[5.5] fix a bug where model's delete method won't work if withCount is not empty.

src/Illuminate/Database/Query/Builder.php

@@ -2224,7 +2224,10 @@ public function delete($id = null)
         }
 
         return $this->connection->delete(
-            $this->grammar->compileDelete($this), $this->getBindings()
+            $this->grammar->compileDelete($this),
+            $this->cleanBindings(
+                $this->grammar->prepareBindingsForDelete($this->bindings)
+            )
         );
     }
 

src/Illuminate/Database/Query/Grammars/Grammar.php

@@ -761,6 +761,21 @@ public function compileDelete(Builder $query)
         return trim("delete from {$this->wrapTable($query->from)} $wheres");
     }
 
+    /**
+     * Prepare the bindings for a delete statement.
+     *
+     * @param  array  $bindings
+     * @return array
+     */
+    public function prepareBindingsForDelete(array $bindings)
+    {
+        $cleanBindings = Arr::except($bindings, ['join', 'select']);
+
+        return array_values(
+            array_merge($bindings['join'], Arr::flatten($cleanBindings))
+        );
+    }
+
     /**
      * Compile a truncate table statement into SQL.
      *

tests/Database/DatabaseEloquentPolymorphicIntegrationTest.php

@@ -119,6 +119,15 @@ public function testItLoadsNestedRelationshipsOnDemand()
         $this->assertEquals(TestUser::first(), $like->likeable->owner);
     }
 
+    public function testItDeleteRecordIfWithCountNotEmpty()
+    {
+        $this->seedData();
+
+        $like = TestPost::first()->delete();
+
+        $this->assertNull(TestPost::first());
+    }
+
     /**
      * Helpers...
      */
@@ -172,6 +181,7 @@ public function posts()
 class TestPost extends Eloquent
 {
     protected $table = 'posts';
+    protected $withCount = ['comments'];
     protected $guarded = [];
 
     public function comments()

tests/Integration/Database/EloquentWithCountTest.php

@@ -62,6 +62,23 @@ public function it_basic()
             ['id' => 1, 'twos_count' => 1],
         ], $results->get()->toArray());
     }
+
+    /**
+     * @test
+     */
+    public function testDeleteWithJoins()
+    {
+        Model1::create()
+                ->twos()->create()
+                ->threes()->create();
+
+        Model2::select('two.id')
+                ->join('one', 'one.id', 1)
+                ->join('three', 'two.id', 'three.two_id')
+                ->where('two.id', 1)->delete();
+
+        $this->assertNull(Model2::find(1));
+    }
 }
 
 class Model1 extends Model