Module: Drifter::Rails::ClassMethods

Defined in:
lib/drifter-rails/class_methods.rb

Instance Method Summary collapse

Instance Method Details

#has_method?(name) ⇒ Boolean

used by InstanceMethods to determine if lat/lng accessors need to be defined

Returns:

  • (Boolean) 


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# File 'lib/drifter-rails/class_methods.rb', line 6

def has_method?(name)
  return true if column_names.include?(name.to_s)
  return true if instance_methods.include?(name.to_s)
  return false
end

#near(origin, options = {}) ⇒ Object

nodoc



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# File 'lib/drifter-rails/class_methods.rb', line 14

def near(origin, options={})
  options[:origin] = origin
  options[:lat_column] = lat_column_name
  options[:lng_column] = lng_column_name

  adapter = self.connection.class.to_s.split('::').last
  method_name = case adapter
    when 'PostgreSQLAdapter' then :to_postgresql
    when 'MysqlAdapter' then :to_mysql
    else raise ArgumentError, "#{adapter} is not supported by drifter-rails"
  end

  distance_sql = Drifter::Distance::Haversine.send(method_name, options)
  sql = "#{table_name}.*, (#{distance_sql}) AS distance"

  scope = select(sql)
  scope = add_conditions_for_within(scope, options, distance_sql)
  return scope
end