Implementing NGX data filtering across all columns

Question

I tried to get this job done with no luck. I turned to these resources for help: http://swimlane.imtqy.com/ngx-datatable/#filter
https://github.com/swimlane/ngx-datatable/blob/master/demo/basic/filter.component. ts

Basically, I just want my filter to be applied to more than one column, without implementing code to process each column. (Some data have 20+ columns!)

Code example:

//HTML
  <input type='text' placeholder='Filter' (keyup)='updateFilter($event.target.value)' />

  <ngx-datatable
    class="material"
    columnMode="force"
    [columns]="gridProperties.FilteredColumns"
    [footerHeight]="50"
    [loadingIndicator]="gridLoadingIndicator"
    [rows]="filteredList"
    [scrollbarH]="false"
    [scrollbarV]="true"
    [selected]="selectedItem"
    [selectionType]="'single'"
    style="min-height:400px;">
  </ngx-datatable>

//TYPESCRIPT
  public items: Item[];

  updateFilter(filterValue) {
    const lowerValue = filterValue.toLowerCase();

    this.filteredList = this.items.filter(item => item.name.toLowerCase().indexOf(lowerValue) !== -1 || !lowerValue);
  }

Here, I obviously just handle the filtering for the 'name' property of my items array. This works fine as it is, but as I mentioned, if the grid contains many columns, I would like one of them to handle all of them. Any help or advice is appreciated.

Answer 1

TS (https://github.com/swimlane/ngx-datatable/blob/master/demo/basic/filter.component.ts) ( ). , , , , , , .

HTML

<ngx-datatable
 #table
 class="material striped scroll-vertical"
 [rows]="data"
 [columns]="cols"
 [columnMode]="'force'"
 [headerHeight]="35"
 [footerHeight]="35"
 [rowHeight]="'auto'"
 [limit]="pageSize"
 [selectionType]="'single'">

<input type="text" (keyup)='filterDatatable($event)'>

cols = [{name:'First Name'},{name:'Last Name'},{name:'Address'}];
data = [];
filteredData = [];

// dummy data for datatable rows
dummyData = [
  {firstName:'Daenarys',lastName:'Targaryen',address:'Dragonstone'},
  {firstName:'Sansa',lastName:'Stark',address:'Winterfell'},
  {firstName:'Cersei',lastName:'Lannister',address:'Kings Landing'},
  {firstName:'Brienne',lastName:'Tarth',address:'Sapphire Island'},
  {firstName:'Lyanna',lastName:'Mormont',address:'Bear Island'},
  {firstName:'Margaery',lastName:'Tyrell',address:'Highgarden'}
]

ngOnInit(){
  // populate datatable rows
  this.data = this.dummyData;
  // copy over dataset to empty object
  this.filteredData = this.dummyData;
}

// filters results
filterDatatable(event){
  // get the value of the key pressed and make it lowercase
  let val = event.target.value.toLowerCase();
  // get the amount of columns in the table
  let colsAmt = this.cols.length;
  // get the key names of each column in the dataset
  let keys = Object.keys(this.dummyData[0]);
  // assign filtered matches to the active datatable
  this.data = this.filteredData.filter(function(item){
    // iterate through each row column data
    for (let i=0; i<colsAmt; i++){
      // check for a match
      if (item[keys[i]].toString().toLowerCase().indexOf(val) !== -1 || !val){
        // found match, return true to add to result set
        return true;
      }
    }
  });
  // whenever the filter changes, always go back to the first page
  this.table.offset = 0;
}

Answer 2

:

updateFilter(filter: string): void {

  const val = filter.trim().toLowerCase();

  this.filteredList = this.items.slice().filter((item: any) => {
    let searchStr = '';
    for (let i = 0; i < this.gridProperties.FilteredColumns.length; i++) {
      searchStr += (item[this.gridProperties.FilteredColumns[i]]).toString().toLowerCase();
    }
    return searchStr.indexOf(val) !== -1 || !val;
  });
}

, .

Answer 3

import { DatatableComponent } from '@swimlane/ngx-datatable';
ViewChild(DatatableComponent) table: DatatableComponent;

   updateFilter(event) {
    const val = event.target.value.toLowerCase();
    var returnData: any;
    // filter our data
    const temp = this.temp.filter(function (d) {
      if (d.yourFirstColumnName.toLowerCase().indexOf(val) !== -1 || !val) {
        returnData = d.user_name.toLowerCase().indexOf(val) !== -1 || !val;
      } else if (d.yourSecondColumnName.toLowerCase().indexOf(val) !== -1 || !val) {
        returnData = d.notes_title.toLowerCase().indexOf(val) !== -1 || !val;

      }
      return returnData;
    });

 <input placeholder="Search Order" (keyup)='updateFilter($event)'>

Answer 4

 updateFilter(event) {
    const val = event.target.value.toLowerCase();
    const temp = this.temp.filter(index => {
      return (index.name.toLowerCase().indexOf(val) !== -1 ||
        index.company.toLowerCase().indexOf(val) !== -1 ||
        index.gender.toLowerCase().indexOf(val) !== -1 ||
        !val);
    });
    this.company = temp;
    this.table.offset = 0;
  }

Answer 5

This is a sample code for filtering all columns using a single-entry DEMO search