CODEWITHSUNDEEP
ruby-on-railsruby
Joe Yevoli
Joe Yevoli

Reputation: 11

Searching a string to find an email address in ruby

I'm trying to write code that will let me search the content submitted through a form and find the email address in the content. Below is the code, and the error message I'm receiving.

Error: undefined method `match' for {"content"=>"this is a test [email protected]"}:ActionController::Parameters

Code:

class ChallengesController < ApplicationController
  def create
    @challenge = current_user.challenges.build(challenge_params)
    challenge_params.match(/\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b/i)
    # ...
  end

  private

  def challenge_params
    params.require(:challenge).permit(:content)
  end 
end

Upvotes: 0

Views: 270

Answers (2)

Margal
Margal

Reputation: 17

I'm new to ruby so my answer may be very "amateur-ish", but sometimes the simplest ideas are the best... The way I would do this is search for index of @ sign. Then analyze each character before and after the sign until you get to blank space and save those index numbers. Use those index numbers to extract the email address from your string.

def email_address(str)
at_index = str.index('@')
temp = (at_index - 1)
while str[temp] != ' '
    temp -= 1
end
begining_index = (temp + 1)
temp = (at_index + 1)
while str[temp] != ' '
    temp += 1
end
end_index = temp
return str[begining_index..end_index]

end

Upvotes: 0

shivam
shivam

Reputation: 16506

You are applying match on a Hash.

challenge_params is a Hash. Going by the error message, this hash contains a key content which is where you want to use with match, hence rewriting the match line to:

challenge_params["content"].match(/\b[A-Z0-9\._%+-]+@[A-Z0-9\.-]+\.[A-Z]{2,4}\b/i)

Upvotes: 1

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