These tips may help those of you who are relatively new to Rails, or maybe even if you’re not. Common tips and tricks Look at the URL path (e.g. /users/100685/edit). Can the action and main view file be determined from CRUD/REST conventions? /:model/edit -> edit.html.slim /:model/1234 -> show.html.slim /:model/new -> new.html.slim /:model -> index.html.slim Look up the path in routes.rb, or even more useful, run rake routes Finding a controller and action responsible for a given page In development go to your server’s output, and clear the screen (Ctrl+L, for Linux, Cmd-K for OS X) Refresh the web page Back to the server’s output, scroll to the top of the output.

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This example shows you how to escape and un-escape a value to be included in a URI and within HTML. require 'cgi' # Escape data for URL query parameters name = "ruby?" value = "yes" url = "http://example.com/?" + CGI.escape(name) + '=' + CGI.escape(value) + "&var=T" # url: http://example.com/?ruby%3F=yes&var=T # Escape data for HTML url = "http://example.com/?ruby%3F=yes&var=T" html = %(<a href="#{CGI.escapeHTML(url)}">example</a>) # html: <a href="http://example.com/?ruby%3F=yes&amp;var=T">example</a> # Unescape HTML-escaped data url = CGI.

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