abp/docs/en/Tutorials/Part-2.md

ASP.NET Core {{UI_Value}} Tutorial - Part 2

//[doc-params]
{
    "UI": ["MVC","NG"]
}

{{ if UI == "MVC" DB="ef" DB_Text="Entity Framework Core" UI_Text="mvc" else if UI == "NG" DB="mongodb" DB_Text="MongoDB" UI_Text="angular" else DB ="?" UI_Text="?" end }}

About this tutorial

This is the second part of the ASP.NET Core {{UI_Value}} tutorial series. All parts:

• Part I: Creating the project and book list page
• Part II: Creating, updating and deleting books (this tutorial)
• Part III: Integration tests

You can also watch this video course prepared by an ABP community member, based on this tutorial.

{{if UI == "MVC"}}

Creating a new book

In this section, you will learn how to create a new modal dialog form to create a new book. The modal dialog will look like in the below image:

Create the modal form

Create a new razor page, named CreateModal.cshtml under the Pages/Books folder of the Acme.BookStore.Web project.

CreateModal.cshtml.cs

Open the CreateModal.cshtml.cs file (CreateModalModel class) and replace with the following code:

using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace Acme.BookStore.Web.Pages.Books
{
    public class CreateModalModel : BookStorePageModel
    {
        [BindProperty]
        public CreateUpdateBookDto Book { get; set; }

        private readonly IBookAppService _bookAppService;

        public CreateModalModel(IBookAppService bookAppService)
        {
            _bookAppService = bookAppService;
        }

        public async Task<IActionResult> OnPostAsync()
        {
            await _bookAppService.CreateAsync(Book);
            return NoContent();
        }
    }
}

• This class is derived from the BookStorePageModel instead of standard PageModel. BookStorePageModel inherits the PageModel and adds some common properties & methods that can be used in your page model classes.
• [BindProperty] attribute on the Book property binds post request data to this property.
• This class simply injects the IBookAppService in the constructor and calls the CreateAsync method in the OnPostAsync handler.

CreateModal.cshtml

Open the CreateModal.cshtml file and paste the code below:

@page
@inherits Acme.BookStore.Web.Pages.BookStorePage
@using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
@model Acme.BookStore.Web.Pages.Books.CreateModalModel
@{
    Layout = null;
}
<abp-dynamic-form abp-model="Book" data-ajaxForm="true" asp-page="/Books/CreateModal">
    <abp-modal>
        <abp-modal-header title="@L["NewBook"].Value"></abp-modal-header>
        <abp-modal-body>
            <abp-form-content />
        </abp-modal-body>
        <abp-modal-footer buttons="@(AbpModalButtons.Cancel|AbpModalButtons.Save)"></abp-modal-footer>
    </abp-modal>
</abp-dynamic-form>

• This modal uses abp-dynamic-form tag helper to automatically create the form from the model CreateBookViewModel.
  • abp-model attribute indicates the model object where it's the Book property in this case.
  • data-ajaxForm attribute sets the form to submit via AJAX, instead of a classic page post.
  • abp-form-content tag helper is a placeholder to render the form controls (it is optional and needed only if you have added some other content in the abp-dynamic-form tag, just like in this page).

Add the "New book" button

Open the Pages/Books/Index.cshtml and set the content of abp-card-header tag as below:

<abp-card-header>
    <abp-row>
        <abp-column size-md="_6">
            <h2>@L["Books"]</h2>
        </abp-column>
        <abp-column size-md="_6" class="text-right">
            <abp-button id="NewBookButton"
                        text="@L["NewBook"].Value"
                        icon="plus"
                        button-type="Primary" />
        </abp-column>
    </abp-row>
</abp-card-header>

This adds a new button called New book to the top-right of the table:

Open the pages/books/index.js and add the following code just after the Datatable configuration:

var createModal = new abp.ModalManager(abp.appPath + 'Books/CreateModal');

createModal.onResult(function () {
    dataTable.ajax.reload();
});

$('#NewBookButton').click(function (e) {
    e.preventDefault();
    createModal.open();
});

• abp.ModalManager is a helper class to manage modals in the client side. It internally uses Twitter Bootstrap's standard modal, but abstracts many details by providing a simple API.

Now, you can run the application and add new books using the new modal form.

