Rails helper method to display email with sub mask asterisk

Question

How to write like a helper method for email address to display with sub mask asterisk.

If user email address is like "john.a@stackoverflow.com", But in view I want to display joh***@***.com

<%= sub_masked_email("john.a@stackoverflow.com") %>
##joh***@***.com

Did you find an answer? I am struggling with this problem too — Juan Rivillas, Oct 28 '16 at 13:03

score 3 · Answer 1 · answered May 31 '19 at 00:28

So you can write a helper method which can be reused multiple time by calling it on any string. Here is what I came up with below:

helper_method

def sub_masked_email(string)
  string.gsub(/(?<=.{2}).*@.*(?=\S{2})/, '****@****')
end

calling it on any string

sub_masked_email("john.a@stackoverflow.com")

output

"jo*****@****om"

So this method shows the first two letters and shows the last two letters and replaces all other text with ****@****

Just a pointer to what you need and can still be better than this.

1 Answers1