Fix rule validation issues.

app/Repositories/Rule/RuleRepository.php

@@ -56,6 +56,21 @@ class RuleRepository implements RuleRepositoryInterface
         return true;
     }
 
+    /**
+     * @param int $ruleId
+     *
+     * @return Rule
+     */
+    public function find(int $ruleId): Rule
+    {
+        $rule = $this->user->rules()->find($ruleId);
+        if (is_null($rule)) {
+            return new Rule;
+        }
+
+        return $rule;
+    }
+
     /**
      * FIxXME can return null
      *

app/Repositories/Rule/RuleRepositoryInterface.php

@@ -38,6 +38,14 @@ interface RuleRepositoryInterface
      */
     public function destroy(Rule $rule): bool;
 
+    /**
+     * @param int $ruleId
+     *
+     * @return Rule
+     */
+    public function find(int $ruleId): Rule;
+
+
     /**
      * @return RuleGroup
      */