Module: Ixtlan::Models::UpdateChildren

Defined in:
lib/ixtlan/models/update_children.rb

Instance Method Summary collapse

Instance Method Details

#update_children(new_children, old_children_sym) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
# File 'lib/ixtlan/models/update_children.rb', line 5

def update_children(new_children, old_children_sym)
  # get the dm-core/collection and its model
  old_children = send(old_children_sym)
  model = old_children.model

  # make sure we have an array
  if new_children.is_a?(Array)
    # ids of new children
    new_ids = new_children.collect { |v| v.to_i }
  else
    new_children = if new_children.nil?
                     []
                   else
                     new_children[new_children.keys[0]]
                   end
    new_children = [new_children] unless new_children.is_a? Array

    # ids of new children
    new_ids = new_children.collect { |v| v[:id].to_i }
  end

  # delete obsolete old children
  old_children.select do |g|
    !(new_ids.member? g.id)
  end.each do |g|
    old_children.delete(g)
  end

  # add missing new children
  old_ids = old_children.collect { |g| g.id }
  new_ids.each do |gid|
    old_children << model.get!(gid)  unless old_ids.member? gid
  end
end

#update_restricted_children(new_children, old_children_sym, allowed_children) ⇒ Object 



40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
# File 'lib/ixtlan/models/update_children.rb', line 40

def update_restricted_children(new_children, old_children_sym, allowed_children)
  # get the dm-core/collection and its model
  old_children = send(old_children_sym)
  model = old_children.model

  # make sure we have an array
  new_children = if new_children.nil?
                   []
                 else
                   new_children[new_children.keys[0]]
                 end
  new_children = [new_children] unless new_children.is_a? Array

  # ids of new children
  new_ids = new_children.collect { |v| v[:id].to_i }
  # ids of allowed children
  allowed_ids = allowed_children.collect { |g| g.id }

  # delete obsolete and allowed old children
  set = old_children.select do |g|
    !(new_ids.member? g.id) && (allowed_ids.member? g.id)
  end
  set.each do |g|
    old_children.delete(g)
  end

  # add missing and allowed new children
  old_ids = old_children.collect { |g| g.id }
  new_ids.each do |gid|
    old_children << model.get!(gid) if !old_ids.member?(gid) && allowed_ids.member?(gid)
  end
end