Displaying a material table in Angular - html

I'm pretty new to Angular and I'm trying to create a table to better display my data. I'm getting the data from a JSON provided by my server.
Content of data.component.html:
<div class="container">
<h1>Search history</h1>
<table *ngIf="searches">
<li *ngFor="let search of searches">
<p class="searchParams">{{search.searchParams}}</p>
<p class="searchDate">{{search.searchDate | date: "yyyy-MM-dd hh:mm"}}</p>
</li>
</table>
</div>
Content of data.component.ts:
#Component({
selector: 'app-data',
templateUrl: './data.component.html',
styleUrls: ['./data.component.scss']
})
export class DataComponent implements OnInit {
searches: Object;
constructor(private _http: HttpService) {
}
ngOnInit() {
this._http.getSearches().subscribe(data => {
this.searches = data;
console.log(this.searches);
});
}
}
What I get is something that looks like a bullet list:
I'm trying to take this as example but I don't understand how to implement it. What is my datasource here? What HTML should I write to get such a nice looking table?

If you want something like the angular material table you should actually use it and follow the docs.
If you don't want to use angular material but instead just want a regular HTML table you should adjust you code like that to use actuale table rows and colums:
<div class="container">
<h1>Search history</h1>
<table *ngIf="searches">
<tr *ngFor="let search of searches">
<td class="searchParams">{{search.searchParams}}</p>
<td class="searchDate">{{search.searchDate | date: "yyyy-MM-dd hh:mm"}}</p>
</tr>
</table>
</div>
You can then style your table via CSS.
For an angular material approach you should first install the package and import it to your module. Then you could use a template like that:
<table mat-table [dataSource]="searches" class="mat-elevation-z8">
<!-- searchParams Column -->
<ng-container matColumnDef="searchParams">
<th mat-header-cell *matHeaderCellDef> Search parameters </th>
<td mat-cell *matCellDef="let element"> {{element.searchParams}} </td>
</ng-container>
<!-- searchDate Column -->
<ng-container matColumnDef="searchDate">
<th mat-header-cell *matHeaderCellDef> Date </th>
<td mat-cell *matCellDef="let element"> {{element.searchDate}} </td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>
dont forget to define displayColumns in code behind:
displayedColumns: string[] = ['searchParams', 'searchDate'];

Something like this could work,
data.component.html
<table mat-table [dataSource]="dataSource" class="mat-elevation-z8">
<!-- Position Column -->
<ng-container matColumnDef="position">
<th mat-header-cell *matHeaderCellDef> No. </th>
<td mat-cell *matCellDef="let element"> {{element.position}} </td>
</ng-container>
<!-- Keyword Column -->
<ng-container matColumnDef="keyword">
<th mat-header-cell *matHeaderCellDef> Keyword </th>
<td mat-cell *matCellDef="let element"> {{element.keyword}} </td>
</ng-container>
<!-- Limit Column -->
<ng-container matColumnDef="limit">
<th mat-header-cell *matHeaderCellDef> Limit </th>
<td mat-cell *matCellDef="let element"> {{element.limit}} </td>
</ng-container>
<!-- Date Search Column -->
<ng-container matColumnDef="dateSearch">
<th mat-header-cell *matHeaderCellDef> Date Search </th>
<td mat-cell *matCellDef="let element"> {{element.dateSearch | date: "yyyy-MM-dd hh:mm"}} </td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</tabl1e>
data.component.ts
#Component({
selector: 'app-data',
templateUrl: './data.component.html',
styleUrls: ['./data.component.scss']
})
export class DataComponent implements OnInit {
searches: Object;
displayedColumns: string[] = ['position', 'keyword', 'limit', 'date'];
dataSource = ELEMENT_DATA;
constructor(private _http: HttpService) {
}
ngOnInit() {
this._http.getSearches().subscribe(data => {
this.searches = data;
this.dataSource = data.map((v, i) => {
position: i,
keyword: v.searchParams.keyword,
limit: v.searchParams.limit,
dateSearch: v.searchDate
});
console.log(this.searches);
});
}
}

Related

How to make each object in array its own element [duplicate]

