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http://www.stripesframework.org/jira/browse/STS-813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12235#comment-12235
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Nikolaos commented on STS-813:
------------------------------
This patch seems quite interesting as we are currently playing around with JSON
in our application.
One thing that initially came up is that there is a class that is "not"
included in the patch:
import org.ienroll.Configuration; // <== Missing class
...
ApplicationContext ac =
WebApplicationContextUtils.getWebApplicationContext(servletContext);
Configuration config = ac.getBean(Configuration.class);
String baseUrl = config.getBaseUrl();
What exactly does this method do?
--Nikolaos
> Transparent AJAX form submission and validation using JSON
> ----------------------------------------------------------
>
> Key: STS-813
> URL: http://www.stripesframework.org/jira/browse/STS-813
> Project: Stripes
> Issue Type: New Feature
> Components: ActionBean Dispatching
> Affects Versions: Release 1.5.5
> Environment: All
> Reporter: Andrew Jaquith
> Labels: ajax, binding, jquery, json, message
> Attachments: stripes-json-jquery.zip
>
>
> To support transparent integration of Stripes with JavaScript frameworks like
> jQuery, I've created a custom Stripes interceptor and resolution, plus some
> client-side JavaScript. What this allows JSP authors to do is bind a simple
> stripes() function to a form button element. The submission to Stripes is
> done using a background XHR, with all validation errors and redirects handled
> gracefully. The results look just like what you'd see with a full-page
> POST-and-render page cycle. And best of all, ActionBeans do not need to be
> re-written at all. Here's the basic flow:
> 1. The AjaxInterceptor intercepts the CustomValidation and EventHandling
> events. If the HTTP request does contains the header 'X-Requested-With,' and
> its value is 'XMLHttpRequest,' the request is assumed to be an AJAX request.
> 2. AjaxInterceptor calls proceed() to see if other interceptors (or lifecycle
> stages) have returned a non-null Resolution.
> 3. If the non-null Resolution is a RedirectResolution, it is wrapped by a
> JsonResolution whose .redirect property contains the URL the user should be
> directed to.
> 4. If the results of the bean processing generated validation errors or
> messages, a new JsonResolution is returned with its .fieldErrors,
> .globalErrors and .messages properties set appropriately. The contents of
> these properties are all localized Strings that are rendered identically to
> those output by the stripes:messages and stripes:errors tags. The locale is
> determined from the ActionBeanContext.
> 5. The JsonResolution is finally executed by the Stripes controller, it is
> converted into a JSON object and sent back to the client.
> 6. After the client receives the JSON response, error strings are injected
> into the HTML DOM. By default, messages are injected into the element named
> ${eventName}Messages, and global errors into ${eventName}Errors. Field
> errors, if these are rendered, are added to the right of input elements whose
> names attributes match the fields. For example, an error for field 'password'
> would be injected adjacent to the input named 'password.' The invalid input
> elements themselves have the class 'error' added, just like the Stripes tags
> do.
> Requirements: the server-side code uses Jackson to marshal JSON output. The
> client Javascript assumes jQuery, although it could be readily adapted to
> other frameworks.
> Key benefits:
> - Zero extra coding required for ActionBeans to support Ajax calls
> - Background submission of forms, with validation
> - Re-use of error and message headers, footers and before/after message and
> error formats, as defined in the Stripes localization bundle files
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