Module: Hopsoft::ActsAsLookup::IsLookup::StaticMethods

Defined in:
lib/hopsoft/acts_as_lookup.rb

Overview

Add class methods here

Instance Attribute Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/hopsoft/acts_as_lookup.rb', line 148

def method_missing(name, *args)

  if args && args.length == 1
    column_name = args[0].to_s.downcase

    if column_name =~ /^object$/
      return get_record(name)
    else
      if @lookup_columns.include?(column_name)
        # once here we are assuming they are performing a lookup
        return get_column_value(name, column_name)
      end
    end
  end

  return super
end

Instance Attribute Details

#key_column ⇒ Object (readonly)

Returns the value of attribute key_column.



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# File 'lib/hopsoft/acts_as_lookup.rb', line 146

def key_column
  @key_column
end

Instance Method Details

#get_column_value(value, column_name) ⇒ Object

Gets a column’s value from an “acts_as_lookup” model.

Params

  • value - The “key column” value to find.

  • column_name - The column’s name to return a value for.



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# File 'lib/hopsoft/acts_as_lookup.rb', line 171

def get_column_value(value, column_name)
  record = get_record(value)
  return record.attributes[column_name] if record
  return nil
end

#get_record(value) ⇒ Object

Gets an ActiveRecord object from an “acts_as_lookup” model.

Params

  • value - The “key column” value to find.



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# File 'lib/hopsoft/acts_as_lookup.rb', line 181

def get_record(value)
  value = value.to_s.downcase.gsub(/_/, " ")
  finder_method = "find_by_#{@key_column}"
  item = send(finder_method, value)
  item
end

#init ⇒ Object

Initializes the plugin.



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# File 'lib/hopsoft/acts_as_lookup.rb', line 189

def init
  @lookup_columns = new.attributes.keys.map {|attr_name| attr_name.downcase.gsub(/ /, "_") }
  @lookup_columns << "id"
end