<% source.strains.each_with_index do |strain, j| %>
<% if (j == (source.strains.size - 1)) %>
<font size="3">Strain <%= strain[0].appendix %> </font>
<% end %>
<% end %>
I need to get output as
If j value is last one of a loop, th开发者_StackOverflow中文版en i need to print first value of loop (j[0]). Kindly suggest me or correct above script.
Looks like your code is the same as
<font size="3">Strain <%= source.strains.last[0].appendix %> </font>
(Without any loop)
Check out Array#last
But even if you didn't know about last
method, making a loop to access last element in collection is kinda weird. You can, at least, do collection[collection.size - 1]
.
on comment
Then why're you doing strain[0]
instead of source.strains[0]
? source.strains
is your collection and strain
is just a current element in the loop. I thought strain
is some kind of array too.
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