class GraphQL::Schema::Validator::FormatValidator
Use this to assert that string values match (or don't match) the given RegExp.
@example requiring input to match a pattern
argument :handle, String, required: true, validates: { format: { with: /\A[a-z0-9_]+\Z/ } }
@example reject inputs that match a pattern
argument :word_that_doesnt_begin_with_a_vowel, String, required: true, validates: { format: { without: /\A[aeiou]/ } } # It's pretty hard to come up with a legitimate use case for `without:`
Public Class Methods
new( with: nil, without: nil, message: "%{validated} is invalid", **default_options )
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@param with [RegExp, nil] @param without [Regexp, nil] @param message [String]
Calls superclass method
GraphQL::Schema::Validator::new
# File lib/graphql/schema/validator/format_validator.rb, line 24 def initialize( with: nil, without: nil, message: "%{validated} is invalid", **default_options ) @with_pattern = with @without_pattern = without @message = message super(**default_options) end
Public Instance Methods
validate(_object, _context, value)
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# File lib/graphql/schema/validator/format_validator.rb, line 36 def validate(_object, _context, value) if permitted_empty_value?(value) # Do nothing elsif value.nil? || (@with_pattern && !value.match?(@with_pattern)) || (@without_pattern && value.match?(@without_pattern)) @message end end