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Play Framework essentials

You're reading from   Play Framework essentials An intuitive guide to creating easy-to-build scalable web applications using the Play framework

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Product type Paperback
Published in Sep 2014
Publisher
ISBN-13 9781783982400
Length 200 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Julien R Foy Julien R Foy
Author Profile Icon Julien R Foy
Julien R Foy
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Toc

Table of Contents (9) Chapters Close

Preface 1. Building a Web Service FREE CHAPTER 2. Persisting Data and Testing 3. Turning a Web Service into a Web Application 4. Integrating with Client-side Technologies 5. Reactively Handling Long-running Requests 6. Leveraging the Play Stack – Security, Internationalization, Cache, and the HTTP Client 7. Scaling Your Codebase and Deploying Your Application Index

Generating HTML forms


The two routes of our application using the GET verb (Items.list and Items.details) now return an HTML page. However, the remaining routes are not currently reachable by our web users. Web browsers can perform POST requests only when an HTML form is submitted or if some client-side code sends an XmlHTTPRequest.

Let's add an HTML page that contains a form to create new items, which will look like the following:

First, we need to define an HTTP endpoint for the page containing the form and then write the according route:

GET     /items/add     controllers.Items.createForm

Note

Note that as routes are tried in their definition order, this route must be defined before the Items.details one, as their URL pattern overlap.

Then, we define the corresponding action in the Items controller:

val createForm = Action {
  Ok(views.html.createForm())
}

The Java equivalent code is as follows:

public static Result createForm() {
    return ok(views.html.createForm.render());
}

This action just...

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