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How To Create A Datatable in Angular 10 Using Bootstrap And Contrast

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By Chimdia Anyiam

Web Developer

How To Create A Datatable in Angular 10 Using Bootstrap And Contrast

What is a Datatable?

Datatables are simply tables that have options that can be used to configure and process the data to be displayed.

What is Contrast?

Contrast Design Bootstrap, popularly known as Contrast, was developed by Devwares. It is an amazing UI kit that has a vast number of components that helps make the development process a breeze. Contrast incorporated bootstrap into its core, making it all the more functional, responsive and elegant. This goes without saying, by installing Contrast in your project, bootstrap also tags along. It’s like getting two amazing products for the price of one. What a bargain! One of the components Contrast has to offer is the datatable component, which is functional and easy to use. The datatable component mixes tables with advanced options like searching, sorting and pagination. This article is going to show you, step by step, how to create a bootstrap angular datatable using contrast.

PREREQUISITES

This Datatable will be built using Angular, Bootstrap, and Contrast (ng-cdbangular-pro). You don’t need to have any prior knowledge of ng-cdbangular-pro but the following are necessary: A basic understanding of Angular A basic understanding of Bootstrap NPM installed

Let’s get started shall we.

STEP 1

Get the Pro version of Contrast from here

STEP 2

Add the ng-cdbangular-pro tgz file to your projects root folder and run this command in your terminal:

npm install ./ng-cdbangular-pro-1.0.0.tgz

STEP 3

Add Contrast Pro’s assets and bootstrap-css-only to angular.json

"assets": [
{
"glob": "**/*",
"input": "node_modules/ng-cdbangular-pro/assets",
"output": "/assets/"
}
],
"styles": [
"node_modules/bootstrap-css-only/css/bootstrap.min.css"
]

STEP 4

Import table module in app.module.ts
import { TableModule } from 'ng-cdbangular-pro';
@NgModule({
imports: [ TableModule ]
})

NB, for our example, we will be needing some other components so our final app.module.ts file will look like this;

import { TableModule, CardModule } from 'ng-cdbangular-pro';
@NgModule({
imports: [ TableModule, CardModule ]
})

Note: instead of importing one component at a time, contrast has a module called CDBProModule which contains the imports of all the custom components contrast has to offer.

import { CDBProModule } from 'ng-cdbangular-pro';
@NgModule({
imports: [CDBProModule]
})

Easy right? Now let’s go on. Contrast’s datatable component has quite a lot of boiler plate code, so let’s go through it. In the .component.ts file, paste the following code snippets:

import { Component, OnInit, ViewChild } from '@angular/core';
import { CdbTableDirective } from 'ng-cdbangular-pro';
export class ExampleComponent implements OnInit {
@ViewChild(CdbTableDirective, { static: true }) CdbTable: CdbTableDirective;
pages = [];
activePage = 0;
previousData;
entries = [5, 10, 15];
searchText: string = '';
elements: any = [
{
name: 'Tiger Nixon',
position: 'System Architect',
office: 'Edinburgh',
age: '61',
date: '2011/04/25',
salary: '320',
},
{
name: 'Garrett Winters',
position: 'Accountant',
office: 'Tokyo',
age: '63',
date: '2011/07/25',
salary: '170',
},
{
name: 'Ashton Cox',
position: 'Junior Technical Author',
office: 'San Francisco',
age: '66',
date: '2009/01/12',
salary: '86',
},
{
name: 'Cedric Kelly',
position: 'Senior JavaScript Developer',
office: 'Edinburgh',
age: '22',
date: '2012/03/29',
salary: '433',
},
{
name: 'Airi Satou',
position: 'Accountant',
office: 'Tokyo',
age: '33',
date: '2008/11/28',
salary: '162',
},
{
name: 'Brielle Williamson',
position: 'Integration Specialist',
office: 'New York',
age: '61',
date: '2012/12/02',
salary: '372',
},
{
name: 'Herrod Chandler',
position: 'Sales Assistant',
office: 'San Francisco',
age: '59',
date: '2012/08/06',
salary: '137',
},
{
name: 'Rhona Davidson',
position: 'Integration Specialist',
office: 'Tokyo',
age: '55',
date: '2010/10/14',
salary: '327',
},
{
name: 'Colleen Hurst',
position: 'JavaScript Developer',
office: 'San Francisco',
age: '39',
date: '2009/09/15',
salary: '205',
},
{
name: 'Sonya Frost',
position: 'Software Engineer',
office: 'Edinburgh',
age: '23',
date: '2008/12/13',
salary: '103',
},
{
name: 'Jena Gaines',
position: 'Office Manager',
office: 'London',
age: '30',
date: '2008/12/19',
salary: '90',
},
{
name: 'Quinn Flynn',
position: 'Support Lead',
office: 'Edinburgh',
age: '22',
date: '2013/03/03',
salary: '342',
},
{
name: 'Charde Marshall',
position: 'Regional Director',
office: 'San Francisco',
age: '36',
date: '2008/10/16',
salary: '470',
},
{
name: 'Haley Kennedy',
position: 'Senior Marketing Designer',
office: 'London',
age: '43',
date: '2012/12/18',
salary: '313',
},
];
headElements = [
{
label: 'Name',
field: 'name',
enableSort: 'enabled',
},
{
label: 'Position',
field: 'position',
enableSort: 'enabled',
},
{
label: 'Office',
field: 'office',
enableSort: 'enabled',
},
{
label: 'Age',
field: 'age',
enableSort: 'enabled',
},
{
label: 'Date',
field: 'date',
enableSort: 'enabled',
},
{
label: 'Salary',
field: 'salary',
enableSort: 'enabled',
},
];
ngOnInit(): void {
this.CdbTable.\_activePage.subscribe(data => {
this.activePage = data;
});
this.CdbTable.setEntries(this.entries[0]);
this.CdbTable.setDataSource(this.elements);
this.CdbTable.setPages();
this.previousData = this.CdbTable.getDataSource();
this.pages = this.CdbTable.pages;
}
searchItems() {
const prev = this.CdbTable.getDataSource();
if (!this.searchText) {
this.elements = this.CdbTable.getDataSource();
this.CdbTable.setDataSource(this.previousData);
this.CdbTable.setPages();
this.pages = this.CdbTable.pages;
}
if (this.searchText) {
this.CdbTable.setDataSource(this.previousData);
this.elements = this.CdbTable.filterData(this.searchText);
this.CdbTable.setDataSource(this.elements);
this.CdbTable.setPages();
this.pages = this.CdbTable.pages;
}
}
changeEntries(e) {
this.CdbTable.setEntries(e.target.value);
this.CdbTable.setPages();
this.pages = this.CdbTable.pages;
this.CdbTable.\_activePage.next(0);
}
sort() {
this.pages = this.CdbTable.pages;
}
}

