Skip to main content

How to Create Nested Grid in Angular 8

How to Create Nested Grid in Angular 8

In this article, we will learn how we create a nested grid in Angular 8.

How it works

We are using the grid list to separate the page into small sections. In each section, we want to place a different component, where one of these components is another smaller grid.

Prerequisite

  • Basic knowledge of Angular
  • Visual Studio Code must be installed
  • Angular CLI must be installed
  • Node JS must be installed 

FRONTEND

Step 1

Let's create an Angular project using following npm command

ng new nestedGrid   

Step 2

Open the newly created project in Visual Studio code and install bootstrap in this project 

npm install bootstrap --save  

Now open styles.css file and add Bootstrap file reference. To add a reference in styles.css file, add this line:

@import '~bootstrap/dist/css/bootstrap.min.css'; 

Step 3

Now, let's create a new component by using the following command.

ng g c product  

Step 4

Now create a new service using the following command.

ng generate service product  

Step 5

Now, open the 'product.component.html' and paste the following code to see the HTML template. 

<div class="card">  
  <div class="card-body pb-0">  
    <h4 style="text-align: center;">Example of Angular Nested Grid</h4>  
    <div class="row">  
      <div class="col-12 col-md-12">  
        <div class="card">  

          <div class="card-body position-relative">  
            <div class="table-responsive cnstr-record product-tbl">  
              <table class="table table-bordered heading-hvr">  
                <thead>  
                  <tr>  
                    <th> </th>  
                    <th width="50">Art.No  
                    </th>  
                    <th>Brand</th>  
                    <th>  
                      Price/Unit</th>  
                    <th>Provider</th>  
                    <th>P. Art. N</th>  
                    <th>S. A/C</th>  
                    <th>Buy A/C</th>  
                  </tr>  
                </thead>  

                <tbody *ngFor="let product of products; let i = index">  

                  <tr>  
                    <td align="center">  
                      <a class="expand-row" *ngIf="!hideme[i]" (click)="showProductCountryInfo(i,product.ProductId)">  
                        <img src="../../assets/Images/plus.png" />  

                      </a>  
                      <a class="expand-row" *ngIf="hideme[i]" (click)="hideme[i] = !hideme[i]">  
                        <img src="../../assets/Images/minus.png" />  
                      </a>  
                    </td>  
                    <td align="center">{{product.ArtNo}}</td>  
                    <td>{{product.Brand}}</td>  
                    <td>{{product.Price }}</td>  
                    <td>{{product.Provider}}</td>  
                    <td>{{product.ProviderArtNo}}</td>  
                    <td>{{product.SalesAccount}}</td>  
                    <td>{{product.BuyAccount}}</td>  
                  </tr>  

                  <!-- <div id="myresult" class="img-zoom-result"></div> -->  
                  <tr [hidden]="!hideme[i]" class="sub-table no-bg">  
                    <td align="center"> </td>  
                    <td colspan="15" class="p-0">  
                      <table class="table mb-0 table-striped">  
                        <thead class="bg-dark text-white">  
                          <tr>  
                            <th>CountryName</th>  
                            <th>Price/Unit</th>  
                            <th>Sales Account</th>  
                            <th>Buy Account</th>  

                          </tr>  
                        </thead>  
                        <tbody>  
                          <tr *ngFor="let productCountryInfo of productCountryInformation[i]">  
                            <td>{{productCountryInfo.CountryName}}</td>  
                            <td>{{productCountryInfo.Price}}</td>  
                            <td>{{productCountryInfo.SalesAccount}}</td>  
                            <td>{{productCountryInfo.BuyAccount}}</td>  

                          </tr>  
                        </tbody>  
                      </table>  
                    </td>  
                  </tr>  

                </tbody>  
              </table>  
            </div>  
          </div>  
        </div>  
      </div>  
    </div>  
  </div>  
</div>   

Step 6

After then open 'product.component.ts' file and add the following code in this file where our logic has been written.

import { Component, OnInit } from '@angular/core';  
import { ProductsService } from './products.service';  

