Class: EmeraldODM::AttrInitializer

Inherits:
Object
  • Object
show all
Defined in:
lib/emerald_odm.rb

Direct Known Subclasses

Collection

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(document) ⇒ AttrInitializer

Returns a new instance of AttrInitializer.

Parameters:

  • document (Hash, BSON::Document) —

    The document to be used to initialize the object



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# File 'lib/emerald_odm.rb', line 31

def initialize(document)
  if document.instance_of?(Hash)
    document = BSON::Document.new(document)
  elsif document.nil?
    document = BSON::Document.new
  end
  self.class.fields.each do |field|
    document_value = document[field]
    send("#{field}=", document_value)
  end
  instance_variable_set('@_document', document)
end

Instance Attribute Details

#_document ⇒ Object (readonly)

Returns the value of attribute _document.



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# File 'lib/emerald_odm.rb', line 28

def _document
  @_document
end

Class Method Details

.array_to_h(array) ⇒ Object 



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# File 'lib/emerald_odm.rb', line 65

def self.array_to_h(array)
  array.map do |item|
    if item.is_a?(AttrInitializer)
      item.to_h
    elsif item.is_a?(Array)
      array_to_h(item)
    else
      item
    end
  end
end

.fields ⇒ Array

Returns:

  • (Array) 


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# File 'lib/emerald_odm.rb', line 45

def self.fields
  public_instance_methods = self.public_instance_methods(false).grep(/=$/)
  rejected_attr_names = %w[_document]
  fields = []
  public_instance_methods.each do |attr|
    attr_name = attr.to_s.gsub('=', '')
    next if rejected_attr_names.include?(attr_name)
    fields << attr_name
  end
  fields
end

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/emerald_odm.rb', line 61

def empty?
  _document.nil? || _document.empty?
end

#nil? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/emerald_odm.rb', line 57

def nil?
  _document.nil? || _document.empty?
end

#to_h ⇒ Object 



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# File 'lib/emerald_odm.rb', line 77

def to_h
  hash = {}
  known_fields = self.class.fields
  unknown_fields = _document.keys - known_fields
  unknown_fields.reject! { |field| field.start_with?('_') }
  known_fields.each do |field|
    value = send(field)
    if value.is_a?(AttrInitializer)
      hash[field] = value.to_h
    elsif value.is_a?(Array)
      hash[field] = self.class.array_to_h(value)
    else
      hash[field] = value
    end
  end
  unknown_fields.each do |field|
    value = _document[field]
    hash[field] = value
  end

  hash
end