Updating a book

Create a new razor page, named EditModal.cshtml under the Pages/Books folder of the Acme.BookStore.Web project:

EditModal.cshtml.cs

Open the EditModal.cshtml.cs file (EditModalModel class) and replace with the following code:

using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace Acme.BookStore.Web.Pages.Books
{
    public class EditModalModel : BookStorePageModel
    {
        [HiddenInput]
        [BindProperty(SupportsGet = true)]
        public Guid Id { get; set; }

        [BindProperty]
        public CreateUpdateBookDto Book { get; set; }

        private readonly IBookAppService _bookAppService;

        public EditModalModel(IBookAppService bookAppService)
        {
            _bookAppService = bookAppService;
        }

        public async Task OnGetAsync()
        {
            var bookDto = await _bookAppService.GetAsync(Id);
            Book = ObjectMapper.Map<BookDto, CreateUpdateBookDto>(bookDto);
        }

        public async Task<IActionResult> OnPostAsync()
        {
            await _bookAppService.UpdateAsync(Id, Book);
            return NoContent();
        }
    }
}

• [HiddenInput] and [BindProperty] are standard ASP.NET Core MVC attributes. SupportsGet is used to be able to get Id value from query string parameter of the request.
• In the GetAsync method, we get BookDto from BookAppService and this is being mapped to the DTO object CreateUpdateBookDto.
• The OnPostAsync uses BookAppService.UpdateAsync() to update the entity.

Mapping from BookDto to CreateUpdateBookDto

To be able to map the BookDto to CreateUpdateBookDto, configure a new mapping. To do this, open the BookStoreWebAutoMapperProfile.cs in the Acme.BookStore.Web project and change it as shown below:

using AutoMapper;

namespace Acme.BookStore.Web
{
    public class BookStoreWebAutoMapperProfile : Profile
    {
        public BookStoreWebAutoMapperProfile()
        {
            CreateMap<BookDto, CreateUpdateBookDto>();
        }
    }
}

• We have just added CreateMap<BookDto, CreateUpdateBookDto>(); to define this mapping.

EditModal.cshtml

Replace EditModal.cshtml content with the following content:

@page
@inherits Acme.BookStore.Web.Pages.BookStorePage
@using Acme.BookStore.Web.Pages.Books
@using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Modal
@model EditModalModel
@{
    Layout = null;
}
<abp-dynamic-form abp-model="Book" data-ajaxForm="true" asp-page="/Books/EditModal">
    <abp-modal>
        <abp-modal-header title="@L["Update"].Value"></abp-modal-header>
        <abp-modal-body>
            <abp-input asp-for="Id" />
            <abp-form-content />
        </abp-modal-body>
        <abp-modal-footer buttons="@(AbpModalButtons.Cancel|AbpModalButtons.Save)"></abp-modal-footer>
    </abp-modal>
</abp-dynamic-form>

This page is very similar to the CreateModal.cshtml, except:

• It includes an abp-input for the Id property to store Id of the editing book (which is a hidden input).
• It uses Books/EditModal as the post URL and Update text as the modal header.

Add "Actions" dropdown to the table

We will add a dropdown button to the table named Actions.

Open the Pages/Books/Index.cshtml page and change the <abp-table> section as shown below:

<abp-table striped-rows="true" id="BooksTable">
    <thead>
        <tr>
            <th>@L["Actions"]</th>
            <th>@L["Name"]</th>
            <th>@L["Type"]</th>
            <th>@L["PublishDate"]</th>
            <th>@L["Price"]</th>
            <th>@L["CreationTime"]</th>
        </tr>
    </thead>
</abp-table>

• We just added a new th tag for the "Actions" button.

Open the pages/books/index.js and replace the content as below:

$(function () {

    var l = abp.localization.getResource('BookStore');

    var createModal = new abp.ModalManager(abp.appPath + 'Books/CreateModal');
    var editModal = new abp.ModalManager(abp.appPath + 'Books/EditModal');

    var dataTable = $('#BooksTable').DataTable(abp.libs.datatables.normalizeConfiguration({
        processing: true,
        serverSide: true,
        paging: true,
        searching: false,
        autoWidth: false,
        scrollCollapse: true,
        order: [[1, "asc"]],
        ajax: abp.libs.datatables.createAjax(acme.bookStore.book.getList),
        columnDefs: [
            {
                rowAction: {
                    items:
                        [
                            {
                                text: l('Edit'),
                                action: function (data) {
                                    editModal.open({ id: data.record.id });
                                }
                            }
                        ]
                }
            },
            { data: "name" },
            { data: "type" },
            { data: "publishDate" },
            { data: "price" },
            { data: "creationTime" }
        ]
    }));

    createModal.onResult(function () {
        dataTable.ajax.reload();
    });

    editModal.onResult(function () {
        dataTable.ajax.reload();
    });

    $('#NewBookButton').click(function (e) {
        e.preventDefault();
        createModal.open();
    });
});

• Used abp.localization.getResource('BookStore') to be able to use the same localization texts defined on the server-side.
• Added a new ModalManager named createModal to open the create modal dialog.
• Added a new ModalManager named editModal to open the edit modal dialog.
• Added a new column at the beginning of the columnDefs section. This column is used for the "Actions" dropdown button.
• "New Book" action simply calls createModal.open() to open the create dialog.
• "Edit" action simply calls editModal.open() to open the edit dialog.

