Class: StrongCSV::TypeWrapper

Inherits:
Struct
  • Object
show all
Defined in:
lib/strong_csv/type_wrapper.rb

Overview

TypeWrapper holds the ‘type` along with `name` and `block`. It might be useful to store metadata for the type, such as `error_message`.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#block ⇒ Proc

Returns:

  • (Proc) 


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# File 'lib/strong_csv/type_wrapper.rb', line 17

TypeWrapper = Struct.new(:name, :type, :error_message, :block, keyword_init: true) do
  def cast(value)
    value_result = type.cast(value)
    casted = block && value_result.success? ? block.call(value_result.value) : value_result.value
    error = if value_result.success?
              nil
            else
              error_message ? [error_message] : value_result.error_messages
            end

    [casted, error]
  end
end

#error_message ⇒ String?

Returns The error message returned if #cast fails. If omitted, the default error message will be used.

Returns:

  • (String, nil) —

    The error message returned if #cast fails. If omitted, the default error message will be used.



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# File 'lib/strong_csv/type_wrapper.rb', line 17

TypeWrapper = Struct.new(:name, :type, :error_message, :block, keyword_init: true) do
  def cast(value)
    value_result = type.cast(value)
    casted = block && value_result.success? ? block.call(value_result.value) : value_result.value
    error = if value_result.success?
              nil
            else
              error_message ? [error_message] : value_result.error_messages
            end

    [casted, error]
  end
end

#name ⇒ Symbol, Integer

Returns The name for the type. This is the CSV header name. If the CSV does not have its header, Integer should be set.

Returns:

  • (Symbol, Integer) —

    The name for the type. This is the CSV header name. If the CSV does not have its header, Integer should be set.



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# File 'lib/strong_csv/type_wrapper.rb', line 17

TypeWrapper = Struct.new(:name, :type, :error_message, :block, keyword_init: true) do
  def cast(value)
    value_result = type.cast(value)
    casted = block && value_result.success? ? block.call(value_result.value) : value_result.value
    error = if value_result.success?
              nil
            else
              error_message ? [error_message] : value_result.error_messages
            end

    [casted, error]
  end
end

#type ⇒ StrongCSV::Type::Base

Returns:

  • (StrongCSV::Type::Base) 


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# File 'lib/strong_csv/type_wrapper.rb', line 17

TypeWrapper = Struct.new(:name, :type, :error_message, :block, keyword_init: true) do
  def cast(value)
    value_result = type.cast(value)
    casted = block && value_result.success? ? block.call(value_result.value) : value_result.value
    error = if value_result.success?
              nil
            else
              error_message ? [error_message] : value_result.error_messages
            end

    [casted, error]
  end
end

Instance Method Details

#cast(value) ⇒ Object 



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# File 'lib/strong_csv/type_wrapper.rb', line 18

def cast(value)
  value_result = type.cast(value)
  casted = block && value_result.success? ? block.call(value_result.value) : value_result.value
  error = if value_result.success?
            nil
          else
            error_message ? [error_message] : value_result.error_messages
          end

  [casted, error]
end