{"action":"created","comment":{"url":"https://api.github.com/repos/laravel/framework/pulls/comments/54208530","id":54208530,"diff_hunk":"@@ -617,6 +617,18 @@ protected function validateRequired($attribute, $value)\n     }\n \n     /**\n+     * Validate that an attribute exists even if not filled.\n+     *\n+     * @param  string  $attribute\n+     * @param  mixed   $value\n+     * @return bool\n+     */\n+    protected function validatePresent($attribute, $value)\n+    {\n+        return Arr::get($this->data, $attribute, '__NO_KEY__') != 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could simply use `Arr::has`.","created_at":"2016-02-26T06:11:58Z","updated_at":"2016-02-26T06:11:58Z","html_url":"https://github.com/laravel/framework/pull/12487#discussion_r54208530","pull_request_url":"https://api.github.com/repos/laravel/framework/pulls/12487","_links":{"self":{"href":"https://api.github.com/repos/laravel/framework/pulls/comments/54208530"},"html":{"href":"https://github.com/laravel/framework/pull/12487#discussion_r54208530"},"pull_request":{"href":"https://api.github.com/repos/laravel/framework/pulls/12487"}}},"pull_request":{"url":"https://api.github.com/repos/laravel/framework/pulls/12487","id":60763622,"html_url":"https://github.com/laravel/framework/pull/12487","diff_url":"https://github.com/laravel/framework/pull/12487.diff","patch_url":"https://github.com/laravel/framework/pull/12487.patch","issue_url":"https://api.github.com/repos/laravel/framework/issues/12487","number":12487,"state":"closed","locked":false,"title":"[5.2] Add a rule to validate an attribute 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