@Component({  
  selector: 'app-products',  
  templateUrl: './products.component.html',  
  styleUrls: ['./products.component.css']  
})  
export class ProductsComponent implements OnInit {  

  products = [];  
  countryCode: any;  
  currencySymbol:any;  
  productCountryInformation: any = [];  
  hideme = [];  
  Index: any;  
  countryId: any;  
  country: any;  
  priceToDisplay=[];  

   constructor(private _productService: ProductsService) {  
  }  
  ngOnInit() {  

    this.countryId=0;  
    this.getProducts(this.countryId);  
  }  

  public getProducts(countryId) {  
    let data = [];  
    this._productService.getAllProducts(countryId).subscribe((data: any) => {  
      this.products =data;  

    })  

  }  
  public showProductCountryInfo(index,productId) {  
    this._productService.countryInfo(productId).subscribe((res:any)=>{  
      this.productCountryInformation[index] = res;  
    })  
    this.hideme[index] = !this.hideme[index];  
    this.Index = index;  
  }  

}  

Step 7

Next open 'product.component.css' file and paste the code for styling.

@charset "utf-8";   
/* CSS Document */  
@media all{  
    *{padding:0px;margin:0px;}  
div{vertical-align:top;}  
img{max-width:100%;}  
html {-webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;}  
body{overflow:auto!important; width:100%!important;}  
html, body{background-color:#e4e5e6;}  
html {position:relative; min-height:100%;}  


.card{border-radius:4px;}  
.card-header:first-child {border-radius:4px 4px 0px 0px;}  

/*Typekit*/  
html, body{font-family:'Roboto', sans-serif; font-weight:400; font-size:13px;}  
body{padding-top:52px;}  

p{font-family:'Roboto', sans-serif; color:#303030; font-weight:400; margin-bottom:1rem;}  
input, textarea, select{font-family:'Roboto', sans-serif;}  

h1,h2,h3,h4,h5,h6{font-family:'Roboto', sans-serif; font-weight:700;}  
h1{font-size:20px; color:#000000; margin-bottom:10px;}  
h2{font-size:30px;}  
h3{font-size:24px;}  
h4{font-size:18px;}  
h5{font-size:14px;}  
h6{font-size:12px;}  

.row {margin-right:-8px; margin-left:-8px;}  
.col, .col-1, .col-10, .col-11, .col-12, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-auto, .col-lg, .col-lg-1, .col-lg-10, .col-lg-11, .col-lg-12, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-lg-auto, .col-md, .col-md-1, .col-md-10, .col-md-11, .col-md-12, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-md-auto, .col-sm, .col-sm-1, .col-sm-10, .col-sm-11, .col-sm-12, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-auto, .col-xl, .col-xl-1, .col-xl-10, .col-xl-11, .col-xl-12, .col-xl-2, .col-xl-3, .col-xl-4, .col-xl-5, .col-xl-6, .col-xl-7, .col-xl-8, .col-xl-9, .col-xl-auto {padding-right:8px; padding-left:8px;}  

.card-header{background-color:#f0f3f5; border-bottom:1px solid #c8ced3; font-size:13px; font-weight:600; color:#464646; text-transform:uppercase; padding:.75rem 8px;}  


.cnstr-record th{white-space:nowrap;padding:.45rem .2rem; font-size:13px; border-bottom-width:0px!important;}  
.cnstr-record thead{background:#f0f3f5;}  

.cnstr-record .form-control{font-size:13px; padding:0px 0rem 0px 0.2rem; height:calc(2rem + 2px);}  
.cnstr-record select.form-control{padding-left:.05rem;}  
.cnstr-record .table td, .cnstr-record .table th {vertical-align:middle;}  
.cnstr-record .table td{padding:.3rem;}  
.cnstr-record .table td h4{margin:0px;}  

.wp-50{width:50px;}  
.wp-60{width:60px;}  
.wp-70{width:70px;}  
.wp-80{width:80px;}  
.wp-90{width:90px;}  
.wp-100{width:100px;}  
.mw-auto{min-width:inherit;}  
.expand-row{width:100%; border:solid 1px #596269; display:inline-block; border-radius:3px; width:16px; height:16px; vertical-align:top; background:#596269; color:#ffffff!important;}  
.expand-row img{vertical-align:top; position:relative; top:2px;}  
.sub-table th{font-weight:400; font-size:12px;}  
.sub-table td{background:#efefef;}  
.no-bg td{background:inherit;}  
.mw-100{max-width:100%;}  