This question already has an answer here:
Mat Table:-How to get one particular element of a particular row on a button click in Mat table angular?
(1 answer)
Closed yesterday.
I have an array of objects that I am using to make a table in Angular. The table works great and adds the data correctly. I am now wanting to be able to edit each object within the table. For example if I wanted to change John Smiths name. How would I make each object in the array its own element so that I can make changes to them individually? Right now if I check 'this.dataFromQuery' it brings back the entire result.
Array: `[
{ first_name: 'John ', last_name: 'Smith', jobNumber: 123 },
{ first_name: 'Smith', last_name: 'John', jobNumber: 321 },
{ first_name: 'Alex', last_name: 'Mason', jobNumber: 10101 },
{ first_name: 'Mason', last_name: 'Alex', jobNumber: 100101 }
]`
Table HTML `
<table mat-table [dataSource]="dataFromQuery.result" class="mat-elevation-z8">
<ng-container matColumnDef="first_name">
<th mat-header-cell *matHeaderCellDef>First Name</th>
<td mat-cell *matCellDef="let element"> {{element.first_name}} </td>
</ng-container>
<ng-container matColumnDef="last_name">
<th mat-header-cell *matHeaderCellDef>Last Name </th>
<td mat-cell *matCellDef="let element"> {{element.last_name}} </td>
</ng-container>
<ng-container matColumnDef="job_Number">
<th mat-header-cell *matHeaderCellDef> Job Number </th>
<td mat-cell *matCellDef="let element"> {{element.jobNumber}} </td>
</ng-container>
<ng-container matColumnDef="actions">
<th mat-header-cell *matHeaderCellDef> Actions </th>
<td mat-cell *matCellDef="let element">
<button (click)="openDialog()" mat-mini-fab color="primary" aria-label="Example icon button with a menu icon">
<mat-icon>edit</mat-icon>
</button>
</td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>"
`
TS
getDataFromAPi(){
this.service.showDataToClient().subscribe((response) => {
console.log("Query Results ", response)
this.dataFromQuery = response
return this.dataFromQuery.result
}, (error) => {
console.log("error", error)
})
}
You already have the "current" row element at hand. All you need to do ti is pass it into the click handler and edit the signature of the method:
<table mat-table [dataSource]="dataFromQuery.result" class="mat-elevation-z8">
...
<ng-container matColumnDef="actions">
<th mat-header-cell *matHeaderCellDef> Actions </th>
<td mat-cell *matCellDef="let element"> <!--- Here you have the row data as "element". Pass it to the "click" handler next line: -->
<button (click)="openDialog(element)" mat-mini-fab color="primary" aria-label="Example icon button with a menu icon">
<mat-icon>edit</mat-icon>
</button>
</td>
</ng-container>
</table>"
Inside your .ts file you need to edit the signature:
openDialog(element: SomeType) {}

Populate option set of multiple select statement using data from a table column in Angular Material