You can run the application and edit any book by selecting the edit action. The final UI looks as below:

Deleting a book

Open the pages/books/index.js and add a new item to the rowAction items:

{
    text: l('Delete'),
    confirmMessage: function (data) {
        return l('BookDeletionConfirmationMessage', data.record.name);
    },
    action: function (data) {
        acme.bookStore.book
            .delete(data.record.id)
            .then(function() {
                abp.notify.info(l('SuccessfullyDeleted'));
                dataTable.ajax.reload();
            });
    }
}

• confirmMessage option is used to ask a confirmation question before executing the action.
• acme.bookStore.book.delete() method makes an AJAX request to JavaScript proxy function to delete a book.
• abp.notify.info() shows a notification after the delete operation.

The final index.js content is shown below:

$(function () {

    var l = abp.localization.getResource('BookStore');

    var createModal = new abp.ModalManager(abp.appPath + 'Books/CreateModal');
    var editModal = new abp.ModalManager(abp.appPath + 'Books/EditModal');

    var dataTable = $('#BooksTable').DataTable(abp.libs.datatables.normalizeConfiguration({
        processing: true,
        serverSide: true,
        paging: true,
        searching: false,
        autoWidth: false,
        scrollCollapse: true,
        order: [[1, "asc"]],
        ajax: abp.libs.datatables.createAjax(acme.bookStore.book.getList),
        columnDefs: [
            {
                rowAction: {
                    items:
                    [
                        {
                            text: l('Edit'),
                            action: function (data) {
                                editModal.open({ id: data.record.id });
                            }
                        },
                        {
                            text: l('Delete'),
                            confirmMessage: function (data) {
                                return l('BookDeletionConfirmationMessage', data.record.name);
                            },
                            action: function (data) {
                                acme.bookStore.book
                                    .delete(data.record.id)
                                    .then(function() {
                                        abp.notify.info(l('SuccessfullyDeleted'));
                                        dataTable.ajax.reload();
                                    });
                            }
                        }
                    ]
                }
            },
            { data: "name" },
            { data: "type" },
            { data: "publishDate" },
            { data: "price" },
            { data: "creationTime" }
        ]
    }));

    createModal.onResult(function () {
        dataTable.ajax.reload();
    });

    editModal.onResult(function () {
        dataTable.ajax.reload();
    });

    $('#NewBookButton').click(function (e) {
        e.preventDefault();
        createModal.open();
    });
});

Open the en.json in the Acme.BookStore.Domain.Shared project and add the following translations:

"BookDeletionConfirmationMessage": "Are you sure to delete the book {0}?",
"SuccessfullyDeleted": "Successfully deleted"

Run the application and try to delete a book.

{{end}}

{{if UI == "NG"}}

Creating a new book

In this section, you will learn how to create a new modal dialog form to create a new book.

Type definition

Open books.ts file in app\store\models folder and replace the content as below:

export namespace Books {
  export interface State {
    books: Response;
  }

  export interface Response {
    items: Book[];
    totalCount: number;
  }

  export interface Book {
    name: string;
    type: BookType;
    publishDate: string;
    price: number;
    lastModificationTime: string;
    lastModifierId: string;
    creationTime: string;
    creatorId: string;
    id: string;
  }

  export enum BookType {
    Undefined,
    Adventure,
    Biography,
    Dystopia,
    Fantastic,
    Horror,
    Science,
    ScienceFiction,
    Poetry,
  }

  //<== added CreateUpdateBookInput interface ==>
  export interface CreateUpdateBookInput {
    name: string;
    type: BookType;
    publishDate: string;
    price: number;
  }
}

• We added CreateUpdateBookInput interface.
• You can see the properties of this interface from Swagger UI.
• The CreateUpdateBookInput interface matches with the CreateUpdateBookDto in the backend.

Service method

Open the books.service.ts file in app\books\shared folder and replace the content as below:

import { Injectable } from '@angular/core';
import { RestService } from '@abp/ng.core';
import { Books } from '../../store/models';
import { Observable } from 'rxjs';

@Injectable({
  providedIn: 'root',
})
export class BooksService {
  constructor(private restService: RestService) {}

  get(): Observable<Books.Response> {
    return this.restService.request<void, Books.Response>({
      method: 'GET',
      url: '/api/app/book'
    });
  }

  //<== added create method ==>
  create(createBookInput: Books.CreateUpdateBookInput): Observable<Books.Book> {
    return this.restService.request<Books.CreateUpdateBookInput, Books.Book>({
      method: 'POST',
      url: '/api/app/book',
      body: createBookInput
    });
  }
}

• We added the create method to perform an HTTP Post request to the server.
• restService.request function gets generic parameters for the types sent to and received from the server. This example sends a CreateUpdateBookInput object and receives a Book object (you can set void for request or return type if not used).

State definitions

Open books.action.ts in app\store\actions folder and replace the content as below:

import { Books } from '../models'; //<== added this line ==>

export class GetBooks {
  static readonly type = '[Books] Get';
}

//added CreateUpdateBook class
export class CreateUpdateBook {
  static readonly type = '[Books] Create Update Book';
  constructor(public payload: Books.CreateUpdateBookInput) { }
}

• We imported the Books namespace and created the CreateUpdateBook action.

