Path from string with parameter

Question

I need a good way to create a set of Rails 3 paths from an array, in the link_to helper.

I have:

TITLES = ['foo', 'bar', 'baz']
TITLES.each do |t|
  = link_to t, (.....path....)

This way i need to construct a set of paths:

foo_super_users_path(user)
bar_super_users_path(user)
baz_super_users_path(user)

As you can see, i need to add same prefix _super_users for every single path, and pass user object. As the final result, i need something like:

link_to t, foo_super_users_path(user)
link_to t, bar_super_users_path(user)
link_to t, baz_super_users_path(user)

Your suggestions are really appreciated.

This maybe similar to what you are looking for: stackoverflow.com/questions/2792946/… — Chong Yu
– Chong Yu, Commented Apr 16, 2013 at 17:43

Michal Macejko · Accepted Answer · 2016-03-11 18:14:35Z

10

Instead eval use public_send

TITLES.each do |t|
  = link_to t, public_send("#{t}_super_users_path", user)

edited Mar 11, 2016 at 18:14

answered Jan 16, 2015 at 14:29

Michal Macejko

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1 Comment

nazar kuliyev Over a year ago

public_send("#{t}_super_users_path",user)

user946611 · Accepted Answer · 2013-04-16 17:40:22Z

7

How about

TITLES.each do |t|
  = link_to t, eval("#{t}_super_users_path(user)")

answered Apr 16, 2013 at 17:40

user946611

1 Comment

netwire Over a year ago

i wouldn't recommend using eval ever, just google it. lots of bad results can happen

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