Here's the scenarios:
I have a table that displays dealer information, and one of the columns in the table is agents name.
I'm looking to create a table filter that filters the table based on agent name. For the filter I'm using a Select option set that looks like this.
UI:
HTML Code for select:
<div>
<button mat-raised-button class="filter"
(click)=select.open()
>
<mat-icon style="margin-right: 5px;">filter_list</mat-icon>
FIlter by Agent
</button>
<div class="mat-select-wrapper">
<mat-select #select [formControl]="agentsControl" multiple disableOptionCentering panelClass="myPanelClass">
<mat-option *ngFor="let agent of agentsList" [value]="agent">{{agent}}</mat-option>
</mat-select>
</div>
TS Code for Select drop down:
agentsControl = new FormControl();
agentsList: string[] = ['John Doe', 'Mary Jane', 'Johannah Kiffin', 'Eldin Astbery', 'Stephen Curry', 'Chris Smith'];
Here is the code for the table:
HTML Code:
<div flexLayout>
<mat-card>
<div class="table-container">
<table mat-table [dataSource]="dataSource" class="mat-elevation-z8" aria-label="Dealer Queue table">
<ng-container matColumnDef="dealer_id">
<th scope="col" mat-header-cell *matHeaderCellDef>Dealer #</th>
<td mat-cell *matCellDef="let el"> {{el.dealer_id}} </td>
</ng-container>
<ng-container matColumnDef="dealership_name">
<th scope="col" mat-header-cell *matHeaderCellDef>Dealership</th>
<td mat-cell *matCellDef="let el"><a [routerLink]="['dreams-account-page',el.dealer_id]">{{el.dealership_name}} </a></td>
</ng-container>
<ng-container matColumnDef="agent_name">
<th scope="col" mat-header-cell *matHeaderCellDef>Agent</th>
<td mat-cell *matCellDef="let el"> {{el.agent_name}} </td>
</ng-container>
<ng-container matColumnDef="state">
<th scope="col" mat-header-cell *matHeaderCellDef>State</th>
<td mat-cell *matCellDef="let el"> {{el.state}} </td>
</ng-container>
<ng-container matColumnDef="phone_number">
<th scope="col" mat-header-cell *matHeaderCellDef>Phone</th>
<td mat-cell *matCellDef="let el"> {{el.phone_number}} </td>
</ng-container>
<ng-container matColumnDef="total_cancellations">
<th scope="col" mat-header-cell *matHeaderCellDef>Cancellations</th>
<td mat-cell *matCellDef="let el"> {{el.total_cancellations}} </td>
</ng-container>
<ng-container matColumnDef="cancellations_over_120_days">
<th scope="col" mat-header-cell *matHeaderCellDef>Cancellations > 120 Days</th>
<td mat-cell *matCellDef="let el"> {{el.cancellations_over_120_days}} </td>
</ng-container>
<ng-container matColumnDef="total_titles_outstanding">
<th scope="col" mat-header-cell *matHeaderCellDef>Titles</th>
<td mat-cell *matCellDef="let el"> {{el.total_titles_outstanding}} </td>
</ng-container>
<ng-container matColumnDef="titles_over_90_days">
<th scope="col" mat-header-cell *matHeaderCellDef>Titles > 90 Days</th>
<td mat-cell *matCellDef="let el"> {{el.titles_over_90_days}} </td>
</ng-container>
<ng-container matColumnDef="last_contact_date">
<th scope="col" mat-header-cell *matHeaderCellDef>Days Since Last Contact</th>
<td mat-cell *matCellDef="let el"> {{el.last_contact_date | daysSinceToday}} </td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let dqrow; columns: displayedColumns" (click)="openBottomSheet(dqrow)"></tr>
</table>
</div>
<mat-paginator #paginator [pageSizeOptions]="[10, 20, 50, 100, 200, 500]" showFirstLastButtons></mat-paginator>
</mat-card>
</div>
TS for table:
data: DealerQueueTable[] = [];
displayedColumns: string[] = [
'dealer_id',
'dealership_name',
'agent_name',
'state',
'phone_number',
'total_cancellations',
'cancellations_over_120_days',
'total_titles_outstanding',
'titles_over_90_days',
'last_contact_date',
];
dataSource = new MatTableDataSource(this.data);
private subscriptionToDealerQueueTable : Subscription;
constructor(private dreamsService : DreamsService) { }
ngOnInit(): void {
this.subscriptionToDealerQueueTable = this.dreamsService.getDealerQueue().subscribe( dealerQueue => {
this.dataSource.data = dealerQueue;
})
}
#ViewChild('paginator') paginator: MatPaginator;
ngAfterViewInit() {
this.dataSource.paginator = this.paginator;
}
ngOnDestroy() {
this.subscriptionToDealerQueueTable?.unsubscribe();
}
}
Table Model Code:
export interface DealerQueueTable {
dealer_id : number,
dealership_name : string,
agent_name : string,
state : string,
phone_number : number,
total_cancellations : number,
cancellations_over_120_days : number,
total_titles_outstanding : number,
titles_over_90_days : number,
last_contact_date : Date,
market_manager : string,
market_manager_phone : string,
market_manager_email : string
}
Both are child components that share a common parent.
Here's an image of the folder structure:
So basically what I'm trying to do and can't figure out how to do is rather than populating the option set array "agentsList" manually, I'm trying to figure out how this can be done dynamically and programmatically? Where all the unique agent names present in table column agent are passed as values to the option set array.
Here's how I was able to solve this:
In the API call for the table data I retrieved the list of unique agent names and emitted it to the parent component:
Dealer Table TS:
#Output() agentData = new EventEmitter<string[]>();
ngOnInit(): void {
this.subscriptionToDealerQueueTable = this.dreamsService.getDealerQueue().subscribe( dealerQueue => {
//Set the dealerQueue value to this.unfilteredData so we can alter it and still access it later.
this.unfilteredData = dealerQueue;
//Call method to set the this.datasource.data based on given filters.
this.setDataSource(this.unfilteredData, this.FilterValues?.value || []);
let uniqueAgentList = [...new Set(dealerQueue.map(item => item.agent_name))];
this.agentData.emit(uniqueAgentList);
})
this.subscriptionToOptionSetValueChanges = this.FilterValues.valueChanges.subscribe( x => {
this.setDataSource(this.unfilteredData, x || []);
});
}
Using the spread (...) operator and Set operator in javascript we are able to get the unique set of values from the data returned by the api. I then emitted this value to the parent component.
Spread Operator: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax
Set Operator: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
Parent HomeComponent.html
<div fxFlexOffset="2%" >
<div class="element-header">Dealer Queue Table</div>
<app-filter #FilterDropdown [agentsListOptions]="agentList" ></app-filter>
<app-dealer-queue-table
*ngIf = "FilterDropdown?.agentsControl"
(agentData)="getUniqueAgentData($event)"
class="dealerqueuetable"
[FilterValues]="FilterDropdown?.agentsControl"
></app-dealer-queue-table>
</div>
Parent Home.Component.ts
export class HomeComponent implements OnInit {
agentList = [];
constructor() { }
ngOnInit(): void {
}
getUniqueAgentData(data : any) {
this.agentList = data;
}
}
The event binding, '(agentData)="getUniqueAgentData($event)', connects the event in the child, this.agentData.emit(uniqueAgentList), to the method in the parent, getUniqueAgentData(data : any) {
this.agentList = data;
}.
Now that we have a unique list of agents stored in agentList=[]; in our parent component we pass [agentsListOptions]="agentList" as in input back to the child FilterComponent.
Home.component.html
<app-filter #FilterDropdown [agentsListOptions]="agentList" ></app-filter>
Receive agentListOptions as an input in the filter component:
filter.component.ts
#Input() agentsListOptions: string[];
And finally use it to populate your dropdown options in the html
<mat-select [formControl]="agentsControl" multiple>
<mat-option *ngFor="let agent of agentsListOptions" [value]="agent">{{agent}
</mat-option>
</mat-select>