}   

Step 8

At last, open 'product.service.ts' file and add services to call our API.

import { Injectable } from '@angular/core';  
import { HttpClient } from '@angular/common/http';  


@Injectable()  


export class ProductsService {  

    private url = ""; 

    constructor(public http: HttpClient) {  
    }  

    getAllProducts(countryCode) {  
        this.url = 'http://localhost:49661/api/Company/getAllProducts?countryCode='+countryCode;  
        return this.http.get<any[]>(this.url);  
    }  

    countryInfo(productId) {  
        this.url = 'http://localhost:49661/api/Company/getProductCountryInformation?productId='+productId;  
        return this.http.get<any[]>(this.url);  
    }  
}  

Step 9

Its time to see the output in your terminal type 'ng serve -o' to compile and open it in browser.

After loading our page you can see the output like in the below images:

This is image title

This is image title

Here, I am taking a product, for example, grid data is related to a product and its corresponding nested grid has information related to their parent grid.

You can check a nested grid by clicking the plus icon of parent grid so that you can see the resultant nested grid based on the index, (i.e if you click on very 1st plus icon then you can only see its first product-related information. If you click on second plus icon, then their product-related information would show.)

Comments

Popular posts from this blog

How to use Ngx-Charts in Angular ?

Charts helps us to visualize large amount of data in an easy to understand and interactive way. This helps businesses to grow more by taking important decisions from the data. For example, e-commerce can have charts or reports for product sales, with various categories like product type, year, etc. In angular, we have various charting libraries to create charts.  Ngx-charts  is one of them. Check out the list of  best angular chart libraries .  In this article, we will see data visualization with ngx-charts and how to use ngx-charts in angular application ? We will see, How to install ngx-charts in angular ? Create a vertical bar chart Create a pie chart, advanced pie chart and pie chart grid Introduction ngx-charts  is an open-source and declarative charting framework for angular2+. It is maintained by  Swimlane . It is using Angular to render and animate the SVG elements with all of its binding and speed goodness and uses d3 for the excellent math functio...

Understand Angular’s forRoot and forChild

  forRoot   /   forChild   is a pattern for singleton services that most of us know from routing. Routing is actually the main use case for it and as it is not commonly used outside of it, I wouldn’t be surprised if most Angular developers haven’t given it a second thought. However, as the official Angular documentation puts it: “Understanding how  forRoot()  works to make sure a service is a singleton will inform your development at a deeper level.” So let’s go. Providers & Injectors Angular comes with a dependency injection (DI) mechanism. When a component depends on a service, you don’t manually create an instance of the service. You  inject  the service and the dependency injection system takes care of providing an instance. import { Component, OnInit } from '@angular/core'; import { TestService } from 'src/app/services/test.service'; @Component({ selector: 'app-test', templateUrl: './test.component.html', styleUrls: ['./test.compon...

How to solve Puppeteer TimeoutError: Navigation timeout of 30000 ms exceeded

During the automation of multiple tasks on my job and personal projects, i decided to move on  Puppeteer  instead of the old school PhantomJS. One of the most usual problems with pages that contain a lot of content, because of the ads, images etc. is the load time, an exception is thrown (specifically the TimeoutError) after a page takes more than 30000ms (30 seconds) to load totally. To solve this problem, you will have 2 options, either to increase this timeout in the configuration or remove it at all. Personally, i prefer to remove the limit as i know that the pages that i work with will end up loading someday. In this article, i'll explain you briefly 2 ways to bypass this limitation. A. Globally on the tab The option that i prefer, as i browse multiple pages in the same tab, is to remove the timeout limit on the tab that i use to browse. For example, to remove the limit you should add: await page . setDefaultNavigationTimeout ( 0 ) ;  COPY SNIPPET The setDefaultNav...