Class: IknowParams::Serializer::HashOf

Inherits:
IknowParams::Serializer show all
Defined in:
lib/iknow_params/serializer/hash_of.rb

Overview

Serialize a hash structure of application types to JSON types. Does not support fully rendering to/from a JSON string.

Instance Attribute Summary collapse

Attributes inherited from IknowParams::Serializer

#clazz

Instance Method Summary collapse

Methods inherited from IknowParams::Serializer

for, for!, json_value?, #matches_type!, singleton

Constructor Details

#initialize(key_serializer, value_serializer) ⇒ HashOf

Returns a new instance of HashOf.



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# File 'lib/iknow_params/serializer/hash_of.rb', line 9

def initialize(key_serializer, value_serializer)
  super(::Hash)
  @key_serializer   = key_serializer
  @value_serializer = value_serializer
end

Instance Attribute Details

#key_serializer ⇒ Object (readonly)

Returns the value of attribute key_serializer.



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# File 'lib/iknow_params/serializer/hash_of.rb', line 6

def key_serializer
  @key_serializer
end

#value_serializer ⇒ Object (readonly)

Returns the value of attribute value_serializer.



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# File 'lib/iknow_params/serializer/hash_of.rb', line 6

def value_serializer
  @value_serializer
end

Instance Method Details

#dump(structure, json: true) ⇒ Object 



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# File 'lib/iknow_params/serializer/hash_of.rb', line 30

def dump(structure, json: true)
  matches_type!(structure)
  structure.each_with_object({}) do |(key, value), result|
    jkey   = key_serializer.dump(key, json: false)
    jvalue = value_serializer.dump(value, json: json)
    result[jkey] = jvalue
  end
end

#load(jstructure) ⇒ Object 



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# File 'lib/iknow_params/serializer/hash_of.rb', line 15

def load(jstructure)
  jstructure = jstructure.to_unsafe_h if jstructure.is_a?(ActionController::Parameters)

  unless jstructure.is_a?(Hash)
    raise IknowParams::Serializer::LoadError.new(
            "Incorrect type for HashOf: #{jstructure.inspect}:#{jstructure.class.name} is not a hash")
  end

  jstructure.each_with_object({}) do |(jkey, jvalue), result|
    key   = key_serializer.load(jkey)
    value = value_serializer.load(jvalue)
    result[key] = value
  end
end

#matches_type?(vals) ⇒ Boolean

Returns:



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# File 'lib/iknow_params/serializer/hash_of.rb', line 39

def matches_type?(vals)
  super(vals) && vals.all? do |k_val, v_val|
    key_serializer.matches_type?(k_val) && value_serializer.matches_type?(v_val)
  end
end