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Class: ActiveModel::Type::Binary

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Bytea
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Value
Instance Chain:
self, Value
Inherits: ActiveModel::Type::Value
Defined in: activemodel/lib/active_model/type/binary.rb

Overview

Active Model Binary Type

::ActiveModel::Attribute type for representation of binary data. This type is registered under the :binary key.

Non-string values are coerced to strings using their to_s method.

Class Method Summary

Value - Inherited

.new

Initializes a type with three basic configuration settings: precision, limit, and scale.

Instance Attribute Summary

Instance Method Summary

Value - Inherited

#==, #as_json, #assert_valid_value,
#cast

::ActiveModel::Type casts a value from user input (e.g. from a setter).

#changed?

Determines whether a value has changed for dirty checking.

#changed_in_place?

Determines whether the mutable value has been modified since it was read.

#deserialize

Converts a value from database input to the appropriate ruby type.

#eql?

Alias for Value#==.

#hash,
#serializable?

Returns true if this type can convert value to a type that is usable by the database.

#serialize

Casts a value from the ruby type to a type that the database knows how to understand.

#type

Returns the unique type name as a ::Symbol.

#cast_value

Convenience method for types which do not need separate type casting behavior for user and database inputs.

Constructor Details

This class inherits a constructor from ActiveModel::Type::Value

Instance Attribute Details

#binary?Boolean (readonly)

[ GitHub ]

  
# File 'activemodel/lib/active_model/type/binary.rb', line 16

def binary?
  true
end

Instance Method Details

#cast(value)

[ GitHub ]

  
# File 'activemodel/lib/active_model/type/binary.rb', line 20

def cast(value)
  if value.is_a?(Data)
    value.to_s
  else
    value = super
    value = value.b if ::String === value && value.encoding != Encoding::BINARY
    value
  end
end

#changed_in_place?(raw_old_value, value) ⇒ Boolean

[ GitHub ]

  
# File 'activemodel/lib/active_model/type/binary.rb', line 35

def changed_in_place?(raw_old_value, value)
  old_value = deserialize(raw_old_value)
  old_value != value
end

#serialize(value)

[ GitHub ]

  
# File 'activemodel/lib/active_model/type/binary.rb', line 30

def serialize(value)
  return if value.nil?
  Data.new(super)
end

#type

[ GitHub ]

  
# File 'activemodel/lib/active_model/type/binary.rb', line 12

def type
  :binary
end