TenancyUrlGenerator: override toRoute(), refactor (#1439)

This PR adds the `toRoute()` method override to `TenancyUrlGenerator`.
`toRoute()` now attempts to find a tenant equivalent of the passed route
(= a route with the same name as the passed one, but with the tenant
prefix) and generates URL for the tenant route. This behavior can be
bypassed using the bypass parameter, like with the `route()` method
override `TenancyUrlGenerator` had until now.

The primary reason for adding this is that Livewire v4 no longer uses
the `route()` helper (which automatically prefixes the passed route name
because of the override in `TenancyUrlGenerator`) in
`Livewire::getUpdateUri()`. Now, it uses `toRoute()`
(544aa3dfb8 (diff-e7609f8b0a60bde5a85067803d4e2f08f235c7cee9225a51ea67a85ff9a1d694R52)),
which didn't automatically swap the route for its 'tenant.'-prefixed
equivalent in tenant context (until now). So for the Livewire
integration to work with path identification, we need to override
`toRoute()` as described.

The `temporarySignedRoute()` override got removed because
`temporarySignedRoute()` calls `route()` under the hood, there's no need
to specifically override `temporarySignedRoute()`.

> Note: Browsing old convos, it seems like the `temporarySignedRoute()`
override was needed to make Livewire file uploads work with path
identification, but it's not needed anymore. TenancyUrlGenerator had
some changes since then, and now, I can't see the _exact_ reason why we
needed the override (`temporarySignedRoute()` uses `route()` under the
hood, so the only thing that should really matter is overriding
`route()`/`toRoute()`). It was likely a leftover from some older
implementation.

The `route()` override got simplified. Since `route()` uses `toRoute()`
under the hood, the `route()` override only has to have the prefixing
logic. The rest is delegated to `toRoute()`.

> Note: Even though we override `toRoute()` now which `route()` uses for
generating the URLs, we still need to override `route()` for its
`$this->routes->getByName($name)` call to receive the prefixed name. For
example, if `route()` wasn't overridden, and we only had one route:
`tenant.foo` (no central `foo` route), and we'd call `route('foo')`,
we'd get an exception saying that route "foo" wasn't found, even if
automatic route name prefixing was enabled and `toRoute()` was
overridden. With the `route()` override, `route('foo')` acts as if we
passed 'tenant.foo' instead of 'foo'.

Comments in TenancyUrlGenerator and UrlGeneratorBootstrapper got updated
to be more accurate. All _intentionally_ affected methods are listed in
TenancyUrlGenerator's docblock.

---------

Co-authored-by: Samuel Stancl <samuel@archte.ch>

src/Bootstrappers/UrlGeneratorBootstrapper.php

@@ -16,7 +16,7 @@ use Stancl\Tenancy\Resolvers\PathTenantResolver;
 /**
  * Makes the app use TenancyUrlGenerator (instead of Illuminate\Routing\UrlGenerator) which:
  * - prefixes route names with the tenant route name prefix (PathTenantResolver::tenantRouteNamePrefix() by default)
- * - passes the tenant parameter to the link generated by route() and temporarySignedRoute() (PathTenantResolver::tenantParameterName() by default).
+ * - passes the tenant parameter (PathTenantResolver::tenantParameterName() by default) to the link generated by the affected methods like route() and temporarySignedRoute().
  *
  * Used with path and query string identification.
  *

