Method QueryParams

expr/http_endpoint.go:167–197

QueryParams computes a mapped attribute containing the subset of e.Params that describe query parameters.

()

// QueryParams computes a mapped attribute containing the subset of e.Params
// that describe query parameters.
func (e *HTTPEndpointExpr) QueryParams() *MappedAttributeExpr {
	obj := Object{}
	v := &ValidationExpr{}
	pp := make(map[string]struct{})
	for _, r := range e.Routes {
		for _, p := range r.Params() {
			pp[p] = struct{}{}
		}
	}
	pat := e.Params.Attribute() // need "attribute:name" style keys
	for _, at := range *(pat.Type.(*Object)) {
		found := false
		for n := range pp {
			if n == at.Name {
				found = true
				break
			}
		}
		if !found {
			obj.Set(at.Name, at.Attribute)
			// when looking for required attributes we need the unmapped keys
			// (i.e. without the "attribute:name" syntax)
			attName := strings.Split(at.Name, ":")[0]
			if e.Params.IsRequired(attName) {
				v.AddRequired(attName)
			}
		}
	}
	at := &AttributeExpr{Type: &obj, Validation: v}
	return NewMappedAttributeExpr(at)
}

// Prepare computes the request path and query string parameters as well as the
// headers and body taking into account the inherited values from the service.