// CanonicalParams returns the list of parameter names needed to build the canonical href to the
// resource. It returns nil if the resource does not have a canonical action.
func CanonicalParams(r *design.ResourceDefinition) []string {
var params []string
if ca := r.CanonicalAction(); ca != nil {
if len(ca.Routes) > 0 {
params = ca.Routes[0].Params()
}
for i, p := range params {
params[i] = Goify(p, false)
}
}
return params
}