Open books.state.ts file in app\store\states and replace the content as below:

import { State, Action, StateContext, Selector } from '@ngxs/store';
import { GetBooks, CreateUpdateBook } from '../actions/books.actions'; //<== added CreateUpdateBook==>
import { Books } from '../models/books';
import { BooksService } from '../../books/shared/books.service';
import { tap } from 'rxjs/operators';

@State<Books.State>({
  name: 'BooksState',
  defaults: { books: {} } as Books.State,
})
export class BooksState {
  @Selector()
  static getBooks(state: Books.State) {
    return state.books.items || [];
  }

  constructor(private booksService: BooksService) { }

  @Action(GetBooks)
  get(ctx: StateContext<Books.State>) {
    return this.booksService.get().pipe(
      tap(booksResponse => {
        ctx.patchState({
          books: booksResponse,
        });
      }),
    );
  }

  //added CreateUpdateBook action listener
  @Action(CreateUpdateBook)
  save(ctx: StateContext<Books.State>, action: CreateUpdateBook) {
    return this.booksService.create(action.payload);
  }
}

• We imported CreateUpdateBook action and defined the save method that will listen to a CreateUpdateBook action to create a book.

When the SaveBook action dispatched, the save method is being executed. It calls create method of the BooksService.

Add a modal to BookListComponent

Open book-list.component.html file in books\book-list folder and replace the content as below:

<div class="card">
  <div class="card-header">
    <div class="row">
      <div class="col col-md-6">
        <h5 class="card-title">
          {%{{{ '::Menu:Books' | abpLocalization }}}%}
        </h5>
      </div>
       <!--Added new book button -->
      <div class="text-right col col-md-6">
        <div class="text-lg-right pt-2">
          <button
            id="create"
            class="btn btn-primary"
            type="button"
            (click)="createBook()"
          >
            <i class="fa fa-plus mr-1"></i>
            <span>{%{{{ "::NewBook" | abpLocalization }}}%}</span>
          </button>
        </div>
      </div>
    </div>
  </div>
  <div class="card-body">
    <abp-table
      [value]="books$ | async"
      [abpLoading]="loading"
      [headerTemplate]="tableHeader"
      [bodyTemplate]="tableBody"
      [rows]="10"
      [scrollable]="true"
    >
    </abp-table>
    <ng-template #tableHeader>
      <tr>
        <th>{%{{{ "::Name" | abpLocalization }}}%}</th>
        <th>{%{{{ "::Type" | abpLocalization }}}%}</th>
        <th>{%{{{ "::PublishDate" | abpLocalization }}}%}</th>
        <th>{%{{{ "::Price" | abpLocalization }}}%}</th>
      </tr>
    </ng-template>
    <ng-template #tableBody let-data>
      <tr>
        <td>{%{{{ data.name }}}%}</td>
        <td>{%{{{ booksType[data.type] }}}%}</td>
        <td>{%{{{ data.publishDate | date }}}%}</td>
        <td>{%{{{ data.price }}}%}</td>
      </tr>
    </ng-template>
  </div>
</div>

<!--added modal-->
<abp-modal [(visible)]="isModalOpen">
    <ng-template #abpHeader>
        <h3>{%{{{ '::NewBook' | abpLocalization }}}%}</h3>
    </ng-template>

    <ng-template #abpBody> </ng-template>

    <ng-template #abpFooter>
        <button type="button" class="btn btn-secondary" #abpClose>
             {%{{{ 'AbpAccount::Close' | abpLocalization }}}%}
        </button>
    </ng-template>
</abp-modal>

• We added the abp-modal which renders a modal to allow user to create a new book.
• abp-modal is a pre-built component to show modals. While you could use another approach to show a modal, abp-modal provides additional benefits.
• We added New book button to the AbpContentToolbar.

Open book-list.component. file in books\book-list folder and replace the content as below:

import { Component, OnInit } from '@angular/core';
import { Store, Select } from '@ngxs/store';
import { BooksState } from '../../store/states';
import { Observable } from 'rxjs';
import { Books } from '../../store/models';
import { GetBooks } from '../../store/actions';

@Component({
  selector: 'app-book-list',
  templateUrl: './book-list.component.html',
  styleUrls: ['./book-list.component.scss'],
})
export class BookListComponent implements OnInit {
  @Select(BooksState.getBooks)
  books$: Observable<Books.Book[]>;

  booksType = Books.BookType;

  loading = false;

  isModalOpen = false; //<== added this line ==>

  constructor(private store: Store) { }

  ngOnInit() {
    this.get();
  }

  get() {
    this.loading = true;
    this.store.dispatch(new GetBooks()).subscribe(() => {
      this.loading = false;
    });
  }

  //added createBook method
  createBook() {
    this.isModalOpen = true;
  }
}

• We added isModalOpen = false and createBook method.

