Class: RelaxDB::HasManyProxy

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/relaxdb/has_many_proxy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client, relationship, opts) ⇒ HasManyProxy

Returns a new instance of HasManyProxy.



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# File 'lib/relaxdb/has_many_proxy.rb', line 9

def initialize(client, relationship, opts)
  @client = client 
  @relationship = relationship
  @opts = opts

  @target_class = opts[:class] 
  @relationship_as_viewed_by_target = (opts[:known_as] || client.class.name.snake_case).to_s

  @children = load_children
end

Instance Attribute Details

#children ⇒ Object

Returns the value of attribute children.



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# File 'lib/relaxdb/has_many_proxy.rb', line 7

def children
  @children
end

Instance Method Details

#<<(obj) ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 20

def <<(obj)
  return false if @children.include?(obj)

  obj.send("#{@relationship_as_viewed_by_target}=".to_sym, @client)
  if obj.save
    @children << obj
    self
  else
    false
  end
end

#[](*args) ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 59

def [](*args)
  @children[*args]
end

#break_back_link(obj) ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 44

def break_back_link(obj)
  if obj
    obj.send("#{@relationship_as_viewed_by_target}=".to_sym, nil)
    obj.save
  end
end

#clear ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 32

def clear
  @children.each do |c|
    break_back_link c
  end
  @children.clear
end

#delete(obj) ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 39

def delete(obj)
  obj = @children.delete(obj)
  break_back_link(obj) if obj
end

#each(&blk) ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 71

def each(&blk)
  @children.each(&blk)
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/relaxdb/has_many_proxy.rb', line 51

def empty?
  @children.empty?
end

#first ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 63

def first
  @children[0]
end

#inspect ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 91

def inspect
  @children.inspect
end

#last ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 67

def last
  @children[size-1]
end

#load_children ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 79

def load_children
  view_name = "#{@client.class}_#{@relationship}"
  @children = RelaxDB.view(view_name, :key => @client._id)
end

#reload ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 75

def reload
  @children = load_children
end

#size ⇒ Object 



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# File 'lib/relaxdb/has_many_proxy.rb', line 55

def size
  @children.size
end