Data is not getting displayed in the html data, when it is stored in db.json

I have stored some data in db.json. In the ts file I have used the get function and received it in a variable. The data is coming through successfully( I checked using console.log). However it is not displaying in the html table i have created.
Below is my html file
<p>people works!</p>
<table mat-table [dataSource]="dataSource" class="mat-elevation-z8">
<!--- Note that these columns can be defined in any order.
The actual rendered columns are set as a property on the row definition" -->
<!-- Position Column -->
<ng-container matColumnDef="id">
<th mat-header-cell *matHeaderCellDef> No. </th>
<td mat-cell *matCellDef="let element; let i = index"> {{i+1}} </td>
</ng-container>
<!-- Name Column -->
<ng-container matColumnDef="name">
<th mat-header-cell *matHeaderCellDef> Name </th>
<td mat-cell *matCellDef="let element"> {{element.name}} </td>
</ng-container>
<!-- Weight Column -->
<ng-container matColumnDef="company">
<th mat-header-cell *matHeaderCellDef> Comapnay </th>
<td mat-cell *matCellDef="let element"> {{element.company}} </td>
</ng-container>
<!-- Symbol Column -->
<ng-container matColumnDef="email">
<th mat-header-cell *matHeaderCellDef> Email </th>
<td mat-cell *matCellDef="let element"> {{element.email}} </td>
</ng-container>
<ng-container matColumnDef="address">
<th mat-header-cell *matHeaderCellDef> Address </th>
<td mat-cell *matCellDef="let element"> {{element.address}} </td>
</ng-container>
<ng-container matColumnDef="active">
<th mat-header-cell *matHeaderCellDef> Active </th>
<td mat-cell *matCellDef="let element"> {{element.active}} </td>
</ng-container>
<ng-container matColumnDef="action">
<th mat-header-cell *matHeaderCellDef> Action </th>
<td mat-cell *matCellDef="let element; let j = index"><button (click) = "detail(j)"> {{element.action}} </button></td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>
<div id = "Detail">
{{userDetail.id}}<br>
{{userDetail.name}}<br>
{{userDetail.company}}<br>
{{userDetail.email}}<br>
{{userDetail.active}}<br>
{{userDetail.action}}
</div>
And the next code is my ts file
import { Component, OnInit } from '#angular/core';
import { HttpClient } from '#angular/common/http';
import { user } from './userInterface';
#Component({
selector: 'app-people',
templateUrl: './people.component.html',
styleUrls: ['./people.component.css']
})
export class PeopleComponent implements OnInit {
displayedColumns=["id","name","company","email","address","active","action"];
UserDb:user[]=[];
dataSource = this.UserDb;
userDetail: user={
id: 0,
name: '',
company: '',
email: '',
address: '',
active: false,
action: ''
};
detail(rowid: number) {
this.userDetail = this.UserDb[rowid];
}
constructor(private _http: HttpClient) {
}
ngOnInit(): void {
console.log("im working");
this._http.get("http://localhost:3002/posts").subscribe((users:any)=>{
this.UserDb = users;
console.log(this.UserDb);
})
}
}
`
My entire data is being shown in the console.
data in the console. But not showing under the table
It looks that dataSource gets the value of UserDB before UserDB is populated. So, you get valid data in the console; but not in HTML. Why do you use two variables in the first place?
Hi I found the error in the code. Actually, the variables used in json needs to be exactly the same to the one used in the front-end part of the program.Like in my ts code i have used 'id' and 'name'.But in json the same variables I've written as 'Id' and 'Name'. Hence, the problem.

