Class: Grape::Validations::Types::DryTypeCoercer

Inherits:
Object
  • Object
show all
Extended by:
Util::FreezeOnNew
Defined in:
lib/grape/validations/types/dry_type_coercer.rb

Overview

A base class for classes which must identify a coercer to be used. If the strict argument is true, it won't coerce the given value but check its type. More information there https://dry-rb.org/gems/dry-types/main/built-in-types/

Direct Known Subclasses

ArrayCoercer, PrimitiveCoercer

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Util::FreezeOnNew

new

Constructor Details

#initialize(type, strict: false) ⇒ DryTypeCoercer

Returns a new instance of DryTypeCoercer.



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# File 'lib/grape/validations/types/dry_type_coercer.rb', line 37

def initialize(type, strict: false)
  @type = type
  @strict = strict
  @cache_coercer = strict ? DryTypes::StrictCache : DryTypes::ParamsCache
end

Class Method Details

.coercer_instance_for(type, strict: false) ⇒ Object

Returns an instance of a coercer for a given type



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# File 'lib/grape/validations/types/dry_type_coercer.rb', line 31

def coercer_instance_for(type, strict: false)
  klass = type.instance_of?(Class) ? PrimitiveCoercer : collection_coercer_for(type)
  klass.new(type, strict:)
end

.collection_coercer_for(type) ⇒ Object

Returns a collection coercer which corresponds to a given type. Example:

collection_coercer_for(Array)
#=> Grape::Validations::Types::ArrayCoercer


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# File 'lib/grape/validations/types/dry_type_coercer.rb', line 19

def collection_coercer_for(type)
  case type
  when Array
    ArrayCoercer
  when Set
    SetCoercer
  else
    raise ArgumentError, "unknown type: `#{type}`"
  end
end

Instance Method Details

#call(val) ⇒ Object

Coerces the given value to a type which was specified during initialization as a type argument.

Parameters:

  • val (Object) 


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# File 'lib/grape/validations/types/dry_type_coercer.rb', line 47

def call(val)
  return if val.nil?

  @coercer[val]
rescue Dry::Types::CoercionError
  InvalidValue.new
end