You can open your browser and click New book button to see the new modal.

Create a reactive form

Reactive forms provide a model-driven approach to handling form inputs whose values change over time.

Open book-list.component.ts file in app\books\book-list folder and replace the content as below:

import { Component, OnInit } from '@angular/core';
import { Store, Select } from '@ngxs/store';
import { BooksState } from '../../store/states';
import { Observable } from 'rxjs';
import { Books } from '../../store/models';
import { GetBooks } from '../../store/actions';
import { FormGroup, FormBuilder, Validators } from '@angular/forms'; //<== added this line ==>

@Component({
  selector: 'app-book-list',
  templateUrl: './book-list.component.html',
  styleUrls: ['./book-list.component.scss'],
})
export class BookListComponent implements OnInit {
  @Select(BooksState.getBooks)
  books$: Observable<Books.Book[]>;

  booksType = Books.BookType;

  loading = false;

  isModalOpen = false;

  form: FormGroup;

  constructor(private store: Store, private fb: FormBuilder) { } //<== added FormBuilder ==>

  ngOnInit() {
    this.get();
  }

  get() {
    this.loading = true;
    this.store.dispatch(new GetBooks()).subscribe(() => {
      this.loading = false;
    });
  }

  createBook() {
    this.buildForm(); //<== added this line ==>
    this.isModalOpen = true;
  }

  //added buildForm method
  buildForm() {
    this.form = this.fb.group({
      name: ['', Validators.required],
      type: [null, Validators.required],
      publishDate: [null, Validators.required],
      price: [null, Validators.required],
    });
  }
}

• We imported FormGroup, FormBuilder and Validators.
• We injected fb: FormBuilder service to the constructor. The FormBuilder service provides convenient methods for generating controls. It reduces the amount of boilerplate needed to build complex forms.
• We added buildForm method to the end of the file and executed buildForm() in the createBook method. This method creates a reactive form to be able to create a new book.
  • The group method of FormBuilder, fb creates a FormGroup.
  • Added Validators.required static method which validates the relevant form element.

Create the DOM elements of the form

Open book-list.component.html in app\books\book-list folder and replace <ng-template #abpBody> </ng-template> with the following code part:

<ng-template #abpBody>
  <form [formGroup]="form">
    <div class="form-group">
      <label for="book-name">Name</label><span> * </span>
      <input type="text" id="book-name" class="form-control" formControlName="name" autofocus />
    </div>

    <div class="form-group">
      <label for="book-price">Price</label><span> * </span>
      <input type="number" id="book-price" class="form-control" formControlName="price" />
    </div>

    <div class="form-group">
      <label for="book-type">Type</label><span> * </span>
      <select class="form-control" id="book-type" formControlName="type">
        <option [ngValue]="null">Select a book type</option>
        <option [ngValue]="booksType[type]" *ngFor="let type of bookTypeArr"> {%{{{ type }}}%}</option>
      </select>
    </div>

    <div class="form-group">
      <label>Publish date</label><span> * </span>
      <input
        #datepicker="ngbDatepicker"
        class="form-control"
        name="datepicker"
        formControlName="publishDate"
        ngbDatepicker
        (click)="datepicker.toggle()"
      />
    </div>
  </form>
</ng-template>

• This template creates a form with Name, Price, Type and Publish date fields.
• We've used NgBootstrap datepicker in this component.

Datepicker requirements

Open books.module.ts file in app\books folder and replace the content as below:

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';

import { BooksRoutingModule } from './books-routing.module';
import { BooksComponent } from './books.component';
import { BookListComponent } from './book-list/book-list.component';
import { SharedModule } from '../shared/shared.module';
import { NgbDatepickerModule } from '@ng-bootstrap/ng-bootstrap'; //<== added this line ==>

@NgModule({
  declarations: [BooksComponent, BookListComponent],
  imports: [
    CommonModule,
    BooksRoutingModule,
    SharedModule,
    NgbDatepickerModule //<== added this line ==>
  ]
})
export class BooksModule { }

• We imported NgbDatepickerModule to be able to use the date picker.

