Class: Modeling::ModelField

Inherits:
Object
  • Object
show all
Defined in:
lib/modeling/model_field.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, instance_variable, writer, reader, tester) ⇒ ModelField

Returns a new instance of ModelField.



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# File 'lib/modeling/model_field.rb', line 3

def initialize name, instance_variable, writer, reader, tester
  @name = name
  @instance_variable = instance_variable
  @writer = writer
  @reader = reader
  @tester = tester
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/modeling/model_field.rb', line 11

def name
  @name
end

Class Method Details

.parse(argument, filter = nil) ⇒ Object 



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# File 'lib/modeling/model_field.rb', line 34

def parse argument, filter = nil
  case argument
  when ModelField
    argument
  when Symbol, String
    parse_model_field argument
  else
    raise "Unsupported argument #{argument} of #{argument.class} class."
  end
end

.parse_model_field(argument) ⇒ Object 



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# File 'lib/modeling/model_field.rb', line 45

def parse_model_field argument
  instance_variable = reader = writer = tester = false
  if argument.start_with? "@"
    meta, name = argument.to_s.split "_", 2
    meta.to_s.each_char do |char|
      case char
      when "r", "R" then reader = true
      when "w", "W" then writer = true
      when "t", "T" then tester = true
      when "i", "I" then instance_variable = true
      end
    end
  else
    name = argument
    reader = writer = instance_variable = true
  end
  raise "Invalid model field #{argument}" unless name =~ /\w+/
  ModelField.new name.to_sym, instance_variable, writer, reader, tester
end

Instance Method Details

#instance_variable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/modeling/model_field.rb', line 17

def instance_variable?
  @instance_variable
end

#instance_variable_name ⇒ Object 



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# File 'lib/modeling/model_field.rb', line 13

def instance_variable_name
  "@#{name}"
end

#reader? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/modeling/model_field.rb', line 25

def reader?
  @reader
end

#tester? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/modeling/model_field.rb', line 29

def tester?
  @tester
end

#writer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/modeling/model_field.rb', line 21

def writer?
  @writer
end