Query Parameters

Query paramaters are a defined set of paramaters attached to the end of a URL. They are extensions of the URL that are used to help define specific content or actions based on the data being passed.

For example, the following query string specifies a query parameter named name with a value of John:

Additional parameters can be added by using the & character:

Decoding Query Parameters

Much like form data, query parameters can be decoded from the incoming http.Request into a struct type for statically typed access and validation using the generic function:

One can use the json struct tags to define the names of the valid query parameters.

The following is an example of a Loader that decodes query parameters and uses them to search for users in a database, returning the results: