Module: MongoPersist

Included in:
Customer, Order, OrderProduct, Product
Defined in:
lib/mongo_persist/base.rb

Defined Under Namespace

Modules: ClassMethods

Constant Summary collapse

NIL_OBJ = 
99999

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#mongo_id ⇒ Object

Returns the value of attribute mongo_id.



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# File 'lib/mongo_persist/base.rb', line 24

def mongo_id
  @mongo_id
end

Class Method Details

.included(mod) ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 88

def self.included(mod)
  super(mod)
  mod.send(:include,FromHash)
  mod.send(:extend,ClassMethods)
end

Instance Method Details

#can_mongo_convert? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mongo_persist/base.rb', line 65

def can_mongo_convert?
  true
end

#from_mongo_hash(h) ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 59

def from_mongo_hash(h)
  h = h.map_value { |v| v.safe_to_mongo_object }
  from_hash(h)
end

#mongo_addl_attributes ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 29

def mongo_addl_attributes
  []
end

#mongo_attributes ⇒ Object

can be overriden by class. If not, assumes that all instance variables should be saved.



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# File 'lib/mongo_persist/base.rb', line 26

def mongo_attributes
  (instance_variables.map { |x| x[1..-1] } - ['mongo','mongo_id']).select { |x| respond_to?(x) }
end

#mongo_child_attributes ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 32

def mongo_child_attributes
  (mongo_attributes - self.class.mongo_reference_attributes + mongo_addl_attributes).uniq
end

#new_hashx(attr, h, obj) ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 38

def new_hashx(attr,h,obj)
  if obj.can_mongo_convert?
    h.merge(attr => obj.to_mongo_hash) 
  else
    h
  end
rescue
  return h
end

#to_mongo_hash ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 47

def to_mongo_hash
  res = mongo_child_attributes.inject({}) do |h,attr| 
    obj = send(attr)
    #raise "#{attr} is nil" unless obj
    new_hashx(attr,h,obj)
  end.merge("_mongo_class" => self.class.to_s)
  klass.mongo_reference_attributes.each do |attr|
    val = send(attr)
    res[attr] = val.to_mongo_ref_hash if val
  end
  res
end

#to_mongo_ref_hash ⇒ Object 



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# File 'lib/mongo_persist/base.rb', line 35

def to_mongo_ref_hash
  {'_mongo_class' => klass.to_s, '_id' => mongo_id}
end