[SOLVED] How to put Ruby Variable inside of Regex Code

Issue

I'm running the grep method to filter by pattern matching. This is an example code.

companies.grep /city/

However, ruby isn't allowing me to input the area_code withing the block inside the rails view. Instead, I'm forced to hardcode it like so:

companies.grep /miami/

Keep in mind, city is a variable. For example,

city = miami

However, it updates. Do you know how can I pass a variable through the grep method?

Also, I tried companies.grep /#{city}/, but it didn't work

Solution

companies.grep /#{city}/
# or
companies.grep Regexp.new(city)

In case of simple alpha-numeric query, this should suffice; but it is better to get into practice of escaping those, if you don't intend to have regexp operators. Thus, better version:

companies.grep /#{Regexp.escape city}/
# or
companies.grep Regexp.new(Regexp.escape city)

Answered By - Amadan