rails
Usefull methods?
Hi. What about adding some usefull methods to your plug in: leafs: returns only the last elements of a tree for a given knot structure: returns the given knot and all elements under the knot
Hereby a suggestion of code - it works pretty nice:
module ActiveRecord
module Acts
module Tree
module ClassMethods
def structure(knot=find(0)) #Returns an array of knot and all elements under knot
y = Array.new
y[0] = knot
if y[0].children.first then
looping(y, knot)
end
return y
end
def leafs(knot=find(0)) #Returns only the last elements of your tree under the tree object knot
@@tmp = structure(knot)
@leafs = Array.new
@@tmp.each do |i|
if not (i.children.first) then
@leafs[@leafs.size] = i
end
end
return @leafs
end
private
def looping(y, parent)
t = Array.new
t = parent.children
t.each do |i|
y[y.size] = i
if i.children.first then
looping(y, i)
end
end
end
end
end
end
end
A variant could be passing an array instead of knot as object; so that the default could be knot.root ...