The “elements” property should contain your custom data and the “headElements” should contain your data’s “thead” values. By passing “enabled” to the “enableSort” option, you give the table head (thead) the ability to sort the data by ascending value and descending value. To disable this, just pass “disabled” to the “enableSort” option. The entries property should contain the customizable number of data values to be shown per page. P.S, everything apart from “elements”, “headElements” and “entries” should be left alone.

HTML VIEW Paste the following code snippet in your html view:

<CDBCard>
<CDBCardBody>
<div class="container">
<div class="row">
<div class="col-md-6 mx-auto pl-0">
<label>
Show Entries
<select
class='custom-select custom-select-sm form-control form-control-sm ml-0'
style="margin-left: .5rem" (change)='changeEntries(\$event)'>
<option *ngFor='let entry of entries' [value]="entry">
{{ entry }}
</option>
</select>
</label>
</div>
<div class="col-md-6 mx-auto pl-0 pr-0 mb-1">
<div class="md-form">
<input
type="text"
placeholder="Search"
class="form-control" [(ngModel)]="searchText"
(keyup)="searchItems()" id="search-input">
</div>
</div>
<table CdbTable CdbTableScroll maxHeight="500"
#tableEl1="CdbTable" stickyHeader="true" hover="true"
striped='true' bordered="true" class="z-depth-1 col-md-12">
<thead class="sticky-top">
<tr>
<th *ngFor="let head of headElements; let i = index" (sortEnd)="sort()"
[CdbTableSort]="elements" [tableEl]='tableEl1'
[enableSort]='headElements[i].enableSort'
[sortBy]="headElements[i].field" scope="col">
{{head.label | titlecase}}
<CDBIcon [fas]=true icon="sort"></CDBIcon>
</th>
</tr>
</thead>
<tbody #row>
<tr *ngFor="let el of pages[activePage]; let i = index">
<th scope="row">{{el.name}}</th>
<td class="red-text">{{el.position}}</td>
<td>{{el.office}}</td>
<td>{{el.age}}</td>
<td>{{el.date}}</td>
<td>{{el.salary | currency:'USD' }}</td>
</tr>
<tr *ngIf="!pages[activePage]">
<td scope="row" colspan="100%">No Matching Records Found</td>
</tr>
</tbody>
<thead class="sticky-top">
<tr>
<th _ngFor="let head of headElements; let i = index"
(sortEnd)="sort()"
[CdbTableSort]="elements" [tableEl]='tableEl1'
[enableSort]='headElements[i].enableSort'
[sortBy]="headElements[i].field"
scope="col">{{head.label | titlecase}}
<CDBIcon [fas]=true icon="sort"></CDBIcon>
</th>
</tr>
</thead>
</table>
<div class="mt-2">
Showing
{{activePage > 0 ? (activePage _ pages[0].length) + 1 : activePage + 1}}
to {{pages.length -
1 > activePage
? pages[activePage].length * (activePage + 1)
: elements.length}} of {{elements.length}} records
</div>
<CDBTable-pagination class="ml-auto pr-0 mt-2" [tableEl]='tableEl1'>
</CDBTable-pagination>
</div>
</div>
</CDBCardBody>
</CDBCard>

This example made use of another Contrast component called CDBCard for purely visual purposes. The end result looks like this: Whew! We’ve come to the end of this article. I hope it was as fun and informative as it was for me for you. Please click this link and navigate to the Datatable page to see the live demo. Contrast’s Datatable component ships with a lot of customizable features. For more information, please check out the docs.

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