to_query(namespace = nil) public

Returns a string representation of the receiver suitable for use as a URL query string:

{name: 'David', nationality: 'Danish'}.to_query
# => "name=David&nationality=Danish"

An optional namespace can be passed to enclose key names:

{name: 'David', nationality: 'Danish'}.to_query('user')
# => "user%5Bname%5D=David&user%5Bnationality%5D=Danish"

The string pairs “key=value” that conform the query string are sorted lexicographically in ascending order.

This method is also aliased as to_param.

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