Teach the request spec file name convention to rspec-mode

rspec-mode-request-spec-support.el

(defadvice rspec-spec-file-for (around request-spec-support (a-file-name) activate)
  (let ((file ad-do-it))
    (setq ad-return-value
          (cond ((file-exists-p file)
                 file)
                ((string-match "\\`\\(.*/spec/\\)controllers\\(/.+\\)_controller\\(_spec\\.rb\\)\\'" file)
                 (concat (match-string 1 file)
                         "requests"
                         (match-string 2 file)
                         (match-string 3 file)))
                (t
                 file)))))

(defadvice rspec-target-file-for (around request-spec-support (a-spec-file-name) activate)
  (cond ((string-match "\\`\\(.*/spec/\\)requests\\(/.+\\)\\(_spec\\.rb\\)\\'" a-spec-file-name)
         (ad-set-arg 0
                     (concat (match-string 1 a-spec-file-name)
                             "controllers"
                             (match-string 2 a-spec-file-name)
                             "_controller"
                             (match-string 3 a-spec-file-name)))))
  ad-do-it)