Class: Mutations::ArrayFilter
Instance Attribute Summary
Attributes inherited from InputFilter
#options
Class Method Summary
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Instance Method Summary
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Methods inherited from InputFilter
#default, default_options, #discard_empty?, #discard_invalid?, #discard_nils?, #has_default?
Constructor Details
#initialize(name, opts = {}, &block) ⇒ ArrayFilter
Returns a new instance of ArrayFilter.
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# File 'lib/mutations/array_filter.rb', line 17
def initialize(name, opts = {}, &block)
super(opts)
@name = name
@element_filter = nil
if block_given?
instance_eval(&block)
end
raise ArgumentError.new("Can't supply both a class and a filter") if @element_filter && self.options[:class]
end
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Class Method Details
.register_additional_filter(type_class, type_name) ⇒ Object
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# File 'lib/mutations/array_filter.rb', line 3
def self.register_additional_filter(type_class, type_name)
define_method(type_name) do |options = {}, &block|
@element_filter = type_class.new(options, &block)
end
end
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Instance Method Details
#array(options = {}, &block) ⇒ Object
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# File 'lib/mutations/array_filter.rb', line 38
def array(options = {}, &block)
@element_filter = ArrayFilter.new(nil, options, &block)
end
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#filter(data) ⇒ Object
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# File 'lib/mutations/array_filter.rb', line 56
def filter(data)
initialize_constants!
if data.nil?
return [nil, nil] if options[:nils]
return [nil, :nils]
end
if !data.is_a?(Array) && options[:arrayize]
return [[], nil] if data == ""
data = Array(data)
end
if data.is_a?(Array)
errors = ErrorArray.new
filtered_data = []
found_error = false
return [data, :min_length] if options[:min_length] && data.length < options[:min_length]
return [data, :max_length] if options[:max_length] && data.length > options[:max_length]
data.each_with_index do |el, i|
el_filtered, el_error = filter_element(el)
el_error = ErrorAtom.new(@name, el_error, :index => i) if el_error.is_a?(Symbol)
errors << el_error
if el_error
found_error = true
else
filtered_data << el_filtered
end
end
if found_error && !(@element_filter && @element_filter.discard_invalid?)
[data, errors]
else
[filtered_data, nil]
end
else
return [data, :array]
end
end
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#filter_element(data) ⇒ Object
Returns [filtered, errors]
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# File 'lib/mutations/array_filter.rb', line 99
def filter_element(data)
if @element_filter
data, el_errors = @element_filter.filter(data)
return [data, el_errors] if el_errors
elsif options[:class]
if !data.is_a?(options[:class])
return [data, :class]
end
end
[data, nil]
end
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#hash(options = {}, &block) ⇒ Object
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# File 'lib/mutations/array_filter.rb', line 30
def hash(options = {}, &block)
@element_filter = HashFilter.new(options, &block)
end
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#initialize_constants! ⇒ Object
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# File 'lib/mutations/array_filter.rb', line 42
def initialize_constants!
@initialize_constants ||= begin
if options[:class]
options[:class] = options[:class].constantize if options[:class].is_a?(String)
end
true
end
unless Mutations.cache_constants?
options[:class] = options[:class].to_s.constantize if options[:class]
end
end
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#model(name, options = {}) ⇒ Object
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# File 'lib/mutations/array_filter.rb', line 34
def model(name, options = {})
@element_filter = ModelFilter.new(name.to_sym, options)
end
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