Module: NamedInstances::ClassMethods

Defined in:
lib/named_instances/base.rb

Defined Under Namespace

Modules: InstanceMethods

Instance Method Summary collapse

Instance Method Details

#get(name_or_names) ⇒ Object 



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# File 'lib/named_instances/base.rb', line 31

def get name_or_names
  load_named_instances unless @named_instances_loaded

  if not name_or_names.is_a?(String) and name_or_names.respond_to? :map
    name_or_names.map {|name| get_one name }
  else
    get_one name_or_names
  end
end

#get_one(name) ⇒ Object 



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# File 'lib/named_instances/base.rb', line 41

def get_one name
  return if name.blank?
  key_name = "#{named_instances_prefix}_#{name}"

  begin
    Rails.cache.read key_name
  rescue
    load_named_instances
    Rails.cache.read key_name
  end
end

#has_named_instances(name_method = :value) ⇒ Object 



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# File 'lib/named_instances/base.rb', line 15

def has_named_instances(name_method = :value)
  @named_instances_loaded = false
  @named_instances_name_method = name_method

  after_save {|model| model.class.load_named_instances }
  include InstanceMethods
end

#load_named_instances ⇒ Object 



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# File 'lib/named_instances/base.rb', line 61

def load_named_instances
  begin
    all.each do |instance|
      if (@named_instances_name_method.is_a? String) or (@named_instances_name_method.is_a? Symbol)
        field_name = named_instances_normalize instance.send(@named_instances_name_method)
        key_name = "#{named_instances_prefix}_#{field_name}"
      else
        key_name = @named_instances_name_method.inject(named_instances_prefix) do |key_name, name_method|
          field_name = named_instances_normalize instance.send(name_method)
          key_name + "_#{field_name}"
        end
      end

      Rails.cache.write(key_name, instance)
    end

    @named_instances_loaded = true
  rescue Exception => e
    Rails.logger.info "Named Instances: exception ignored, class = #{self}, error = #{e.inspect}"
  end
end

#name_method ⇒ Object 



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# File 'lib/named_instances/base.rb', line 27

def name_method
  @named_instances_name_method
end

#named_instances_loaded? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/named_instances/base.rb', line 23

def named_instances_loaded?
  !! @named_instances_loaded
end

#named_instances_normalize(name) ⇒ Object 



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# File 'lib/named_instances/base.rb', line 53

def named_instances_normalize name
  name.downcase.gsub(/[',]/, '').gsub(/[^a-z0-9_]+/, '_').gsub(/_$/, '')
end

#named_instances_prefix ⇒ Object 



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# File 'lib/named_instances/base.rb', line 57

def named_instances_prefix
  "named_instances_#{self}"
end