Add sanitization to clear trailing whitespaces

app/models/local_census_record.rb

@@ -1,8 +1,18 @@
 class LocalCensusRecord < ApplicationRecord
+  before_validation :sanitize
+
   validates :document_number, presence: true
   validates :document_type, presence: true
   validates :date_of_birth, presence: true
   validates :postal_code, presence: true
 
   scope :search,  -> (terms) { where("document_number ILIKE ?", "%#{terms}%") }
+
+  private
+
+    def sanitize
+      self.document_type   = self.document_type&.strip
+      self.document_number = self.document_number&.strip
+      self.postal_code     = self.postal_code&.strip
+    end
 end

spec/models/local_census_record_spec.rb

@@ -31,6 +31,18 @@ describe LocalCensusRecord do
 
       expect(local_census_record).not_to be_valid
     end
+
+    it "sanitizes text attributes values before validation" do
+      local_census_record.document_type = " DNI "
+      local_census_record.document_number = " #DOCUMENT_NUMBER "
+      local_census_record.postal_code = " 07007 "
+
+      local_census_record.valid?
+
+      expect(local_census_record.document_type).to eq "DNI"
+      expect(local_census_record.document_number).to eq "#DOCUMENT_NUMBER"
+      expect(local_census_record.postal_code).to eq "07007"
+    end
   end
 
   context "scopes" do