github vaadin/platform 17.0.0.alpha3
Vaadin 17.0.0.alpha3
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latest releases: 24.4.0.beta1, 24.4.0.alpha25, 23.3.34...
pre-release3 years ago

Vaadin 17.0.0.alpha3

Vaadin consists of a set of web components, a Java web framework, configurable themes, tools and a set of app templates.

Visit vaadin.com to get started.

New and Noteworthy since 16.0.0

Here are the highlighted new and improved features in vaadin 17. To see the full list of bug fixes and improvements, check Included Projects and Change Log.

Framework

Features

  • A new client forms API for TypeScript (TS) views
    • New Binder API to associate a UI Field with a Model property.
    • Java Generator now produces Form Models for TS to make easy bind it to the UI elments.
    • Bean Validators in client side able to reuse Java Bean annotations, and to add custom validations
  • Live Reload in browser
  • Support for Url template

Fixes

  • Update router so as lifecycle callbacks are run always
  • clean up connect tokens in build info for production (#8253)
  • Fix endpoint serialization problems (#8095)
  • Fix custom Connect client
  • Fix encoded router URL and Query parameters
  • Fix lookup DOM elements inside the given context and not globally
  • Fixes in server router mechanism to handle correctly forward actions and others
  • Fixes in push unsusbcribe
  • App closes when location changes
  • Close previous UI after moving its children
     

Breaking changes

  • Removed the PWA install popup. Because beforeInstallPrompt was removed from browsers specs
  • Throwing instead of Warning when configuration annotations like @Push or @BodySize are not in the AppShellclass

Changes since 17.0.0.alpha2

Support

vaadin 17 is supported for one month after Vaadin 18 has been released. The latest LTS (long term support) version is Vaadin 14. More details of our release model are available on our roadmap page.

Vaadin also provides commercial support and warranty.

Included Projects and Change Log

Vaadin includes the following projects. Release notes with detailed change logs for each project are linked below.

Projects marked as (Pro) are available for users with Pro or Prime subscriptions. Everything else is free and open source.

Java Web Framework

Components

Themes

  • Vaadin Lumo theme (v1.6.0)
  • Vaadin Material theme (v1.3.2).

Router

Tools

Getting Started with Vaadin

App starters

The best way to get started with Vaadin is to go to https://vaadin.com/start and pick an app template for the technology stack you’re interested in.

Note

vaadin 17 starters are not available just yet in vaadin.com. You can use Vaadin 14 starter and manually change Vaadin version (see instructions below).

Manually changing Vaadin version for Java projects

Add the following contents to your project pom.xml. 

<dependencyManagement>
    ...
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-bom</artifactId>
        <version>17.0.0.alpha3</version>
        <type>pom</type>
        <scope>import</scope>
    </dependency>
    ...
</dependencyManagement>

<repositories>
    <repository>
        <id>vaadin-prereleases</id>
        <url>https://maven.vaadin.com/vaadin-prereleases</url>
    </repository>
</repositories>

<pluginRepositories>
    <pluginRepository>
        <id>vaadin-prereleases</id>
        <url>https://maven.vaadin.com/vaadin-prereleases</url>
    </pluginRepository>
</pluginRepositories>

Known Issues and Limitations

This is the prerelease version of vaadin 17 for evaluating a number of new features and bug fixes. The API in this prerelease version is not considered final and may change based on user feedback.

Flow

  • The Template-in-Template feature has some limitations
  • Links matching the context do not result in browser page load by default, instead they are handled with application routing. To opt-out, set the router-ignore attribute on the anchor element. This opt-out is needed for cases when native browser navigation is necessary, e. g., when using Anchor to link a StreamResource download.

Migrating from Vaadin 8

See the migration guide

Migrating from Vaadin 10-14

See the migration guide

Reporting Issues

We appreciate if you try to find the most relevant repository to report the issue in. If it is not obvious which project to add issues to, you are always welcome to report any issue at https://github.com/vaadin/platform/issues.

A few rules of thumb will help you and us in finding the correct repository for the issue:

  1. If you encounter an issue when using the HTML/JS API of a component or the component renders incorrectly, the problem is likely in the web component. The web component repositories are named like https://github.com/vaadin/vaadin-button
  2. If you encounter an issue when using the Java API of a component, the problem is likely in the Flow integration of the web component. The Flow component integration repositories are named like https://github.com/vaadin/vaadin-button-flow
  3. If you encounter an issue with Flow which does not seem to be related to a specific component, the problem is likely in Flow itself. The Flow repository is https://github.com/vaadin/flow
  4. If you encounter an issue with Designer, the repository is https://github.com/vaadin/designer
  5. If you encounter an issue with TestBench, the repository is https://github.com/vaadin/testbench
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