ROR + Replace the last character by detecting it using ruby code by another character

Question

Is it possible to detect the last character of string in ruby on rails and replace it by "". Explanation :: Suppose I have string as "demo-" then i have to check its last character, If it is "-" then replace it by "", otherwise no action should be taken.

Example - Code ::

search_text.downcase! if !search_text.nil?

now if seach_text have value as "demo-" then change it to "demo" by replacing "-".

Thanks in Advance !!!

Answer 1

try the following

text.chop! if text[text.length-1,1] == "-"

text.chop! removes the last character and saves it to the same object

Answer 2

> a = "abc-"
=> "abc-"
>> a.chop! if a[-1] == 45 # if last character is a minus sign chop it off
=> 45
>> a
=> "abc"

Answer 3

Much simpler:

text.chomp!('-')

chomp already includes the if condition: if the character exists at the end of the string, it is removed.