CODEWITHSUNDEEP
ruby-on-rails-3vim
Vyacheslav Loginov
Vyacheslav Loginov

Reputation: 3216

Vim go to ruby class declaration

I want to follow from 

class ApplicationController < ActionController::Base

to

/home/slavik/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.0.rc6/lib/action_controller/base.rb

and look to commented reference of possible usage this class

Upvotes: 3

Views: 794

Answers (3)

Abdo
Abdo

Reputation: 14051

ripper-tags sounds great but is having issues as of today (November 2013). I ended up using exuberant ctags (with a few tricks)

1- install exuberant ctags. If you're using osx, this article shows a little trick: http://www.runtime-era.com/2012/05/exuberant-ctags-in-osx-107.html

2- If you only wish to include the ctags for the files in your directory only, run this command in your directory: 

ctags -R

This will create a "tags" file for you.

3- If you wish to include the ctags for your gems (this has been really helpful for me with RubyMotion and local gems that I have developed), do the following:

ctags --exclude=.git --exclude='*.log' -R * `bundle show --paths`

credit: https://coderwall.com/p/lv1qww (Note that I removed the -e option which generates tags for emacs instead of vim)

4- Add the following line to your ~/.vimrc

set autochdir 
set tags+=./tags;

(Why the semi colon: http://vim.wikia.com/wiki/Single_tags_file_for_a_source_tree )

5- Go to the word you'd like to follow and hit ctrl+] . hit ctrl+o to go back (https://stackoverflow.com/a/53929/226255)

Upvotes: 1

lzap
lzap

Reputation: 17174

There are couple of issues with ctags which has pretty old and ugly parser:

  • Ctags doesn't deal with: module A::B
  • Ctags doesn't tag (at least some of) the operator methods like ==
  • Ctags doesn't support qualified tags, -type=+
  • Ctags doesn't output tags for constants or attributes.

I would recommend better project ripper-tags based on official Ruby parser called Ripper which is included in Ruby. It is fast and accurate: https://github.com/tmm1/ripper-tags

You can also install gem-ripper-tags to have tags files automatically generated after gem installation: https://github.com/lzap/gem-ripper-tags

Please note that these days, August 2013, there is a big refactoring of ripper-tags which can lead to change of command line options or gem-ripper-tags interface. If things are not working, update both gems in couple of days and read help screen to learn new options.

Upvotes: 2

lucapette
lucapette

Reputation: 20724

Yes, there is at least one way. You can use exuberant ctags in combination with the tags option of Vim. Pratically, you have to execute ctags in the /home/slavik/.rvm/gems/ruby-1.9.2-p290/gems/ like :

ctags -R tags

See ctags --help if you want to dig into tags customization. Then you have to add this file to your tags path in vim. Using something like the following:

:set tag+=/home/slavik/.rvm/gems/ruby-1.9.2-p290/gems/tags

In order to understand how powerful this vim features is take a look at Browsing_programs_with_tags.

Upvotes: 3

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