CGI::QueryExtension

Mixin module that provides the following:

1. Access to the CGI environment variables as methods. See documentation to the CGI class for a list of these variables. The methods are exposed by removing the leading HTTP_ (if it exists) and downcasing the name. For example, auth_type will return the environment variable AUTH_TYPE, and accept will return the value for HTTP_ACCEPT.

2. Access to cookies, including the cookies attribute.

3. Access to parameters, including the params attribute, and overloading #[] to perform parameter value lookup by key.

4. The initialize_query method, for initializing the above mechanisms, handling multipart forms, and allowing the class to be used in “offline” mode.