[SOLVED] How to construct URI with query arguments from hash in Ruby

How to construct URI with query arguments from hash in Ruby

How to construct URI object with query arguments by passing hash?

I can generate query with:

URI::HTTPS.build(host: 'example.com', query: "a=#{hash[:a]}, b=#{[hash:b]}")

which generates

https://example.com?a=argument1&b=argument2

however I think constructing query string for many arguments would be unreadable and hard to maintain. I would like to construct query string by passing hash. Like in example below:

hash = {
  a: 'argument1',
  b: 'argument2'
  #... dozen more arguments
}
URI::HTTPS.build(host: 'example.com', query: hash)

which raises

NoMethodError: undefined method `to_str' for {:a=>"argument1", :b=>"argument2"}:Hash

Is it possible to construct query string based on hash using URI api? I don't want to monkey patch hash object...

Solution

If you have ActiveSupport, just call '#to_query' on hash.

hash = {
  a: 'argument1',
  b: 'argument2'
  #... dozen more arguments
}
URI::HTTPS.build(host: 'example.com', query: hash.to_query)

=> https://example.com?a=argument1&b=argument2

If you are not using rails remember to require 'uri'