Module: Mongoid::Orderable::Mixins::Helpers

Defined in:
lib/mongoid/orderable/mixins/helpers.rb

Instance Method Summary collapse

Instance Method Details

#default_orderable_field ⇒ Object 



11
12
13
 
# File 'lib/mongoid/orderable/mixins/helpers.rb', line 11

def default_orderable_field
  self.class.orderable_configs.detect {|_c, conf| conf[:default] }.try(:first) || orderable_keys.first
end

#orderable_bottom(field = nil, in_list = true) ⇒ Object 



29
30
31
32
33
34
35
 
# File 'lib/mongoid/orderable/mixins/helpers.rb', line 29

def orderable_bottom(field = nil, in_list = true)
  field ||= default_orderable_field
  f = orderable_field(field)
  max = orderable_scope(field).ne(f => nil).max(f)
  return orderable_top(field) unless max
  in_list ? max : max.next
end

#orderable_keys ⇒ Object 



7
8
9
 
# File 'lib/mongoid/orderable/mixins/helpers.rb', line 7

def orderable_keys
  Array(orderable_inherited_class.orderable_configs.try(:keys))
end

#orderable_scope(field = nil) ⇒ Object 



15
16
17
18
19
20
21
22
23
 
# File 'lib/mongoid/orderable/mixins/helpers.rb', line 15

def orderable_scope(field = nil)
  field ||= default_orderable_field

  if embedded?
    _parent.send(_association.name).send("orderable_#{field}_scope", self)
  else
    orderable_inherited_class.send("orderable_#{field}_scope", self)
  end
end

#orderable_scope_changed?(field) ⇒ Boolean

Returns:

  • (Boolean) 


25
26
27
 
# File 'lib/mongoid/orderable/mixins/helpers.rb', line 25

def orderable_scope_changed?(field)
  !orderable_scope(field).where(_id: _id).exists?
end