45 lines
1.8 KiB
Markdown
45 lines
1.8 KiB
Markdown
---
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title: "Search and Replace in multiple files with Vim"
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kind: article
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slug: search-and-replace-in-multiple-files-with-vim
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created_at: 2012-06-18
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tags:
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- Rails
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- vim
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---
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I recently learned a nice VimTrick™ when paring with [Arjan](http://arjanvandergaag.nl). We upgrade an app to Rails 3.2.6 and got the following deprecation message:
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DEPRECATION WARNING: :confirm option is deprecated and will be removed from Rails 4.0.
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Use ':data => { :confirm => 'Text' }' instead.
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Well, nothing difficult about that, but we have quite a few `:confirm` in this app.
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Firstly we checked where we used them (note we use ruby 1.9 hash syntax everywhere):
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$ ack -l "confirm:" app
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Now you have a listing of all the files that contain the `:confirm` hash key. You can leave out the `-l` option to get some context for each find.
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Now, we need to open Vim with those files:
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$ ack -l "confirm:" app | xargs -o vim
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Vim will open the first of these files. Here's a snippet of what you may find:
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= link_to "Delete", something_path, confirm: "Are you sure?"
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Now, search and replace is easy:
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:%s/confirm: ".*"/data: { & }/g
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This will surround the current confirm with the `data` hash. Just the way Rails likes it. The `&` character will be replaced with whatever text matched the search pattern.
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You could repeat this for every file manually. But, you're using Vim.
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:argdo %s/confirm: ".*"/data: { & }/g | update
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This will perform the search and replace on each of the supplied arguments (in this case the files selected with `ack`) and update (e.g. save) those files.
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Now you can quit Vim and enjoy the glory of all the disappearing deprecation warnings.
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Note: to do this with the ruby 1.8 hash syntax, just update the search and replace texts accordingly. |