Convert existing html.erb to Haml

Question

I have a rails project, the views only consist with HTML.ERB files, my client wants to convert ERB to HAML. I have too many views file. It's taking a huge amount of time to convert file by file. So that any simply way I can convert HTML to haml? I installed haml plugin under my project.

score 103 · Answer 1 · edited Sep 26 '11 at 04:04

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You can use from the command line html2haml

html2haml your_erb_file new_haml_file

If you want to convert all your files in one go, look at this article : http://shifteleven.com/articles/2008/06/08/converting-erb-to-haml-snippet

edited Sep 26 '11 at 04:04

Michael Durrant

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answered Feb 11 '10 at 11:56

Mike

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According to the [latest html2haml source code](https://github.com/haml/html2haml), html2haml "is in the process of being extracted from the haml gem." – David J. Jun 15 '12 at 14:06
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now a [separate gem](https://github.com/haml/html2haml). looks like the current build isn't passing too. – Eric H. Feb 26 '14 at 15:49
I'm not too sure what the implications of the above two comments are supposed to be. I decided to give the command line `html2haml` a shot and it seems to work fine. – Jason Swett Jul 11 '15 at 18:38

score 28 · Accepted Answer · edited Jun 26 '19 at 20:47

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There you go: http://html2haml.heroku.com/

EDIT: Moved to https://html2haml.herokuapp.com/

edited Jun 26 '19 at 20:47

Jared Beck

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answered Feb 11 '10 at 07:47

mikewilliamson

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if I have html image tag – Mahmoud Khaled Mar 18 '12 at 17:31
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This is not a 'bad' answer, but it should not be accepted as the best answer. The command line tool (below) is better. – David J. Jun 15 '12 at 13:50
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Please read the post, he said he didn't want to convert each individual file. – JackHasaKeyboard Dec 31 '15 at 01:37

bevanb · Answer 3 · 2012-07-13T16:15:09.940

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http://www.htmltohaml.com

A more user-friendly alternative to the selected answer.

edited Jul 13 '12 at 16:15

answered Jul 12 '12 at 23:25

bevanb

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User-friendly for small conversions, but a giant pain for doing a full app... – iconoclast May 13 '20 at 03:30

score 14 · Answer 4 · answered Sep 29 '13 at 06:30

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David Leung provides this gem on github that installs two rake tasks.

With erb2haml, you can easily convert an entire project from erb to haml with either rake haml:convert_erbs or rake haml:replace_erbs.

answered Sep 29 '13 at 06:30

IAmNaN

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score 14 · Answer 5 · answered Oct 20 '15 at 03:51

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On the haml-rails git page, it provides the cli command to do convert all erb to haml right in your project.

add gem "haml-rails" to your Gemfile

run: rake haml:erb2haml

answered Oct 20 '15 at 03:51

aviemet

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So easy, and WAY better than pulling in another gem IMO. – labyrinth Aug 26 '16 at 21:01

Kaleem Ullah · Answer 6 · 2016-09-17T07:58:14.580

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very simple

in your Gemfile add

gem "erb2haml", :group => :development

then run bundle install

for Converting *.erb to *.haml keeping original files do:

rake haml:convert_erbs

for Converting *.erb to *.haml replacing original files do:

rake haml:replace_erbs

it'll search all the erb files in project and convert to haml.

For shorthand: use on-line converter

http://www.htmltohaml.com

edited Sep 17 '16 at 07:58

answered Sep 15 '15 at 08:39

Kaleem Ullah

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EmFi · Answer 7 · 2010-02-11T22:55:11.340

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EDIT: html2haml does work as advertised, however you must use version obtained from the current master branch of the haml github repoistory.

The version of html2haml included with the haml gem currently available from rubygems is no good. This is the version you will get if you were to do gem install haml right now. Using the version supplied with the gem will result in invalid haml, as it cannot process ruby properly.

edited Feb 11 '10 at 22:55

answered Feb 11 '10 at 19:48

EmFi

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Just wanted to add that as of now (2011/7/21), the haml gem's html2haml works. However, you do have to `gem install hpricot` and `gem install ruby_parser` on top of haml. If you try to do an erb->haml conversion, it'll prompt you to install these gems. – Eric Hu Jul 21 '11 at 21:27

score 1 · Answer 8 · answered Apr 26 '13 at 00:37

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html2haml is now in the html2haml gem, so you can use:

$ gem install html2haml
$ html2haml path/to/yourfile.html path/to/yourfile.haml

answered Apr 26 '13 at 00:37

JobJob

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the application-wide answer is what is needed, not individual files. no one wants to type out individual files. it's only one step above doing it manually. an application-wide task will handle individual files. – ahnbizcad Jul 27 '14 at 10:45

score 1 · Answer 9 · edited Apr 13 '17 at 12:22

Way late to the game here, but this post still flies high in the Google when searching for similar solutions.

Install the html2haml gem, pop into your app/views directory and give this a try:

find ./ -name '*.erb' -exec html2haml -e {} {}.haml \;
find ./ -name "*.erb.haml" -exec sh -c 'mv "$1" "${1%.erb.haml}.haml"' _ {} \;
find ./ -name '*.erb' -exec rm {} \;

The flaw in this solution is that it doesn't retain revision history from your old .erb files to your new .haml files. But at times where that revision history of those view files isn't a big deal, this solution has served me pretty well.

Also, be sure to watch for any errors in the html2haml line before you delete the old .erb files.

Credit due to this Ask Ubuntu post for the renaming line

Convert existing html.erb to Haml

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