<form class="form-horizontal" method="post">
    <textarea class="form-control my-editor" placeholder="Оставьте Ваш комментарий" name="addComment" id="add" maxlength="8000" required></textarea>

var editor_config = {
            path_absolute: "/",
            selector: "textarea.my-editor",
            plugins: [
                "advlist autolink lists charmap preview hr",
                "searchreplace fullscreen",
                "nonbreaking save contextmenu directionality",
                "paste textcolor colorpicker "
            ],
            toolbar: "insertfile | styleselect | bold | emoticons ",
            relative_urls: false,
            file_browser_callback: function (field_name, url, type, win) {
                var x = window.innerWidth || document.documentElement.clientWidth || document.getElementsByTagName('body')[0].clientWidth;
                var y = window.innerHeight || document.documentElement.clientHeight || document.getElementsByTagName('body')[0].clientHeight;

                var cmsURL = editor_config.path_absolute + 'laravel-filemanager?field_name=' + field_name;
                if (type == 'image') {
                    cmsURL = cmsURL + "&type=Images";
                } else {
                    cmsURL = cmsURL + "&type=Files";
                }

                tinyMCE.activeEditor.windowManager.open({
                    file: cmsURL,
                    title: 'Filemanager',
                    width: x * 0.8,
                    height: y * 0.8,
                    resizable: "yes",
                    close_previous: "no"
                });
            }
        };
        tinymce.init(editor_config);