Add pagination caching

Author: mikebronner

src/CachedBuilder.php

@@ -125,6 +125,24 @@ public function min($column)
         return $this->cachedValue($arguments, $cacheKey, $method);
     }
 
+    public function paginate(
+        $perPage = null,
+        $columns = ['*'],
+        $pageName = 'page',
+        $page = null
+    ) {
+        if (! $this->isCachable) {
+            return parent::paginate($perPage, $columns, $pageName, $page);
+        }
+
+        $arguments = func_get_args();
+        $page = $page ?: 1;
+        $cacheKey = $this->makeCacheKey($columns, null, "-paginate_by_{$perPage}_{$pageName}_{$page}");
+        $method = 'paginate';
+
+        return $this->cachedValue($arguments, $cacheKey, $method);
+    }
+
     public function pluck($column, $key = null)
     {
         if (! $this->isCachable) {

tests/Unit/CachedBuilderTest.php

@@ -883,4 +883,24 @@ public function testFindOrFailCachesModels()
         $this->assertEquals($cachedResults->toArray(), $author->toArray());
         $this->assertEquals($liveResults->toArray(), $author->toArray());
     }
+
+    public function testPaginationIsCached()
+    {
+        $authors = (new Author)
+            ->paginate(3);
+
+        $key = sha1('genealabs:laravel-model-caching:genealabslaravelmodelcachingtestsfixturesauthor-paginate_by_3_page_1');
+        $tags = [
+            'genealabs:laravel-model-caching:genealabslaravelmodelcachingtestsfixturesauthor',
+        ];
+
+        $cachedResults = $this->cache()
+            ->tags($tags)
+            ->get($key)['value'];
+        $liveResults = (new UncachedAuthor)
+            ->paginate(3);
+
+        $this->assertEquals($cachedResults->toArray(), $authors->toArray());
+        $this->assertEquals($liveResults->toArray(), $authors->toArray());
+    }
 }