Fix typo

Author: n-rodriguez

README.md

@@ -212,15 +212,15 @@ end
 
 See [here](#columns-syntax) to get more details about columns definitions and how to play with associated models.
 
-You can customize or sanitize the search value passed to the DB by using the `:formater` option :
+You can customize or sanitize the search value passed to the DB by using the `:formatter` option :
 
 ```ruby
 def view_columns
   @view_columns ||= {
     id:         { source: "User.id" },
     first_name: { source: "User.first_name" },
     last_name:  { source: "User.last_name" },
-    email:      { source: "User.email", formater: -> (o) { o.upcase } },
+    email:      { source: "User.email", formatter: -> (o) { o.upcase } },
     bio:        { source: "User.bio" },
   }
 end

lib/ajax-datatables-rails/datatable/column.rb

@@ -52,14 +52,14 @@ def custom_field?
         !source.include?('.')
       end
 
-      # Add formater option to allow modification of the value
+      # Add formatter option to allow modification of the value
       # before passing it to the database
-      def formater
-        @view_column[:formater]
+      def formatter
+        @view_column[:formatter]
       end
 
       def formated_value
-        formater ? formater.call(search.value) : search.value
+        formatter ? formatter.call(search.value) : search.value
       end
 
       private

spec/ajax-datatables-rails/datatable/column_spec.rb

@@ -128,12 +128,12 @@
     end
   end
 
-  describe '#formater' do
+  describe '#formatter' do
     let(:datatable) { DatatableWithFormater.new(view) }
     let(:column) { datatable.datatable.columns.find { |c| c.data == 'last_name' } }
 
     it 'should be a proc' do
-      expect(column.formater).to be_a(Proc)
+      expect(column.formatter).to be_a(Proc)
     end
   end
 

spec/support/datatable_cond_string.rb

@@ -18,6 +18,6 @@ def view_columns
 
 class DatatableWithFormater < ComplexDatatable
   def view_columns
-    super.deep_merge(last_name: { formater: -> (o) { o.upcase } })
+    super.deep_merge(last_name: { formatter: -> (o) { o.upcase } })
   end
 end