jquery - Angular 2 - ng2-smart-table - global search on a rendered field -


i have ng2-smart-table global search filter interacts fields of table. work columns doesn't have rendering. code

onsearch(query: string = '') {         if(query != ""){             this.pages.setfilter(             [             // fields want include in search                 {                 field: 'producttypedescription',                 search: query                 },                 {                 field: 'products',                 search: query                 },                 {                 field: 'varianti',                 search: query                 }         ], false);     }

and these columns 

producttypedescription: {                 title: 'tipo prodotto',                 filter: false,                 class: "colonnetabella",                 width: "20%",             },             products: {                 title: 'prodotto',                 filter: false,                 class: "colonnetabella",                 width: "20%",                 valuepreparefunction: (products) => {                      var output ="";                     var outputs = "";                      products.foreach(function(item){                         output = item.productdescription                         item.variantlist.foreach(function(el){                             outputs= output;                           })                          })                     console.log(outputs)                     return outputs;                        //return json.stringify(value)}                 }             },              varianti: {                 title: 'varianti',                 filter: false,                 class: "colonnetabella",                 type: 'custom',                 width: "20%",                 rendercomponent: variantsproductrendercomponent,             }

my search works on first column, doesn't on "varianti" , "products". didn't find question, know possible solution? thanks


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