Question:
In Rails, how to read a HAML file into an HTML-code-element?
Recently I encountered a use-case which asked me to read a HAML file into an HTML-code-element.
After a bit of thought I decided it was similar to this question:
In Ruby, how to read a file into a String object?
I knew this because it is easy to render any Ruby string with ERB syntax.
I typed that question into Google:
http://www.google.com/search?q=In+Ruby,+how+to+read+a+file+into+a+String+object
I found this syntax example:
mystr = IO.binread("/my/path/to/file")%hr/
%h2 Challenge 10
- cc1018 = "#{Rails.root}/app/views/code_challenge2015_1018"
Your challenge: understand what this HAML does:
%pre
%code.haml
= IO.binread("#{cc1018}/demo10.haml")
The above HAML is deployed at this URL:
%br/
%a(href='https://dojo650.herokuapp.com/app/demo10.html' target='x')
https://dojo650.herokuapp.com/app/demo10.html
%br/
%h2 Challenge 10 Questions:
%ul
%li Which version of D3 is used?
%li Where does the Rickshaw JS come from?
%li What kind of element does the chart reside in?
%li How to tell Rickshaw where to place the chart?
%li How to change size of chart?
%li How to change color of chart?
%li How is area chart different than line chart?
code_challenge2015_1018
The next step in this idea is to ask IO.binread() to read from a git-repository rather than a folder.
This enhancement would allow my Rails app to display the most recent HAML file rather than an artifact from the past.