title: How to search inside the array in primeNg p-table with multiselect?
body: <p>I am having the data points like an array. So I am trying to search the value inside the array but it is not working in primeng</p>
  
  <p>In the component file I am having the below part of code,</p>
  
  <pre><code>tableHeader = [
      { field: 'name', header: 'Name' },
      { field: 'skills', header: 'Skills' },
  ];
  
  modelData = [
      { "label": "HTML", "value": "HTML" },
      { "label": "Css", "value": "Css" },
      { "label": "Angular", "value": "Angular" },
      { "label": "Python", "value": "Python" },
      { "label": "Perl", "value": "Perl" },
      { "label": "JS", "value": "JS" },
      { "label": "Java", "value": "Java" }
  ];
  
  data = [
      {
          name:"User1",
          skills:["JS","Java","Angular"]
      },{
          name:"TestUser",
          skills:["HTML","Css"]
      },{
          name:"Root",
          skills:["HTML","Css","Angular","Python","Perl"]
      }
  ];
  </code></pre>
  
  <p>And the html is</p>
  
  <pre><code>&lt;p-table #dt [value]="data"&gt;
      &lt;ng-template pTemplate="header"&gt;
      &lt;tr&gt;
              &lt;th&gt;Name&lt;/th&gt;
              &lt;th&gt;Skills&lt;/th&gt;
      &lt;/tr&gt;
      &lt;tr&gt;
          &lt;th&gt;
              &lt;input pInputText type="text" (input)="dt.filter($event.target.value, 'name', 'contains')"&gt;
          &lt;/th&gt;
          &lt;th&gt;
               &lt;p-multiSelect [options]="modelData" (onChange)="dt.filter($event.value, 'skills', 'in')"&gt;&lt;/p-multiSelect&gt;
          &lt;/th&gt;
      &lt;/tr&gt;
      &lt;/ng-template&gt;
      &lt;ng-template pTemplate="body" let-rowData&gt;
          &lt;tr&gt;
              &lt;td&gt;{{rowData['name']}}&lt;/td&gt;
              &lt;td&gt;
                  &lt;span *ngFor="let skill of rowData.skills;"&gt;
                  {{skill}}
                  &lt;/span&gt;
              &lt;/td&gt;
          &lt;/tr&gt;
      &lt;/ng-template&gt;
  &lt;p-table&gt; 
  </code></pre>
  
  <p>I am able to search the <code>Name</code> field but I am not able to search the <code>Skills</code> field. because it contains the array value.</p>
  
  <p><a href="https://stackblitz.com/edit/primeng-tables-gvhrpg?file=src/app/app.component.ts" rel="nofollow noreferrer">stackblitz</a></p>