I want to display an image in my webflow wich comes from my domain object.
The domain object has an byte[] Array holding an image. The "image" method in my controller delivers the image to browser. This works fine.
In my webflow I'm doing this:
<img src="${createLink(controller:'shop', action:'image', id:shopInstance.id)}">
I can see the image in my frontend (in browser) but it reloads each time i click "next" or change my state in webflow because the image url contains a param that changes each event in webflow.
The created image url (example above) looks like this:
http://localhost:8080/project/shop/image/2?execution=e2s5
I don't want that the execution param is delivered into my image url. How can i fix this?
My guess is that this is a bug. A work around I used is the following
${createLink(controller: 'controller', action: 'action').replaceAll(/\?.*$/, "")}
This will use a regex to remove the execution parameter.
Not sure why you're getting that execution param but you could try: <img src="${resource(dir: 'shop/image', file: shopInstance.id)}"> and make sure the UrlMappings.groovy file has a mapping for 'ship/image' to the proper controller.
As of Grails 2.0.4, look at ApplicationTagLib.groovy, you can see
if (request['flowExecutionKey']) {
params."execution" = request['flowExecutionKey']
urlAttrs.params = params
if (attrs.controller == null && attrs.action == null && attrs.url == null && attrs.uri == null) {
urlAttrs[LinkGenerator.ATTRIBUTE_ACTION] = GrailsWebRequest.lookup().actionName
}
}
So Grails is forcing every link rendered within webflow to include that execution params. It looks like bug to me.
Related
I think the issue is with the UrlMapping file or some configuration file that I don't know about but I didn't see it addressed in this site so I'm posting for help.
I have a UrlMappings.groovy with:
"/lookupMap/$fromVal/$toVal/xml/$id**" (controller:"lookup, action:"returnMapXml", formats=['xml'], method:"GET")
and the controller is:
def returnMapXml = {
if (params.id) {
print params.id + "\n";
try {
def result = getLookup.result(params.fromVal, params.toVal, params.id)
render ...yadda yadda
}
}
}
This is a REST service. My problem happens when someone enters an ID value with either a pound sign (#) or question mark (?), the value is truncated at that character. For example the output of ID (per the print line in the code) for this: localhost:8080/productdefinition/lookupMap/Denver/Toronto/carton OR container OR box? OR bag would be carton OR container OR box It removes the ? and everything after it. This happens somewhere either before it gets to the UrlMappings file or when that directs the call to the controller. Either way, how can I stop this and where, which file do I fix this in? I don't have access to the server so I can't alter any URL encodings; this has to be a code update. Any help/direction would be appreciated.
I have problem:
When I fill in form and pressing add button page is reloaded, but no data is added to the database.
Code of NewsController, add action is below:
public function addAction() {
$form = new AddNewsForm();
$form->get('submit')->setValue('Add1');
$request = $this->getRequest();
if ($request->isPost()) {
$form->setData($request->getPost());
var_dump($form->isValid());
if ($form->isValid()) {
echo "form is valid";
$objectManager = $this->getServiceLocator()->get('Doctrine\ORM\EntityManager');
$blogpost = new NewsItem();
$blogpost->exchangeArray($form->getData());
$blogpost->setCreated(time());
$blogpost->setUserId(0);
$objectManager->persist($blogpost);
$objectManager->flush();
// Redirect to list of blogposts
return $this->redirect()->toRoute('news');
}
}
return array('form' => $form);
}
Class AddNewsForm is included as use \News\Form\AddNewsForm as AddNewsForm; above.
I tried to debug my code and realized, that $form->isValid() return false all time. I tried to fill in all fields of form — it says that form is not valid. If not all fields are filled in it false too.
The problem is with validation, I think, so I will add here how I assing filter to the form. This is how I assing filter to my form:
$this->setInputFilter(new AddNewsInputFilter());
Class AddNewsInputFilter is included by this:
use \News\Form\AddNewsInputFilter as AddNewsInputFilter;
I don't think it is good to paste there ~100 lines of code, so I will just give a link to files in my github repo (full code of controllers/files available here):
AddNewsForm.php — file, where I create the form
AddNewsInputFilter.php — file, where I set fil
NewsController.php — file, controller, where I call created form
Repository link — root dir of my module
So the problem is that $form->isValid(); doesn't show is form valid or not properly and I don't know why. Note, that request is getting properly and first condition is passed (but second is not passed). It is the problem, thats why I am writing here.
How I can solve it?
Thanks is advance!
try var_dump($form->getMessages()) and var_dump($form->getInputFilter()->getMessages()) in controller(after calling $form->isValid()) or in view . see what error you getting and on witch element ?
NOTICE : getMessages() will be empty if $form->isValid() has not been called yet,
UPDATE : do this in controller :
var_dump($form->isValid());
var_dump($form->getMessages())
var_dump($form->getInputFilter()->getMessages())
I would like to add an URL fragment #top to a HtmlOutcomeTargetLink, but cant figure out how. For an HtmlOutputLink I just use the following:
HtmlOutputLink link = new HtmlOutputLink();
String urlWithFragment = url + "#top";
link.setValue(urlWithFragment);
How to acomplish this for a HtmlOutcomeTargetLink?
