I'm getting an array back from redis (trhough a controller for my projects) which I need to destructure in my product view.
Array (showing 2 results, but it can many more):
["project-5", "project-4"]
The numbers (5, 4) are my project id's (@project.id) which I need to subtract to use in a .each do function.
All that I can find for it, are destructure solutions for multiple variables. But here I only have 1 variable.
Can anyone help me out with how I can isolate the product id out of this array?
You can use match method to get the ids with the help of regex. Assuming array consists of your projetcs with id-s 3 and 44 then a one-liner would be:
2.0.0-p353 :091 > array.map{|el| el.match(/\d+$/)[0]}
=> ["3", "44"]
If you sure need to use .each do then
array.each do |el|
el.match(/\d+$/)[0]
end
You can also use method gsub with regex to replace everything except the id inside string with an empty string, so only id-part of the string will remain.
One-liner for this (array = ["proj3ct-3", "project-1567"]):
2.0.0-p353 :040 > array.map {|el| el.gsub(/(.*\-)[^\d]*/, "")}
=> ["3", "1567"]
.each do similarly to previous example with match.
EDIT: If you want the do-block to return the array already in formatted form then you should use bang-method from gsub like this: el.gsub!(/(.*\-)[^\d]*/, "") This will also make changes in elements. Non-bang methods only return changed values without altering them.
Just in case you don't know and would like to test/analyze your regex then this is a good place to do it- I've been using it for quite a while. Also a good place to recheck some basics is here