Having the following array, it defines the sorting :
[300, 450, 345, 23]
And the following array, unsorted :
[
{id: 450, title: 'rand1'},
{id: 23, title: 'rand3'},
{id: 300, title: 'rand0'},
{id: 345, title: 'rand2'},
]
I'd like the first array to be a "rule" to sort my second array (probably by matching the id key).
How can i get achieve this cleanly ?
Naïve approach:
sorter = [300, 450, 345, 23]
input = [
{id: 450, title: 'rand1'},
{id: 23, title: 'rand3'},
{id: 300, title: 'rand0'},
{id: 345, title: 'rand2'},
]
input.sort do |h1, h2|
sorter.index(h1[:id]) <=> sorter.index(h2[:id])
end
#⇒ [
# {:id=>300, :title=>"rand0"},
# {:id=>450, :title=>"rand1"},
# {:id=>345, :title=>"rand2"},
# {:id=>23, :title=>"rand3"}]
or even simper:
input.sort_by { |h| sorter.index(h[:id]) }
