How To: Create Haml and Slim Views

The Haml/Slim view generators were removed from Devise 1.2. Here is a tutorial how to create Haml/Slim views with Devise 1.2 or later.

Summary

rails generate devise:views

gem install html2haml
for file in app/views/devise/**/*.erb; do html2haml -e $file ${file%erb}haml && rm $file; done

gem install haml2slim
for file in app/views/devise/**/*.haml; do haml2slim $file ${file%haml}slim && rm $file; done

On Windows

rails generate devise:views

gem install html2haml
for /r app\views\devise %I in (*) do html2haml -e %I %~dpnI.haml
del /f /s /q app\views\devise\*.erb

gem install haml2slim
for /r app\views\devise %I in (*) do haml2slim %I %~dpnI.slim
del /f /s /q app\views\devise\*.haml

Explanation

Create Haml views

First you need run the generator to create the devise ERB files.

rails generate devise:views

Now we need a tool called 'html2haml' which was formely a part of the 'haml' gem but is now separate.

gem install html2haml

Now for each erb file, convert it to Haml and removing the erb if successful.

for file in app/views/devise/**/*.erb; do html2haml -e $file ${file%erb}haml && rm $file; done

Create Slim views

We use a gem called 'haml2slim' to create the Slim-views.

gem install haml2slim

As we need Haml-views to convert them to Slim-views, you need to follow the steps to create the Haml-views described above. Afterwards the views can be converted with the following command. Again, the each Haml file will be removed as a Slim file is successfully generated.

for file in app/views/devise/**/*.haml; do haml2slim $file ${file%haml}slim && rm $file; done