src/Overrides/TenancyUrlGenerator.php

@@ -22,16 +22,18 @@ use Stancl\Tenancy\Resolvers\RequestDataTenantResolver;
  *       - Automatically passing ['tenant' => ...] to each route() call -- if TenancyUrlGenerator::$passTenantParameterToRoutes is enabled
  *         This is a more universal solution since it supports both path identification and query parameter identification.
  *
- *   - Prepends route names passed to route() and URL::temporarySignedRoute()
- *     with `tenant.` (or the configured prefix) if $prefixRouteNames is enabled.
+ *   - Prepends route names with the tenant route name prefix ('tenant.' by default,
+ *     configurable at tenant_route_name_prefix under PathTenantResolver) if $prefixRouteNames is enabled.
  *     This is primarily useful when using route cloning with path identification.
  *
- * To bypass this behavior on any single route() call, pass the $bypassParameter as true (['central' => true] by default).
+ * Affected methods: route(), toRoute(), temporarySignedRoute(), signedRoute() (the last two via the route() override).
+ *
+ * To bypass this behavior on any single affected method call, pass the $bypassParameter as true (['central' => true] by default).
  */
 class TenancyUrlGenerator extends UrlGenerator
 {
     /**
-     * Parameter which works as a flag for bypassing the behavior modification of route() and temporarySignedRoute().
+     * Parameter which works as a flag for bypassing the behavior modification of the affected methods.
      *
      * For example, in tenant context:
      * Route::get('/', ...)->name('home');
@@ -44,12 +46,12 @@ class TenancyUrlGenerator extends UrlGenerator
      * Note: UrlGeneratorBootstrapper::$addTenantParameterToDefaults is not affected by this, though
      * it doesn't matter since it doesn't pass any extra parameters when not needed.
      *
-     * @see UrlGeneratorBootstrapper
+     * @see Stancl\Tenancy\Bootstrappers\UrlGeneratorBootstrapper
      */
     public static string $bypassParameter = 'central';
 
     /**
-     * Should route names passed to route() or temporarySignedRoute()
+     * Should route names passed to the affected methods
      * get prefixed with the tenant route name prefix.
      *
      * This is useful when using e.g. path identification with third-party packages
@@ -59,12 +61,12 @@ class TenancyUrlGenerator extends UrlGenerator
     public static bool $prefixRouteNames = false;
 
     /**
-     * Should the tenant parameter be passed to route() or temporarySignedRoute() calls.
+     * Should the tenant parameter be passed to the affected methods.
      *
      * This is useful with path or query parameter identification. The former can be handled
      * more elegantly using UrlGeneratorBootstrapper::$addTenantParameterToDefaults.
      *
-     * @see UrlGeneratorBootstrapper
+     * @see Stancl\Tenancy\Bootstrappers\UrlGeneratorBootstrapper
      */
     public static bool $passTenantParameterToRoutes = false;
 
@@ -105,8 +107,18 @@ class TenancyUrlGenerator extends UrlGenerator
     public static bool $passQueryParameter = true;
 
     /**
-     * Override the route() method so that the route name gets prefixed
-     * and the tenant parameter gets added when in tenant context.
+     * Override the route() method to prefix the route name before $this->routes->getByName($name) is called
+     * in the parent route() call.
+     *
+     * This is necessary because $this->routes->getByName($name) is called to retrieve the route
+     * before passing it to toRoute(). If only the prefixed route (e.g. 'tenant.foo') is registered
+     * and the original ('foo') isn't, route() would throw a RouteNotFoundException.
+     * So route() has to be overridden to prefix the passed route name, even though toRoute() is overridden already.
+     *
+     * Only the name is taken from prepareRouteInputs() here — parameter handling
+     * (adding tenant parameter, removing bypass parameter) is delegated to toRoute().
+     *
+     * Affects temporarySignedRoute() and signedRoute() as well since they call route() under the hood.
      */
     public function route($name, $parameters = [], $absolute = true)
     {
@@ -114,32 +126,28 @@ class TenancyUrlGenerator extends UrlGenerator
             throw new InvalidArgumentException('Attribute [name] expects a string backed enum.');
         }
 
-        [$name, $parameters] = $this->prepareRouteInputs($name, Arr::wrap($parameters)); // @phpstan-ignore argument.type
+        [$name] = $this->prepareRouteInputs(Arr::wrap($parameters), $name); // @phpstan-ignore argument.type
 
         return parent::route($name, $parameters, $absolute);
     }
 
     /**
-     * Override the temporarySignedRoute() method so that the route name gets prefixed
-     * and the tenant parameter gets added when in tenant context.
+     * Override the toRoute() to prefix the route name
+     * and add the tenant parameter when in tenant context.
+     *
+     * Also affects route(). Even though route() is overridden separately, it delegates parameter handling to toRoute().
      */
-    public function temporarySignedRoute($name, $expiration, $parameters = [], $absolute = true)
+    public function toRoute($route, $parameters, $absolute)
     {
-        if ($name instanceof BackedEnum && ! is_string($name = $name->value)) {
-            throw new InvalidArgumentException('Attribute [name] expects a string backed enum.');
+        $name = $route->getName();
+
+        [$prefixedName, $parameters] = $this->prepareRouteInputs(Arr::wrap($parameters), $name);
+
+        if ($name && $prefixedName !== $name && $tenantRoute = $this->routes->getByName($prefixedName)) {
+            $route = $tenantRoute;
         }
 
