я пользовался визуальной средой. Но если открыть в тексте, то колонки показывает так: [{"MIGX_id":"1","header":"Материал, цвет","dataIndex":"option","width":"100","sortable":"true","show_in_grid":"1","renderer":"","clickaction":"","selectorconfig":"","renderchunktpl":"","renderoptions":"","editor":"this.textEditor"},{"MIGX_id":"2","header":"Цена","dataIndex":"price","width":"100","sortable":"false","show_in_grid":"1","renderer":"","clickaction":"","selectorconfig":"","renderchunktpl":"","renderoptions":"","editor":"this.textEditor"},{"MIGX_id":"4","header":"Дополнительные фото","dataIndex":"listviews","width":"800","sortable":"false","show_in_grid":"1","renderer":"this.renderChunk","clickaction":"","selectorconfig":"","renderchunktpl":"","renderoptions":"[{"MIGX_id":"1","name":"listViews","use_as_fallback":"","value":"","clickaction":"","handler":"","image":""}]","editor":""}]