer_decimal_or_float
-          when :string, :text             then build_statement_for_string_or_text
+          when :string, :text, :citext    then build_statement_for_string_or_text
           when :enum                      then build_statement_for_enum
           when :belongs_to_association    then build_statement_for_belongs_to_association
           when :uuid                      then build_statement_for_uuid

lib/rails_admin/config/fields/types/all.rb

@@ -38,3 +38,4 @@
 require 'rails_admin/config/fields/types/json'
 require 'rails_admin/config/fields/types/inet'
 require 'rails_admin/config/fields/types/uuid'
+require 'rails_admin/config/fields/types/citext'

lib/rails_admin/config/fields/types/citext.rb

@@ -0,0 +1,13 @@
+require 'rails_admin/config/fields/types/text'
+
+module RailsAdmin
+  module Config
+    module Fields
+      module Types
+        class Citext < Text
+          RailsAdmin::Config::Fields::Types.register(:citext, self)
+        end
+      end
+    end
+  end
+end

spec/rails_admin/config/fields/types/citext_spec.rb

@@ -0,0 +1,7 @@
+require 'spec_helper'
+
+RSpec.describe RailsAdmin::Config::Fields::Types::Citext do
+  it_behaves_like 'a generic field type', :string_field
+
+  it_behaves_like 'a string-like field type', :string_field
+end