Rails + REGEX: Extract name from email domain

Question

I'm creating a new record in Company table based on the logic below:

if company.nil?
  Company.create!(name: User.get_company_name(self.email)), domain: User.get_domain(self.email))
end

I want to extract the name of the domain to place in the Company table. Ie. If I have [email protected], I want to use regular expressions to substitute in 'Nike' as the company name. Or, in the case of [email protected], I'd want the company name to be 'Ryandrake'.

I already have this method I am using to extract the domain, but haven't managed to edit it to extract the name:

def self.get_domain(email_address)
  email_address.gsub(/.+@([^.]+.+)/, '\1') // Returns 'nike.com' or 'ryandrake.com'
end

Any help with modifying the method above to just return 'Nike' or 'Ryandrake' would be super helpful!

Pavan · Accepted Answer · 2015-06-29 05:20:18Z

1

You can do just email_address[/(?<=@)[^.]+/] to get the desired name.

def self.get_domain(email_address)
  email_address[/(?<=@)[^.]+/]
end

Example:

"[email protected]"[/(?<=@)[^.]+/]
 => "gmail"

DEMO

edited Jun 29, 2015 at 5:20

answered Jun 29, 2015 at 5:12

Pavan

33.6k8 gold badges53 silver badges78 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Ryan Drake Over a year ago

Thanks Pavan! This is the simplest and most elegant solution I was after.

Anshul Rai · Accepted Answer · 2015-06-29 05:02:47Z

0

Use this regex to capture the letters between @ and . : (?<=@)(.*)(?=\.) and then replace with whole string.

DEMO

or

gsub(/.+(?<=@)(.*)(?=\.).+/, '\1')

DEMO

answered Jun 29, 2015 at 5:02

Anshul Rai

7827 silver badges22 bronze badges

Comments

Avinash Raj · Accepted Answer · 2015-06-29 05:03:34Z

0

Put the capturing group only to capture the word chars present next to @. .+ inside the capturing group helps to capture also the .com part also.

email_address.gsub(/.+@([^.]+).+/, '\1')

or

email_address.gsub(/.+@([^.]+)\..+/, '\1')

answered Jun 29, 2015 at 5:03

Avinash Raj

175k32 gold badges247 silver badges289 bronze badges

Collectives™ on Stack Overflow

Rails + REGEX: Extract name from email domain

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related