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Tag Archives: Ruby

Ruby on Rails: Generate dropdown menu from JSON key value pair

March 19, 2013 4:39 pm / Albertech.net

If you want to generate a dropdown selector menu from a JSON using Ruby on Rails, you can do it with two lines of code (three including the JSON string).

In your controller, use the JSON parse method to convert the string into a hash.

myjsonstring = '{"1":"Test1","2":"Test2","3":"Test3"}'
@myvar = JSON.parse(myjsonstring)

In your view,

<%= f.collection_select myfieldname, @myjsonstring, :mykey, :myvalue %>

The end result will look like the following with options values set to 1, 2, and 3.
selectortest

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Posted in: Ruby on Rails / Tagged: json, ruby

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