Open book-list.component.ts file in app\books\book-list folder and replace the content as below:

import { Component, OnInit } from '@angular/core';
import { Store, Select } from '@ngxs/store';
import { BooksState } from '../../store/states';
import { Observable } from 'rxjs';
import { Books } from '../../store/models';
import { GetBooks } from '../../store/actions';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
import { NgbDateNativeAdapter, NgbDateAdapter } from '@ng-bootstrap/ng-bootstrap'; //<== added this line ==>

@Component({
  selector: 'app-book-list',
  templateUrl: './book-list.component.html',
  styleUrls: ['./book-list.component.scss'],
  providers: [{ provide: NgbDateAdapter, useClass: NgbDateNativeAdapter }] //<== added this line ==>
})
export class BookListComponent implements OnInit {
  @Select(BooksState.getBooks)
  books$: Observable<Books.Book[]>;

  booksType = Books.BookType;

  //added bookTypeArr array
  bookTypeArr = Object.keys(Books.BookType).filter(
    bookType => typeof this.booksType[bookType] === 'number'
  );

  loading = false;

  isModalOpen = false;

  form: FormGroup;

  constructor(private store: Store, private fb: FormBuilder) { }

  ngOnInit() {
    this.get();
  }

  get() {
    this.loading = true;
    this.store.dispatch(new GetBooks()).subscribe(() => {
      this.loading = false;
    });
  }

  createBook() {
    this.buildForm();
    this.isModalOpen = true;
  }

  buildForm() {
    this.form = this.fb.group({
      name: ['', Validators.required],
      type: [null, Validators.required],
      publishDate: [null, Validators.required],
      price: [null, Validators.required],
    });
  }
}

• We imported NgbDateNativeAdapter, NgbDateAdapter

• We added a new provider NgbDateAdapter that converts Datepicker value to Date type. See the datepicker adapters for more details.

• We added bookTypeArr array to be able to use it in the combobox values. The bookTypeArr contains the fields of the BookType enum. Resulting array is shown below:

  ['Adventure', 'Biography', 'Dystopia', 'Fantastic' ...]
  

  This array was used in the previous form template in the ngFor loop.

Now, you can open your browser to see the changes:

Saving the book

Open book-list.component.html in app\books\book-list folder and add the following abp-button to save the new book.

<ng-template #abpFooter>
  <button type="button" class="btn btn-secondary" #abpClose>
      {%{{{ 'AbpAccount::Close' | abpLocalization }}}%}
  </button>
    
  <!--added save button-->
  <button class="btn btn-primary" (click)="save()" [disabled]="form.invalid">
        <i class="fa fa-check mr-1"></i>
        {%{{{ 'AbpAccount::Save' | abpLocalization }}}%}
  </button>
</ng-template>

• This adds a save button to the bottom area of the modal:

Open book-list.component.ts file in app\books\book-list folder and replace the content as below:

import { Component, OnInit } from '@angular/core';
import { Store, Select } from '@ngxs/store';
import { BooksState } from '../../store/states';
import { Observable } from 'rxjs';
import { Books } from '../../store/models';
import { GetBooks, CreateUpdateBook } from '../../store/actions'; //<== added CreateUpdateBook ==>
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
import { NgbDateNativeAdapter, NgbDateAdapter } from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'app-book-list',
  templateUrl: './book-list.component.html',
  styleUrls: ['./book-list.component.scss'],
  providers: [{ provide: NgbDateAdapter, useClass: NgbDateNativeAdapter }]
})
export class BookListComponent implements OnInit {
  @Select(BooksState.getBooks)
  books$: Observable<Books.Book[]>;

  booksType = Books.BookType;

  bookTypeArr = Object.keys(Books.BookType).filter(
    bookType => typeof this.booksType[bookType] === 'number'
  );

  loading = false;

  isModalOpen = false;

  form: FormGroup;

  constructor(private store: Store, private fb: FormBuilder) { }

  ngOnInit() {
    this.get();
  }

  get() {
    this.loading = true;
    this.store.dispatch(new GetBooks()).subscribe(() => {
      this.loading = false;
    });
  }

  createBook() {
    this.buildForm();
    this.isModalOpen = true;
  }

  buildForm() {
    this.form = this.fb.group({
      name: ['', Validators.required],
      type: [null, Validators.required],
      publishDate: [null, Validators.required],
      price: [null, Validators.required],
    });
  }

  //<== added save ==>
  save() {
    if (this.form.invalid) {
      return;
    }

    this.store.dispatch(new CreateUpdateBook(this.form.value)).subscribe(() => {
      this.isModalOpen = false;
      this.form.reset();
      this.get();
    });
  }
}

• We imported CreateUpdateBook.
• We added save method

Updating an existing book

BooksService

Open the books.service.ts in app\books\shared folder and add the getById and update methods.

getById(id: string): Observable<Books.Book> {
  return this.restService.request<void, Books.Book>({
    method: 'GET',
    url: `/api/app/book/${id}`
  });
}

update(updateBookInput: Books.CreateUpdateBookInput, id: string): Observable<Books.Book> {
  return this.restService.request<Books.CreateUpdateBookInput, Books.Book>({
    method: 'PUT',
    url: `/api/app/book/${id}`,
    body: updateBookInput
  });
}

CreateUpdateBook action

Open the books.actions.ts in app\store\actions folder and replace the content as below:

import { Books } from '../models';

export class GetBooks {
  static readonly type = '[Books] Get';
}

export class CreateUpdateBook {
  static readonly type = '[Books] Create Update Book';
  constructor(public payload: Books.CreateUpdateBookInput, public id?: string) { } //<== added id parameter ==>
}

• We added id parameter to the CreateUpdateBook action's constructor.

