GX4009: action method cannot be invoked from the client

Cause

An on: directive invokes an action whose HTTP method the browser adapter cannot send.

cart/Button.gx

package cart

import "app/cart/route"

<button on:click={route.Add{}}>Add</button>

cart/cart.go

package cart

import (
	"github.com/alternayte/gx"
	"app/cart/route"
)

var Add = gx.Action(func(c *gx.Ctx, in route.Add) error { return nil })

cart/route/route.go

package route

import "github.com/alternayte/gx"

type Add struct {
	gx.Route `OPTIONS /cart/add`
}

gx check reports:

gx check

cart/Button.gx:5:9: GX4009: method OPTIONS of "Add" cannot be invoked from the client

Use GET, POST, PUT, PATCH or DELETE in the route tag.