-        $wrappedParameters = Arr::wrap($parameters);
-
-        [$name, $parameters] = $this->prepareRouteInputs($name, $wrappedParameters); // @phpstan-ignore argument.type
-
-        if (isset($wrappedParameters[static::$bypassParameter])) {
-            // If the bypass parameter was passed, we need to add it back to the parameters after prepareRouteInputs() removes it,
-            // so that the underlying route() call in parent::temporarySignedRoute() can bypass the behavior modification as well.
-            $parameters[static::$bypassParameter] = $wrappedParameters[static::$bypassParameter];
-        }
-
-        return parent::temporarySignedRoute($name, $expiration, $parameters, $absolute);
+        return parent::toRoute($route, $parameters, $absolute);
     }
 
     /**
@@ -155,16 +163,19 @@ class TenancyUrlGenerator extends UrlGenerator
     }
 
     /**
-     * Takes a route name and an array of parameters to return the prefixed route name
+     * Takes an array of parameters and a route name to return the prefixed route name
      * and the route parameters with the tenant parameter added.
      *
      * To skip these modifications, pass the bypass parameter in route parameters.
      * Before returning the modified route inputs, the bypass parameter is removed from the parameters.
      */
-    protected function prepareRouteInputs(string $name, array $parameters): array
+    protected function prepareRouteInputs(array $parameters, string|null $name): array
     {
         if (! $this->routeBehaviorModificationBypassed($parameters)) {
-            $name = $this->routeNameOverride($name) ?? $this->prefixRouteName($name);
+            if (! is_null($name)) {
+                $name = $this->routeNameOverride($name) ?? $this->prefixRouteName($name);
+            }
+
             $parameters = $this->addTenantParameter($parameters);
         }
 

tests/Bootstrappers/UrlGeneratorBootstrapperTest.php

@@ -401,3 +401,47 @@ test('the bypass parameter works correctly with temporarySignedRoute', function(
         ->toContain('localhost/foo')
         ->not()->toContain('central='); // Bypass parameter gets removed from the generated URL
 });
+
+test('toRoute can automatically prefix the passed route name', function () {
+    config(['tenancy.bootstrappers' => [UrlGeneratorBootstrapper::class]]);
+
+    Route::get('/central/home', fn () => 'central')->name('home');
+    Route::get('/tenant/home', fn () => 'tenant')->name('tenant.home');
+
+    TenancyUrlGenerator::$prefixRouteNames = true;
+
+    $tenant = Tenant::create();
+
+    tenancy()->initialize($tenant);
+
+    $centralRoute = Route::getRoutes()->getByName('home');
+
+    // url()->toRoute() prefixes the name of the passed route ('home') with the tenant prefix
+    // and generates the URL for the tenant route (as if the 'tenant.home' route was passed to the method)
+    expect(url()->toRoute($centralRoute, [], true))->toBe('http://localhost/tenant/home');
+
+    // Passing the bypass parameter skips the name prefixing, so the method returns the central route URL
+    expect(url()->toRoute($centralRoute, ['central' => true], true))->toBe('http://localhost/central/home');
+});
+
+test('toRoute modifies parameters even when the route has no name', function () {
+    config(['tenancy.bootstrappers' => [UrlGeneratorBootstrapper::class]]);
+
+    TenancyUrlGenerator::$passTenantParameterToRoutes = true;
+
+    $unnamedRoute = Route::get('/unnamed', fn () => 'unnamed');
+
+    $tenant = Tenant::create();
+
+    tenancy()->initialize($tenant);
+
+    // The tenant parameter is added to the URL even for unnamed routes
+    expect(url()->toRoute($unnamedRoute, [], true))
+        ->toBe("http://localhost/unnamed?tenant={$tenant->getTenantKey()}");
+
+    // The bypass parameter prevents passing the tenant parameter and is stripped from the URL
+    expect(url()->toRoute($unnamedRoute, ['central' => true], true))
+        ->toBe("http://localhost/unnamed")
+        ->not()->toContain('tenant=')
+        ->not()->toContain('central=');
+});