Module: Validation::Rules
- Included in:
- Validator
- Defined in:
- lib/validation/validator.rb
Instance Method Summary collapse
-
#errors ⇒ Object
A hash of errors for this object.
-
#rule(field, rule) ⇒ Object
Define a rule for this object.
-
#rules ⇒ Object
A hash of rules for this object.
-
#valid? ⇒ Boolean
Determines if this object is valid.
Instance Method Details
#errors ⇒ Object
A hash of errors for this object
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# File 'lib/validation/validator.rb', line 9 def errors @errors ||= {} end |
#rule(field, rule) ⇒ Object
Define a rule for this object
The rule parameter can be one of the following:
-
a symbol that matches to a class in the Validation::Rule namespace
-
e.g. rule(:field, :not_empty)
-
a hash containing the rule as the key and it’s parameters as the values
-
e.g. rule(:field, :length => => 3, :maximum => 5)
-
an array combining the two previous types
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# File 'lib/validation/validator.rb', line 22 def rule(field, rule) field = field.to_sym if rules[field].nil? rules[field] = [] end begin if rule.respond_to?(:each_pair) add_parameterized_rule(field, rule) elsif rule.respond_to?(:each) rule.each do |r| if r.respond_to?(:each_pair) add_parameterized_rule(field, r) else r = Validation::Rule.const_get(camelize(r)).new add_object_to_rule(r) rules[field] << r end end else rule = Validation::Rule.const_get(camelize(rule)).new add_object_to_rule(rule) rules[field] << rule end rescue NameError => e raise InvalidRule end end |
#rules ⇒ Object
A hash of rules for this object
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# File 'lib/validation/validator.rb', line 4 def rules @rules ||= {} end |
#valid? ⇒ Boolean
Determines if this object is valid. When a rule fails for a field, this will stop processing further rules. In this way, you’ll only get one error per field
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# File 'lib/validation/validator.rb', line 54 def valid? valid = true rules.each_pair do |field, rules| if ! @obj.respond_to?(field) raise InvalidKey end rules.each do |r| if ! r.valid_value?(@obj.send(field)) valid = false errors[field] = {:rule => r.error_key, :params => r.params} break end end end @valid = valid end |