Open the books.state.ts in app\store\states folder and replace the save method as below:

@Action(CreateUpdateBook)
save(ctx: StateContext<Books.State>, action: CreateUpdateBook) {
    if (action.id) {
        return this.booksService.update(action.payload, action.id);
    } else {
        return this.booksService.create(action.payload);
    }
}

BookListComponent

Open book-list.component.ts in app\books\book-list folder and inject BooksService dependency by adding it to the constructor and add a variable named selectedBook.

import { Component, OnInit } from '@angular/core';
import { Store, Select } from '@ngxs/store';
import { BooksState } from '../../store/states';
import { Observable } from 'rxjs';
import { Books } from '../../store/models';
import { GetBooks, CreateUpdateBook } from '../../store/actions';
import { FormGroup, FormBuilder, Validators } from '@angular/forms';
import { NgbDateNativeAdapter, NgbDateAdapter } from '@ng-bootstrap/ng-bootstrap';
import { BooksService } from '../shared/books.service'; //<== imported BooksService ==>

@Component({
  selector: 'app-book-list',
  templateUrl: './book-list.component.html',
  styleUrls: ['./book-list.component.scss'],
  providers: [{ provide: NgbDateAdapter, useClass: NgbDateNativeAdapter }]
})
export class BookListComponent implements OnInit {
  @Select(BooksState.getBooks)
  books$: Observable<Books.Book[]>;

  booksType = Books.BookType;

  bookTypeArr = Object.keys(Books.BookType).filter(
    bookType => typeof this.booksType[bookType] === 'number'
  );

  loading = false;

  isModalOpen = false;

  form: FormGroup;

  selectedBook = {} as Books.Book; //<== declared selectedBook ==>

  constructor(private store: Store, private fb: FormBuilder, private booksService: BooksService) { }

  ngOnInit() {
    this.get();
  }

  get() {
    this.loading = true;
    this.store.dispatch(new GetBooks()).subscribe(() => {
      this.loading = false;
    });
  }

  //<== this method is replaced ==>
  createBook() {
    this.selectedBook = {} as Books.Book; //<== added ==>
    this.buildForm();
    this.isModalOpen = true;
  }

  //<== added editBook method ==>
  editBook(id: string) {
    this.booksService.getById(id).subscribe(book => {
      this.selectedBook = book;
      this.buildForm();
      this.isModalOpen = true;
    });
  }

  //<== this method is replaced ==>
  buildForm() {
    this.form = this.fb.group({
      name: [this.selectedBook.name || "", Validators.required],
      type: [this.selectedBook.type || null, Validators.required],
      publishDate: [
        this.selectedBook.publishDate
          ? new Date(this.selectedBook.publishDate)
          : null,
        Validators.required
      ],
      price: [this.selectedBook.price || null, Validators.required]
    });
  }

  save() {
    if (this.form.invalid) {
      return;
    }

    //<== added this.selectedBook.id ==>
    this.store.dispatch(new CreateUpdateBook(this.form.value, this.selectedBook.id))
      .subscribe(() => {
        this.isModalOpen = false;
        this.form.reset();
        this.get();
      });
  }
}

• We imported BooksService.
• We declared a variable named selectedBook as Books.Book.
• We injected BooksService to the constructor. BooksService is being used to retrieve the book data which is being edited.
• We added editBook method. This method fetches the book with the given Id and sets it to selectedBook object.
• We replaced the buildForm method so that it creates the form with the selectedBook data.
• We replaced the createBook method so it sets selectedBook to an empty object.
• We added selectedBook.id to the constructor of the new CreateUpdateBook.

Add "Actions" dropdown to the table

Open the book-list.component.html in app\books\book-list folder and replace the <div class="card-body"> tag as below:

<div class="card-body">
  <abp-table
    [value]="books$ | async"
    [abpLoading]="loading"
    [headerTemplate]="tableHeader"
    [bodyTemplate]="tableBody"
    [rows]="10"
    [scrollable]="true"
  >
  </abp-table>
  <ng-template #tableHeader>
    <tr>
      <th>{%{{{ "::Actions" | abpLocalization }}}%}</th>
      <th>{%{{{ "::Name" | abpLocalization }}}%}</th>
      <th>{%{{{ "::Type" | abpLocalization }}}%}</th>
      <th>{%{{{ "::PublishDate" | abpLocalization }}}%}</th>
      <th>{%{{{ "::Price" | abpLocalization }}}%}</th>
    </tr>
  </ng-template>
  <ng-template #tableBody let-data>
    <tr>
      <td>
        <div ngbDropdown container="body" class="d-inline-block">
          <button
            class="btn btn-primary btn-sm dropdown-toggle"
            data-toggle="dropdown"
            aria-haspopup="true"
            ngbDropdownToggle
          >
            <i class="fa fa-cog mr-1"></i>{%{{{ "::Actions" | abpLocalization }}}%}
          </button>
          <div ngbDropdownMenu>
            <button ngbDropdownItem (click)="editBook(data.id)">
              {%{{{ "::Edit" | abpLocalization }}}%}
            </button>
          </div>
        </div>
      </td>
      <td>{%{{{ data.name }}}%}</td>
      <td>{%{{{ booksType[data.type] }}}%}</td>
      <td>{%{{{ data.publishDate | date }}}%}</td>
      <td>{%{{{ data.price }}}%}</td>
    </tr>
  </ng-template>
</div>

