Optional parameters

Hi,

I currently have a route structure that looks like this:

• Main (all routes) – Home (/:continent?) – Entity (/:country/:region/:city)

The continent path is optional. How can I achieve this with Router5? The only requirement that I have is that both / and /africa (for instance) have the same parent (Home) route. I’ve tried fiddling with absolute paths, and regexes with empty strings, but all approaches break down at some point.

[troch]

Optional parameters are not supported in router5 (a design decision), and the way to achieve it is to define two routes (one with param, one without) with a parent forwarding to the non-param one by default (using forwardTo route option).

Don’t forget to set router5 option useTrailingSlash: false for it to strip trailing slashes when building (or set it to true if you want trailing slashes to always be added).

[
	{
		name: 'section',
		path: '/',
		forwardTo: 'section.home'
	},
	{
		name: 'section.home',
		path: '/'
	},
	{
		name: 'section.subsection',
		path: '/:subsectionParam'
	}
]

In your case, something like:

[
	{
		name: 'continent',
		path: '/',
		forwardTo: 'continent.default'
	},
	{
		name: 'continent.default',
		path: '/'
	},
	{
		name: 'continent.view',
		path: '/:continent'
	}
]

[klimashkin]

Now I see, didn’t notice that in changelog, thanks! But seems it doesn’t work in that case

I have

{name: "app", path: "?:showVersion"},
{name: "app.ip", path: "/ip"},
{name: "app.ip.list", path: "/?:sort?:page"},
{name: "app.ip.item", path: "/:id", forwardTo: "app.ip.item.view"},
{name: "app.ip.item.edit", path: "/edit"},
{name: "app.ip.item.view", path: "/:version", defaultParams: {version: 'active'}},

And if I navigate to /ip/5 I get Uncaught Error: Cannot build path: '/:version' requires missing parameters { version } at Path.build$$1