subdomain_of?

subdomain_of?(other)

Instance Public methods

Returns true if other is a subdomain.

Example:

domain = Resolv::DNS::Name.create("y.z")
p Resolv::DNS::Name.create("w.x.y.z").subdomain_of?(domain) #=> true
p Resolv::DNS::Name.create("x.y.z").subdomain_of?(domain) #=> true
p Resolv::DNS::Name.create("y.z").subdomain_of?(domain) #=> false
p Resolv::DNS::Name.create("z").subdomain_of?(domain) #=> false
p Resolv::DNS::Name.create("x.y.z.").subdomain_of?(domain) #=> false
p Resolv::DNS::Name.create("w.z").subdomain_of?(domain) #=> false

Links:

https://github.com/ruby/ruby/blob/4388d98671c7b798500fc622eb7ee903462989ab/lib/resolv.rb#L1237

doc_ruby_on_rails

2015-05-05 13:59:16

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