Fixed entities created with blank slugs.

Fixes #156.

app/Repos/BookRepo.php

@@ -216,12 +216,10 @@ class BookRepo extends EntityRepo
      */
     public function findSuitableSlug($name, $currentId = false)
     {
-        $originalSlug = Str::slug($name);
-        $slug = $originalSlug;
-        $count = 2;
+        $slug = Str::slug($name);
+        if ($slug === "") $slug = substr(md5(rand(1, 500)), 0, 5);
         while ($this->doesSlugExist($slug, $currentId)) {
-            $slug = $originalSlug . '-' . $count;
-            $count++;
+            $slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
         }
         return $slug;
     }

app/Repos/ChapterRepo.php

@@ -151,6 +151,7 @@ class ChapterRepo extends EntityRepo
     public function findSuitableSlug($name, $bookId, $currentId = false)
     {
         $slug = Str::slug($name);
+        if ($slug === "") $slug = substr(md5(rand(1, 500)), 0, 5);
         while ($this->doesSlugExist($slug, $bookId, $currentId)) {
             $slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
         }

app/Repos/PageRepo.php

@@ -591,14 +591,15 @@ class PageRepo extends EntityRepo
 
     /**
      * Gets a suitable slug for the resource
-     * @param            $name
-     * @param            $bookId
+     * @param string $name
+     * @param int $bookId
      * @param bool|false $currentId
      * @return string
      */
     public function findSuitableSlug($name, $bookId, $currentId = false)
     {
         $slug = Str::slug($name);
+        if ($slug === "") $slug = substr(md5(rand(1, 500)), 0, 5);
         while ($this->doesSlugExist($slug, $bookId, $currentId)) {
             $slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
         }

tests/Entity/EntityTest.php

@@ -151,8 +151,10 @@ class EntityTest extends TestCase
             ->visit('/books/create')
             ->type($book->name, '#name')
             ->type($book->description, '#description')
-            ->press('Save Book')
-            ->seePageIs('/books/my-first-book-2');
+            ->press('Save Book');
+        
+        $expectedPattern = '/\/books\/my-first-book-[0-9a-zA-Z]{3}/';
+        $this->assertRegExp($expectedPattern, $this->currentUri, "Did not land on expected page [$expectedPattern].\n");
 
         $book = \BookStack\Book::where('slug', '=', 'my-first-book')->first();
         return $book;