CODEWITHSUNDEEP
htmlruby
Doug
Doug

Reputation: 53

Use Ruby to get URL parameters

I am currently using the script 

 <?php $name = $_GET ["id"]; ?>

to pull the parameter from a URL like www.example.com?id=john and then using 

 <?php echo $name ?>

when I need the variable in the code.

I now need to use Ruby instead of PHP to accomplish this task. Are there any comparable methods in Ruby on Rails?

Upvotes: 0

Views: 2016

Answers (1)

the Tin Man
the Tin Man

Reputation: 160631

Rails has all the functionality needed, but it's a steep learning curve, so maybe Sinatra would be better for what you need. In particular, Sinatra, like Rails, makes it easy to get at the parameters in a URL. See Sinatra's "Routes" documentation if you want to go that way.

Here's code to extract the parameters from a URL using Ruby and its bundled URI class:

require 'uri'
uri = URI.parse('http://www.example.com?id=john')
uri.query # => "id=john"
Hash[URI.decode_www_form(uri.query)] # => {"id"=>"john"}

You can assign the result of the last line to a variable, then use it to access any of the parameter's values via its name:

params = Hash[URI.decode_www_form(uri.query)]
params['id'] # => "john"

Upvotes: 1

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