added new DB field

added return stock logic

src/Migrations/2014_07_31_123213_create_inventory_tables.php

@@ -78,6 +78,7 @@ public function up()
             $table->decimal('cost', 8, 2)->default(0)->nullable();
             $table->nullableMorphs('receiver');
             $table->string('reason')->nullable();
+            $table->boolean('returned')->default(0);
 
             $table->foreign('stock_id')->references('id')->on('inventory_stocks')
                 ->onUpdate('restrict')

src/Traits/InventoryStockMovementTrait.php

@@ -40,4 +40,16 @@ public function rollback($recursive = false)
     {
         return $this->stock->rollback($this, $recursive);
     }
+
+    /**
+     * Rolls back the current movement.
+     *
+     * @param bool $recursive
+     *
+     * @return mixed
+     */
+    public function returnStock($collect_amt, $collect_reason, $dispose_amt, $dispose_reason)
+    {
+        return $this->stock->returnStock($this, $collect_amt, $collect_reason, $dispose_amt, $dispose_reason);
+    }
 }

src/Traits/InventoryStockTrait.php

@@ -245,6 +245,42 @@ public function rollback($movement = null, $recursive = false)
         return false;
     }
 
+    /**
+     * Return stock assigned to an entity. Stock may be disposed of during the process of returning
+     *
+     * @param mixed $movement
+     * @param bool  $recursive
+     *
+     * @return $this|bool
+     */
+    public function returnStock($movement, $collect_amt, $collect_reason, $dispose_amt, $dispose_reason)
+    {
+        if (!$movement) {
+            $movement = $this->getLastMovement();
+        }
+
+        $amt = $movement->getAttribute('before') - $movement->getAttribute('after');
+        $balance = $amt - $dispose_amt - $collect_amt;
+        if ($amt > 0 && $balance >= 0) {
+          $movement->returned = true; // Prevent duplicate return for this movements
+          $movement->save();
+
+          // $reason = Lang::get('inventory::reasons.rollback', [
+          //     'id' => $movement->getOriginal('id'),
+          //     'date' => $movement->getOriginal('created_at'),
+          // ]);
+          $bal_reason = "Balance leftover from returning stock";
+          $this->put($amt,$collect_reason,0,$movement->receiver_id,$movement->receiver_type);
+          $this->take($dispose_amt,$dispose_reason);
+          if ($balance > 0) {
+            $this->take($balance,$bal_reason,0,$movement->receiver_id,$movement->receiver_type);
+          }
+
+        }
+
+        return false;
+    }
+
     /**
      * Rolls back a specific movement.
      *