// BindValidRequest binds a params object to a request but only when the request is valid
// if the request is not valid an error will be returned
func (c *Context) BindValidRequest(request *http.Request, route *MatchedRoute, binder RequestBinder) error {
var res []error
// check and validate content type, select consumer
if httpkit.CanHaveBody(request.Method) {
ct, _, err := httpkit.ContentType(request.Header)
if err != nil {
res = append(res, err)
} else {
if err := validateContentType(route.Consumes, ct); err != nil {
res = append(res, err)
}
route.Consumer = route.Consumers[ct]
}
}
// check and validate the response format
if len(res) == 0 {
if str := httputil.NegotiateContentType(request, route.Produces, ""); str == "" {
res = append(res, errors.InvalidResponseFormat(request.Header.Get(httpkit.HeaderAccept), route.Produces))
}
}
// now bind the request with the provided binder
// it's assumed the binder will also validate the request and return an error if the
// request is invalid
if binder != nil && len(res) == 0 {
if err := binder.BindRequest(request, route); err != nil {
res = append(res, err)
}
}
if len(res) > 0 {
return errors.CompositeValidationError(res...)
}
return nil
}
func (v *validation) responseFormat() {
if str := v.context.ResponseFormat(v.request, v.route.Produces); str == "" {
v.result = append(v.result, errors.InvalidResponseFormat(v.request.Header.Get(httpkit.HeaderAccept), v.route.Produces))
}
}