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https://github.com/IanKeen/IKRouter

URLScheme router than supports auto creation of UIViewControllers for associated url parameters to allow creation of navigation stacks
https://github.com/IanKeen/IKRouter

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URLScheme router than supports auto creation of UIViewControllers for associated url parameters to allow creation of navigation stacks

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# IKRouter



## What does it do?

Once you have made your `UIViewController`s conform to `Routable` you can register them with the parameters that they represent in your registered url-scheme routes. `IKRouter` is then able to create an array of `UIViewController`s for you to display when a valid url is handled. All you need to do then is display them!



`IKRouter` can also handle routes in the traditional way by simply registering a route and handling it with a funciton/closure and the two methods can also be used together.



An example route is:

```

myapp://project/:projectId/item/:itemId

```

Note that routes must include the scheme (`myapp://`), url parameters need to be prefixed with a colon (`:`) and query strings dont need to be included when registering a route as they are included when the route is matched.



## Using Routables

To use the `Routable`s to automatically create your UI stack



1. Make any `UIViewController` that can be linked to a route parameter conform to `Routable`.

2. Register these with your `IKRouter` instance.

3. Register the routes that _use_ those parameters.

4. Handle the chain of `UIViewController`s via the `routableHandler` closure/function.



## The Routable protocol

The `Routable` protocol consists of a single simple method which when give a `MatchedRoute` returns an instance of the `Routable`.



```swift

protocol Routable {

    static func instanceForRoute(route: MatchedRoute) -> Routable?

}

```



`MatchedRoute` instances provide all the details needed to pass information through to `Routables` like matched parameters and their values as well as query string.



## Routable Example

Once your `UIViewController`s are `Routable` simply do the following:



```swift

let navController = UINavigationController()

let router = IKRouter()

router

    .registerRoutableWithParameter(ProjectViewController.self, parameter: ":projectId")

    .registerRoutableWithParameter(ItemViewController.self, parameter: ":itemId")

    .registerRouteHandler("myapp://project/:projectId/item/:itemId")

    .registerRouteHandler("myapp://project/:projectId")

    .routableHandler = { match, viewControllers in

        navController.setViewControllers(viewControllers, animated: true)

    }

```



## Things to note about using Routable



* As many routes can be registered as you want in any combination as long as each one is:

    * Unique

    * Has a `Routable` registered for all parameters

* If a route comes through and there is a parameter without a `Routable` the default handler will be used (if provided)

* When registering a _route_ there is a `handler` parameter. This can be omitted when using `Routable`s.



## Non Routable Example

If you have routes which might not suit the _automatic_ functionality provided by `Routable`s you can also register individual routes with their own handlers



```swift

let router = IKRouter()

router

    .registerRouteHandler("myapp://project/:projectId/item/:itemId") { match in

        //create view controllers and show here...

        return true

    }

    .registerRouteHandler("myapp://project/:projectId/users/:userId") { match in

        //create view controllers and show here...

        return true /* return false if we didn't handle the route */

    }

```

NOTE: The handler for each route is used here (unlike above)



## UIViewController Presentation

Every app has a slightly different UI hierarchy/architecture... for this reason `IKRouter` does not provide and automatic handling of `UIViewController` presentation but instead allows you to handle that yourself. Instead I have provided a `UINavigationController` extension that you can use to display the stack in different ways.



Currently there is just a simple method that will take a stack of `UIViewController`s; push all but the last and _present_ the last item in the stack like so:



```swift

router.routableHandler = { match, viewControllers in

    navController.setViewControllersPresentingLast(viewControllers, animatedSet: true, animatedPresent: true)

}

```



If there are other means of displaying a stack you think would be useful here feel free to add an issue or pull request, both are welcome!



# Installation

Install via cocoapods by adding the following to your Podfile



```

pod "IKRouter", "~>1.0"

```



or manually by adding the source files from the IKRouter subfolder to your project.



# The rest...

There is an included app so you can see it in action.