How to add space in listing value in angular?

As show below code i want to add space after every value in listing in angular. This data are come in table view.
In HTML file
<ng-container matColumnDef="rType">
<th mat-header-cell *matHeaderCellDef > Resource Type </th>
<td mat-cell *matCellDef="let element"> {{element.rType}} </td>
</ng-container>
In ts file
bindTableCol() : void {
if(DNHelper.loginUserData && DNHelper.loginUserData.resourcePreference1 && DNHelper.loginUserData.resourcePreference1.length > 0){
this.displayedColumns = DNHelper.getColumnTable(DNHelper.loginUserData.resourcePreference1);
this.displayedColumns.push('view_more');
this.displayedColumns.push('action');
} else {
this.displayedColumns = ['divisonName', 'categoryName', 'rType', 'resourceStatus', 'view_more', 'action'];
}
}
In Result (These are values)
CRWT1,CRWT2IA,CRWT2,CRWT3,ENG1
Expected Result
CRWT1, CRWT2IA, CRWT2, CRWT3, ENG1
There snap of generated html
To minimize the load on your application, you might also consider creating a pipe.
It could look something like this, as far as usage: <p>{{ element.rType|join:', ' }}</p>.
The transform function would look like this:
#Pipe({
name: 'join'
})
export class JoinPipe implements PipeTransform {
transform(input:Array<any>, sep = ','): string {
return input.join(sep);
}
}
You can try this :
<ng-container matColumnDef="rType">
<th mat-header-cell *matHeaderCellDef > Resource Type </th>
<td mat-cell *matCellDef="let element"> {{element.rType.split(",").join(", ")}} </td>
</ng-container>
Use this code It will help you.
<ng-container matColumnDef="rType">
<th mat-header-cell *matHeaderCellDef > Resource Type </th>
<td mat-cell *matCellDef="let element"> {{element.rType.replaceAll(',',', '}} </td>
</ng-container>

complex types table with filtering angular material

I wanted to use table with filtering from Angular Material, but I can not filter complex types (Branch.category). Actual filter working only for subjectName.
TS:
export class Subject {
id: Number = null;
subjectName: String = '';
branch: Branch = new Branch;
}
export class Branch {
category: String = '';
}
displayedColumns: string[] = ['id', 'subjectName', 'category'];
dataSource;
subjects: Subject[];
constructor() {
this.subjects = [];
this.subjects.push({id:1, subjectName: 'Biology', branch: {category: 'science'}});
this.subjects.push({id:2, subjectName: 'physics', branch: {category: 'science'}});
this.subjects.push({id:3, subjectName: 'english', branch: {category: 'humanities'}});
this.dataSource = new MatTableDataSource(this.subjects);
}
applyFilter(filterValue: string) {
console.log(filterValue);
this.dataSource.filter = filterValue.trim().toLowerCase();
}
HTML:
<mat-form-field>
<input matInput (keyup)="applyFilter($event.target.value)" placeholder="search">
</mat-form-field>
<table mat-table [dataSource]="dataSource" class="mat-elevation-z8">
<ng-container matColumnDef="id">
<th mat-header-cell *matHeaderCellDef> ID </th>
<td mat-cell *matCellDef="let element"> {{element.id}} </td>
</ng-container>
<ng-container matColumnDef="subjectName">
<th mat-header-cell *matHeaderCellDef> subjectName </th>
<td mat-cell *matCellDef="let element"> {{element.subjectName}} </td>
</ng-container>
<ng-container matColumnDef="category">
<th mat-header-cell *matHeaderCellDef> category </th>
<td mat-cell *matCellDef="let element"> {{element.branch.category}} </td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let element; columns: displayedColumns;"
[ngClass]="{'highlight': selectedRowIndex == element.id}"
(click)="highlight(element)"></tr>
</table>
I would like to make two separate filters: subjectName and category.
Welcome to StackOverflow, I think you might want to do a custom filter for your data table, you can do this by overriding the filterPredicate property of the data source like this:
this.dataSource.filterPredicate = (data, filter) => {
const customField = data.branch.category;
return customField === filter;
}
This is just a small example for you and it may need some fix for you to work. Just let me know how it fits and we can work on it. You can read the docs for more info here.
Edit: Found this Github issue and I think it will be useful for you.