• We added a th for the "Actions" column.
• We added button with ngbDropdownToggle to open actions when clicked the button.
• We have used to NgbDropdown for the dropdown menu of actions.

The final UI looks like as below:

Open book-list.component.html in app\books\book-list folder and find the <ng-template #abpHeader> tag and replace the content as below.

<ng-template #abpHeader>
    <h3>{%{{{ (selectedBook.id ? 'AbpIdentity::Edit' : '::NewBook' ) | abpLocalization }}}%}</h3>
</ng-template>

• This template will show Edit text for edit record operation, New Book for new record operation in the title.

Deleting a book

BooksService

Open books.service.ts in app\books\shared folder and add the below delete method to delete a book.

delete(id: string): Observable<void> {
  return this.restService.request<void, void>({
    method: 'DELETE',
    url: `/api/app/book/${id}`
  });
}

• Delete method gets id parameter and makes a DELETE HTTP request to the relevant endpoint.

DeleteBook action

Open books.actions.ts in app\store\actions folder and add an action named DeleteBook.

export class DeleteBook {
  static readonly type = '[Books] Delete';
  constructor(public id: string) {}
}

Open the books.state.ts in app\store\states folder and replace the content as below:

import { State, Action, StateContext, Selector } from '@ngxs/store';
import { GetBooks, CreateUpdateBook, DeleteBook } from '../actions/books.actions'; //<== added DeleteBook==>
import { Books } from '../models/books';
import { BooksService } from '../../books/shared/books.service';
import { tap } from 'rxjs/operators';

@State<Books.State>({
  name: 'BooksState',
  defaults: { books: {} } as Books.State,
})
export class BooksState {
  @Selector()
  static getBooks(state: Books.State) {
    return state.books.items || [];
  }

  constructor(private booksService: BooksService) { }

  @Action(GetBooks)
  get(ctx: StateContext<Books.State>) {
    return this.booksService.get().pipe(
      tap(booksResponse => {
        ctx.patchState({
          books: booksResponse,
        });
      }),
    );
  }

  @Action(CreateUpdateBook)
  save(ctx: StateContext<Books.State>, action: CreateUpdateBook) {
    if (action.id) {
      return this.booksService.update(action.payload, action.id);
    } else {
      return this.booksService.create(action.payload);
    }
  }

  //<== added DeleteBook ==>
  @Action(DeleteBook)
  delete(ctx: StateContext<Books.State>, action: DeleteBook) {
    return this.booksService.delete(action.id);
  }
}

• We imported DeleteBook .

• We added DeleteBook action listener to the end of the file.

Add a delete button

Open book-list.component.html in app\books\book-list folder and modify the ngbDropdownMenu to add the delete button as shown below:

<div ngbDropdownMenu>
  <!-- added Delete button -->
    <button ngbDropdownItem (click)="delete(data.id, data.name)">
        {%{{{ 'AbpAccount::Delete' | abpLocalization }}}%}
    </button>
</div>

The final actions dropdown UI looks like below:

Delete confirmation dialog

Open book-list.component.ts inapp\books\book-list folder and inject the ConfirmationService.

Replace the constructor as below:

import { ConfirmationService } from '@abp/ng.theme.shared';
//...

constructor(
    private store: Store, private fb: FormBuilder,
    private booksService: BooksService,
    private confirmationService: ConfirmationService // <== added this line ==>
) { }

• We imported ConfirmationService.
• We injected ConfirmationService to the constructor.

In the book-list.component.ts add a delete method :

import { GetBooks, CreateUpdateBook, DeleteBook } from '../../store/actions'; //<== added DeleteBook ==>

import { ConfirmationService, Confirmation } from '@abp/ng.theme.shared'; //<== added Confirmation ==>

//...

delete(id: string, name: string) {
    this.confirmationService
        .warn('::AreYouSureToDelete', 'AbpAccount::AreYouSure')
        .subscribe(status => {
        if (status === Confirmation.Status.confirm) {
            this.store.dispatch(new DeleteBook(id)).subscribe(() => this.get());
        }
    });
}

The delete method shows a confirmation popup and subscribes for the user response. DeleteBook action dispatched only if user clicks to the Yes button. The confirmation popup looks like below:

{{end}}

Next Part

See the next part of this tutorial.