Unfortunately the following does not work:
HtmlOutcomeTargetLink link = new HtmlOutcomeTargetLink();
String urlWithFragment = context.getViewRoot().getViewId() + "#top";
link.setOutcome(urlWithFragment);
Thanks for your help!
The outcome of HtmlOutcomeTargetLink (the <h:link>) only takes navigation case outcomes, not URLs. The navigation case outcomes do not support URL fragments. Those needs to be set as a separate fragment attribute.
link.setFragment("top");
See also:
<h:link> tag documentation
Update: wait, there's no setter for that on the UIOutcomeTarget parent class. I suspect an oversight in the generated code (funnily it's mentioned here in Mojarra snapshot docs and here in a MyFaces testcase). You should be able to set it directly on the attribute map:
link.getAttributes().put("fragment", "top");
I have a URL like:
/test/abs/rdc/tx.js
and I need to be able to get the /abs/rdc/tx.js part for my controller.
I tried (in URLMapping):
/test/$target**
and it returns everything but the .js
I have
grails.mime.file.extensions = true
Any ideas?
UrlMapping and file name extension didn't work as it always returns .html
Grails 2.0 has made some changes to the way the format is parsed. Using the example from the link you provided, just update the code to use response.format:
def path = params.path
if (!FilenameUtils.getExtension(path) && response.format) {
path += ".${response.format}"
}
More info is in the manual under Content Negotiation. Scroll down to the section titled Request format vs. Response format.
You can try this one:
//Grails 2.3.x
"/$controller/$action?/$id?(.${format})?"{
constraints {
// apply constraints here
}
}
I've looked around but could not find a way of simply including or rendering *.html files in Grails. My application needs to g.render or <g:render> templates which are delivered as html files. For this, as we know, html files have to be converted to _foo.gsp files in order to get rendered. I am totally surprised as to why isn't there a direct support for html or is there one??
Thanks!
One obvious option is to simply rename your HTML files from foo.html to _foo.gsp and then use <render template="foo">. However this is so obvious that I'm sure you've already thought of it.
If you simply want to render a HTML file from within a controller you can use the text parameter of the render controller method
def htmlContent = new File('/bar/foo.html').text
render text: htmlContent, contentType:"text/html", encoding:"UTF-8"
If you want to do the same thing from within a .gsp, you could write a tag. Something like the following (untested) should work:
import org.springframework.web.context.request.RequestContextHolder
class HtmlTagLib {
static namespace = 'html'
def render = {attrs ->
def filePath = attrs.file
if (!file) {
throwTagError("'file' attribute must be provided")
}
def htmlContent = new File(filePath).text
out << htmlContent
}
}
You can call this tag from a GSP using
<html:render file="/bar/foo.html"/>
What is it you are trying to accomplish?
Render html from a controller?
In that case, all you should have to do is redirect the user to file from your control.
redirect(uri:"/html/my.html")
Use html-files instead of gsp template-files?
Thing is, Grails is a "Convention over Configuration"-platform and that means you will have to do some things "the Grails way". The files needs the _ and the .gsp but the name can be whatever you like even if it's easier when you use the same name as the controller. What you gain from doing that is the knowledge that every developer that knows grails and comes into your project will understand how things are tied together and that will help them get started quickly.
Little bit fixed the Don's example, works fine for me
import org.apache.commons.io.IOUtils
class HtmlTagLib {
static namespace = 'html'
def render = {attrs ->
def filePath = attrs.file
if (!filePath) {
throwTagError("'file' attribute must be provided")
}
IOUtils.copy(request.servletContext.getResourceAsStream(filePath), out);
}
}
I wanted to write static html/ajax pages hosted in grails app (v2.4.4), but use the controller for the url rewrite. I was able to accomplish this by moving the file to web-app/ (for ease of reference), and simply use the render() method with 'file' and 'contentType' params, such as:
// My controller action
def tmp() {
render file: 'web-app/tmp.html', contentType: 'text/html'
}
Note: I only tried this using run-app, and haven't packaged a war and deployed to tomcat, yet.
Doc: http://grails.github.io/grails-doc/2.4.4/ref/Controllers/render.html
Closure include = { attr ->
out << Holders.getServletContext().getResource(attr.file).getContent();
}
It is relative to the web-app folder of your grails main application
I was able to use #momo's approach to allow inclusion of external files for grails rendering plugin, where network paths would get botched in higher environments - mine ended up like:
def includeFile = { attr ->
URL resource = Holders.getServletContext().getResource(attr.file)
InputStream content = resource.getContent()
String text = content?.text
log.info "includeFile($attr) - resource: $resource, content.text.size(): ${text?.size()}"
out << text
}