alfresco-ng2-components/docs/core/login.component.md

Added, Status, Last reviewed

Added	Status	Last reviewed
v2.0.0	Active	2018-03-19

Login component

Authenticates to Alfresco Content Services and or Alfresco Process Services.

Contents

• Basic usage

• Class members

  • Properties
  • Events

• Details

  • Handling events
  • Changing content
  • Custom logo and background
  • Customizing validation rules
  • Call an external identity provider to fetch the auth token
  • Controlling form submit execution behaviour
  • SSO login
  • Implicit Flow

• See Also

Basic usage

<adf-login 
    successRoute="/home">
</adf-login>

Class members

Properties

Name	Type	Default value	Description
backgroundImageUrl	string	"./assets/images/background.svg"	Path to a custom background image.
copyrightText	string	"© 2016 Alfresco Software, Inc. All Rights Reserved."	The copyright text below the login box.
disableCsrf	boolean		Prevents the CSRF Token from being submitted. Only valid for Alfresco Process Services.
fieldsValidation	any		Custom validation rules for the login form.
logoImageUrl	string	"./assets/images/alfresco-logo.svg"	Path to a custom logo image.
needHelpLink	string	""	Sets the URL of the NEED HELP link in the footer.
providers	string		Deprecated: 3.0.0
registerLink	string	""	Sets the URL of the REGISTER link in the footer.
showLoginActions	boolean	true	Should the extra actions (Need Help, Register, etc) be shown?
showRememberMe	boolean	true	Should the Remember me checkbox be shown? When selected, this option will remember the logged-in user after the browser is closed to avoid logging in repeatedly.
successRoute	string	null	Route to redirect to on successful login.

Events

Name	Type	Description
error	EventEmitter<LoginErrorEvent>	Emitted when the login fails.
executeSubmit	EventEmitter<LoginSubmitEvent>	Emitted when the login form is submitted.
success	EventEmitter<LoginSuccessEvent>	Emitted when the login is successful.

Details

Handling events

app.component.html

<adf-login 
    (success)="mySuccessMethod($event)"
    (error)="myErrorMethod($event)">
</adf-login>

app.component.ts

export class AppComponent {

    mySuccessMethod($event) {
        console.log('Success Login EventEmitt called with: ' + $event.value);
    }

    myErrorMethod($event) {
        console.log('Error Login EventEmitt called with: ' + $event.value);
    }
}

Changing content

You can replace the content of the header and footer of the Login component with your own custom content, as shown in the examples below:

<adf-login ...>
    <login-footer><ng-template>My custom HTML for the footer</ng-template></login-footer>
</adf-login>`

<adf-login ...>
    <login-header><ng-template>My custom HTML for the header</ng-template></login-header>
</adf-login>`

Also, any content that you put inside the <adf-login> tags will be rendered as part of the Login dialog:

<adf-login ...>
    <div>
        <div>Your extra content</div>
    </div>
</adf-login>

This is useful if you need to extend the functionality of the dialog with custom input fields handled by your application or parent component:

Custom logo and background

You can change the logo and background images using the backgroundImageUrl and logoImageUrl properties:

<adf-login 
    [backgroundImageUrl]="'http://images.freeimages.com/images/previews/638/wood-wall-for-background-1634466.jpg'"
    [logoImageUrl]="'http://images.freeimages.com/images/previews/eac/honeybee-with-a-house-1633609.jpg'">
</adf-login>

You can also bind to your component properties and provide values dynamically if you need to:

<adf-login
    [backgroundImageUrl]="myCustomBackground"
    [logoImageUrl]="myCustomLogo">
</adf-login>

Customizing validation rules

You can add to or modify the default validation rules of the login form if you need your own custom validation:

MyCustomLogin.component.html

<adf-login 
    [fieldsValidation]="customValidation"
    #alfrescologin>
</adf-login>

MyCustomLogin.component.ts

export class MyCustomLogin {
    
    @ViewChild('alfrescologin')
    alfrescologin: any;

    customValidation: any;

    constructor(public router: Router) {
        this.customValidation = {
            username: ['', Validators.compose([Validators.required, Validators.minLength(8), Validators.maxLength(10)])],
            password: ['', Validators.required]
        };
    }

    ngOnInit() {
        this.alfrescologin.addCustomValidationError('username', 'minlength', 'Username must be at least 8 characters.');
        this.alfrescologin.addCustomValidationError('username', 'maxlength', 'Username must not be longer than 11 characters.');
    }
}

Call an external identity provider to fetch the auth token

You can access an external provider to get an auth token for a user:

app.config.json

{
    "oauth2" : {
      "host": "http://myhost.com",
      "authPath": "/my-custom-auth/token",
      "clientId": "my-client-id",
      "secret": ""
    }
}

MyCustomLogin.component.html

<adf-login 
    [providers]="'OAUTH'"
    (success)="onMyAuthLogin($event)">
</adf-login>

MyCustomLogin.component.ts

export class MyCustomLogin {
 
    constructor(public router: Router) {
    }

    onMyAuthLogin($event) {
        console.log("My token " + $event.token.ticket)
        this.router.navigate(['/home']);
    }
}

Controlling form submit execution behaviour

The standard form submission system is suitable for most tasks but you can take full control of submission if you need to. Use the executeSubmit event to modify the submission process with your own code just after the form is submitted.

If you want to replace the submission process completely (rather than just extend it), you can use event.preventDefault() in the handler to avoid the default behavior. You could use this, for example, to customize the validation heavily or to present a summary of validation before submitting the form.

MyCustomLogin.component.html

<adf-login 
    (executeSubmit)="validateForm($event)" 
    #alfrescologin>
</adf-login>

MyCustomLogin.component.ts

export class MyCustomLogin {

    validateForm(event: any) {
        let values = event.values;
        
        // check if the username is in the blacklist
        if (values.controls['username'].value === 'invalidUsername') {
            this.alfrescologin.addCustomFormError('username', 'the
            username is in blacklist');
            event.preventDefault();
        }
    }
    
}

SSO login

Implicit Flow

If the 'app.config.json' or you used the host-setting component to use the SSO Oauth the login component will show only a button to login:

    "authType" :"OAUTH",
    "oauth2": {
      "host": "http://localhost:30081/auth/realms/myrealm",
      "clientId": "activiti",
      "scope": "openid",
      "secret": "",
      "implicitFlow": true,
      "silentLogin": false,
      "redirectUri": "/",
      "redirectUriLogout": "/logout"
    },

Note if the silentLogin property in the oauth2 configuration is true will not be possible to show the login page. with silentLogin true the application is automatically redirect to the authorization server when is not logged-in

Note that if you do not call event.preventDefault() then the default behaviour will execute after your custom code has completed.

See Also

• Logout directive