Got the tree view working

app/Http/Controllers/BookController.php

@@ -78,7 +78,9 @@ class BookController extends Controller
     public function show($slug)
     {
         $book = $this->bookRepo->getBySlug($slug);
-        return view('books/show', ['book' => $book]);
+        $pageTree = $this->pageRepo->getTreeByBookId($book->id);
+       // dd($pageTree);
+        return view('books/show', ['book' => $book, 'pageTree' => $pageTree]);
     }
 
     /**

app/Http/Controllers/PageController.php

@@ -41,12 +41,14 @@ class PageController extends Controller
      * Show the form for creating a new resource.
      *
      * @param $bookSlug
+     * @param bool $pageSlug
      * @return Response
      */
-    public function create($bookSlug)
+    public function create($bookSlug, $pageSlug = false)
     {
         $book = $this->bookRepo->getBySlug($bookSlug);
-        return view('pages/create', ['book' => $book]);
+        $page = $pageSlug ? $this->pageRepo->getBySlug($pageSlug, $book->id) : false;
+        return view('pages/create', ['book' => $book, 'parentPage' => $page]);
     }
 
     /**
@@ -61,7 +63,8 @@ class PageController extends Controller
         $this->validate($request, [
             'name' => 'required|string|max:255',
             'html' => 'required|string',
-            'priority' => 'integer'
+            'priority' => 'integer',
+            'parent' => 'integer|exists:pages,id'
         ]);
         $book = $this->bookRepo->getBySlug($bookSlug);
         $page = $this->pageRepo->newFromInput($request->all());
@@ -70,6 +73,11 @@ class PageController extends Controller
             $slug .= '1';
         }
         $page->slug =$slug;
+
+        if($request->has('parent')) {
+            $page->page_id = $request->get('parent');
+        }
+
         $page->book_id = $book->id;
         $page->text = strip_tags($page->html);
         $page->save();
@@ -87,7 +95,8 @@ class PageController extends Controller
     {
         $book = $this->bookRepo->getBySlug($bookSlug);
         $page = $this->pageRepo->getBySlug($pageSlug, $book->id);
-        return view('pages/show', ['page' => $page]);
+        $breadCrumbs = $this->pageRepo->getBreadCrumbs($page);
+        return view('pages/show', ['page' => $page, 'breadCrumbs' => $breadCrumbs, 'book' => $book]);
     }
 
     /**

app/Http/routes.php

@@ -25,6 +25,7 @@ Route::group(['prefix' => 'books'], function() {
     Route::get('/{bookSlug}/page/create', 'PageController@create');
     Route::post('/{bookSlug}/page', 'PageController@store');
     Route::get('/{bookSlug}/{pageSlug}', 'PageController@show');
+    Route::get('/{bookSlug}/{pageSlug}/create', 'PageController@create');
     Route::get('/{bookSlug}/{pageSlug}/edit', 'PageController@edit');
     Route::put('/{bookSlug}/{pageSlug}', 'PageController@update');
 });

app/Page.php

@@ -8,13 +8,33 @@ class Page extends Model
 {
     protected $fillable = ['name', 'html', 'priority'];
 
+    protected $simpleAttributes = ['name', 'id', 'slug'];
+
+    public function toSimpleArray()
+    {
+        $array = array_intersect_key($this->toArray(), array_flip($this->simpleAttributes));
+        $array['url'] = $this->getUrl();
+        return $array;
+    }
+
     public function book()
     {
         return $this->belongsTo('Oxbow\Book');
     }
 
+    public function children()
+    {
+        return $this->hasMany('Oxbow\Page');
+    }
+
+    public function parent()
+    {
+        return $this->belongsTo('Oxbow\Page', 'page_id');
+    }
+
     public function getUrl()
     {
         return '/books/' . $this->book->slug . '/' . $this->slug;
     }
+
 }

app/Repos/BookRepo.php

@@ -53,4 +53,11 @@ class BookRepo
         $book->delete();
     }
 
+    public function getTree($book)
+    {
+        $tree = $book->toArray();
+        $tree['pages'] = $this->pageRepo->getTreeByBookId($book->id);
+        return $tree;
+    }
+
 }

app/Repos/PageRepo.php

@@ -59,4 +59,62 @@ class PageRepo
         return $query->get();
     }
 
+    public function getBreadCrumbs($page)
+    {
+        $tree = [];
+        $cPage = $page;
+        while($cPage->parent && $cPage->parent->id !== 0) {
+            $cPage = $cPage->parent;
+            $tree[] = $cPage;
+        }
+        return count($tree) > 0 ? array_reverse($tree) : false;
+    }
+
+    /**
+     * Creates a tree of child pages, Nested by their
+     * set parent pages.
+     * @param $bookId
+     * @param bool $currentPageId
+     * @return array
+     */
+    public function getTreeByBookId($bookId, $currentPageId = false)
+    {
+        $topLevelPages = $this->getTopLevelPages($bookId);
+        $pageTree = [];
+
+        foreach($topLevelPages as $key => $topPage) {
+            $pageTree[$key] = $this->toArrayTree($topPage, $currentPageId);
+        }
+
+        return $pageTree;
+    }
+
+    /**
+     * Creates a page tree array with the supplied page
+     * as the parent of the tree.
+     * @param $page
+     * @param bool $currentPageId
+     * @return mixed
+     */
+    private function toArrayTree($page, $currentPageId = false)
+    {
+        $cPage = $page->toSimpleArray();
+        $cPage['current'] = ($currentPageId !== false && $cPage['id'] === $currentPageId);
+        $cPage['pages'] = [];
+        foreach($page->children as $key => $childPage) {
+            $cPage['pages'][$key] = $this->toArrayTree($childPage);
+        }
+        $cPage['hasChildren'] = count($cPage['pages']) > 0;
+        return $cPage;
+    }
+
+    /**
+     * Gets the pages at the top of the page hierarchy.
+     * @param $bookId
+     */
+    private function getTopLevelPages($bookId)
+    {
+        return $this->page->where('book_id', '=', $bookId)->where('page_id', '=', 0)->get();
+    }
+
 }