lib/attribool/validator_service.rb in attribool-2.0.2 vs lib/attribool/validator_service.rb in attribool-2.0.3

@@ -1,18 +1,39 @@
 # frozen_string_literal: true
 
 module Attribool
+  ##
+  # A simple interface to run validators, which should implement a +valid?+
+  # method which returns true if conditions are valid, and an +error+ method
+  # which returns an exception class and message to be raised when validations
+  # fail.
   class ValidatorService
-    def self.call(validator, *args)
-      new(validator, *args).validate
+    ##
+    # Run the validator.
+    #
+    # @param [Symbol] validator_name
+    #
+    # @param [Object] *args to be forwarded to validator
+    def self.call(validator_name, *args)
+      new(::Attribool::Validators.fetch(validator_name), *args).validate
     end
 
+    ##
+    # Construct the service and inject the validator.
+    #
+    # @param [Class] Validator
+    #
+    # @param [Object] *args
     def initialize(validator, *args)
-      @validator = ::Attribool::Validators.const_get(
-        "#{validator.to_s.split("_").map(&:capitalize).join}Validator"
-      ).new(*args)
+      @validator = validator.new(*args)
     end
 
+    ##
+    # Raises the validator's exception unless its conditions are met.
+    #
+    # @return [Boolean]
+    #
+    # @raise [Exception] if validation fails
     def validate
       @validator.valid? || raise(@validator.error)
     end
   end
 end