Allow using idy with namespaced models

lib/idy/extension.rb

@@ -44,9 +44,9 @@ def idy_decode(hash, salt: self.salt)
       end
 
       def idy_default_salt
-        alphabet = Array('a'..'z') + [":"]
+        alphabet = Array('a'..'z')
 
-        indexes = name.downcase.split('').map do |char|
+        indexes = name.split("::").last.downcase.split('').map do |char|
           alphabet.index(char) + 1
         end
 

spec/lib/idy/extension/idy_default_salt_spec.rb

@@ -2,10 +2,20 @@
 
 require 'rails_helper'
 
-RSpec.describe Abcdefghijklm, '#idy_default_salt' do
-  context 'when class name has a big length' do
-    it 'is bases on the first 10 class letter position index on alphabet' do
-      expect(described_class.idy_default_salt).to eq '12345678910'
+RSpec.describe '#idy_default_salt' do
+  describe Abcdefghijklm do
+    context 'when class name has a big length' do
+      it 'is bases on the first 10 class letter position index on alphabet' do
+        expect(described_class.idy_default_salt).to eq '12345678910'
+      end
+    end
+  end  
+
+  describe Namespace::NsModel do
+    context 'when model is namespaced into a module' do
+      it 'does not take into account the namespace' do
+        expect(described_class.idy_default_salt).to eq '141913154512'
+      end
     end
   end
-end
+end

spec/support/db/migrate/create_tables.rb

@@ -5,6 +5,9 @@ def change
     create_table :abcdefghijklms do |t|
     end
 
+    create_table :namespace_ns_models do |t|
+    end
+
     create_table :articles do |t|
       t.string :title
     end

spec/support/models/ns_model.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+module Namespace
+  def self.table_name_prefix
+    'namespace_'
+  end
+
+  class NsModel < ActiveRecord::Base
+  end
+end