Class: Effective::ModelReader

Inherits:
Object
  • Object
show all
Defined in:
app/models/effective/model_reader.rb

Constant Summary collapse

DATATYPES = 
[:binary, :boolean, :date, :datetime, :decimal, :float, :hstore, :inet, :integer, :string, :text, :permitted_param]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ ModelReader

Returns a new instance of ModelReader.



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# File 'app/models/effective/model_reader.rb', line 7

def initialize(&block)
  @attributes = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &block) ⇒ Object 



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# File 'app/models/effective/model_reader.rb', line 15

def method_missing(m, *args, &block)
  if m == :timestamps
    attributes[:created_at] = [:datetime]
    attributes[:updated_at] = [:datetime]
    return
  end

  # Not really an attribute, just a permitted param.
  # something permitted: true
  if args.first.kind_of?(Hash) && args.first.key?(:permitted)
    args.unshift(:permitted_param)
  end

  # Specifying permitted param attributes
  # invitation [:name, :email], permitted: true
  if args.first.kind_of?(Array)
    options = args.find { |arg| arg.kind_of?(Hash) } || { permitted: true }
    args = [:permitted_param, options.merge(permitted_attributes: args.first)]
  end

  unless DATATYPES.include?(args.first)
    raise "expected first argument to be a datatype. Try name :string"
  end

  attributes[m] = args
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'app/models/effective/model_reader.rb', line 5

def attributes
  @attributes
end

Instance Method Details

#read(&block) ⇒ Object 



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# File 'app/models/effective/model_reader.rb', line 11

def read(&block)
  instance_exec(&block)
end