Joomla: Plugins that modify Categories - plugins

I am trying to make a plugin for Joomla that mimics all the changes you do on content categories in a menu item. So adding, deleting and editing the name of a category in a specific article will also make the same changes on a menu item.
A content plugin has events such as onBeforeContentSave and onAfterDisplayContent that allow you to process that data. How do I do the same thing for categories?

Unfortunately, there isn't an onCategorySave event. The best approach I can think of would be to create a system plugin and check the task and option request variables for values of save and com_categories. Your plugin would look something like this:
<?php
defined('_JEXEC') or die('Restricted access');
jimport('joomla.plugin.plugin');
class plgSystemCategorysave extends JPlugin
{
function onAfterInitialise()
{
if (!JFactory::getApplication()->isAdmin()) {
return; // Dont run in frontend
}
$option = JRequest::getCmd('option', '');
$task = JRequest::getCmd('task', '');
if ($option == 'com_categories' && $task == 'save') {
// your processing code here
}
}
}

Related

Magento2 custom price render on product page

How to format the product view page price differently from the one from category page ( and possible others ) ?
If I change in my child theme the:
app/design/frontend/VENDOR/my_theme/Magento_Catalog/templates/product/price/final_price.phtml
The price is being changed on both pages (category and product);
I have tried several approaches but it seems that this price rendering mechanism is complicated as hell in Magento2.
Thanks!
<?php
try {
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$request = $objectManager->get(‘Magento\Framework\App\Action\Context’)->getRequest();
$currentPageXML = $request->getFullActionName();
echo $currentPageXML; //catalog_product_view is product detail page controller action
} catch (Exception $e) {}
?>
The above code will help you get the current area of the environment being accessed, and then you can apply a logic
if ($currentPageXML=="catalog_product_view") {
// render my custom need
} else {
// keep the actual code intact.
}
You are facing a problem because same phtml file is being used by both the catalog and product page, so a change in this file will be reflected everywhere.
I hope this will help you.

How can I render preview of FE plugin diplayed in Page module

I have developed TYPO3 (6.2) extensions with some FE plugins.
I need to change informations about plugin, which is displayed in the backend on page view.
Now only Title and name of plugin is displayed ...
I have used flexforms for configure the plugin and I would like to show some of configuration on the plugin "placeholder" in the backend.
I remember, I read some documentation how to do it a few years ago, but I can't find it anymore...
Does anyone know the right way to do it?
If I understood well you are asking for ContentElement preview. You need to use cms/layout/class.tx_cms_layout.php hook for this, here's quite nice gist
just two additions:
don't use t3lib_extMgm class it's removed since 7.x you can register this hook just with:
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['cms/layout/class.tx_cms_layout.php']['tt_content_drawItem'][$_EXTKEY]
= 'EXT:your_ext/Classes/Hooks/PageLayoutView.php:\Vendor\YourExt\Hooks\PageLayoutView';
Depending on how did you register the plugin (didn't mention) you can also need to check the $row['list_type'] as your $row['CType'] may be just generic list.
Sample class with value from FlexForm field
<?php
namespace Vendor\YourExt\Hooks;
class PageLayoutView implements \TYPO3\CMS\Backend\View\PageLayoutViewDrawItemHookInterface {
public function preProcess(\TYPO3\CMS\Backend\View\PageLayoutView &$parentObject, &$drawItem, &$headerContent, &$itemContent, array &$row) {
if ($row['CType'] == 'list' && $row['list_type'] == 'yourext_yourplugin') {
$drawItem = false;
$linkStart = '<a href="#" onclick="window.location.href=\'../../../alt_doc.php?returnUrl=%2Ftypo3%2Fsysext%2Fcms%2Flayout%2Fdb_layout.php%3Fid%3D' . $row['pid'] . '&edit[tt_content][' . $row['uid'] . ']=edit\'; return false;" title="Edit">';
$linkEnd = '</a>';
$headerContent =
$linkStart .
"<strong>Selected slides</strong>" .
$linkEnd;
$ffXml = \TYPO3\CMS\Core\Utility\GeneralUtility::xml2array($row['pi_flexform']);
$itemContent =
$linkStart .
$ffXml['data']['sDEF']['lDEF']['settings.myFlexField']['vDEF'] .
$linkEnd;
}
}
}

Symfony 2 Forms - add new item to Collection server-side, depending on button clicked

I have a form which contains a Collection of an unspecified number of subforms. I want to have functionality allowing the user to add a new, blank item to the Collection for them to fill in. The Symfony docs tell us how to do this using Javascript clientside to add new blank form controls, which are then submitted and persisted as normal, but I'd like to do it serverside in the controller, without Javascript.
The problem I'm encountering is to do with the way Symfony Forms work. I have an "Add" button added to my main form, and I intend to detect whether it is that button which has been clicked, so that I can add the blank item to the Collection and re-render the form. But to detect the click I need to call $this->createForm and at that point the form is fixed with the original set of items, it's too late to add an extra one.
//Symfony Action
//A Person has many Selections
$person = $this->getPerson($id)
//All fields are frozen at this point, according to data in $person!
$form = $this->createForm(new SelectionsType($lookups), $person);
$form->handleRequest($request);
//Ideally I'd somehow do this test earlier, but I need $form to do it...
if ($form->get('add')->isClicked() )
{
//TOO LATE!
$person->getSelections()->add(new Selection() );
}
if ($form->isValid())
{
if ($form->get('save')->isClicked() )
{
//Persist
}
}
//Render page etc
Things I've thought about:
Putting the Add button in a completely different form on the same page, which submits to a different Action which can then do some preparatory work before forwarding to the main Action above
Inspecting submitted HTTP data directly to note that Add has been clicked (shame not to use the standard Symfony method)
Give up and use Javascript as suggested (it might work in this example, but I'd like to have the option of carrying out server-side activity (without AJAX...) as part of adding the new blank item)
How can I best achieve this in a proper Symfony way?
EDIT Just seen this: https://github.com/symfony/symfony/issues/5231, which is essentially a feature request to allow what I'm after. One suggestion a commenter makes is to add a blank item to the Collection and then remove it if it's not needed - I don't know how one would do that, but it sounds promising.
ANOTHER EDIT It occurs to me that, because I need two different aspects of the $form I'm creating, I could maybe just make the $form, use it to handle the request, detect the button click, and then throw that $form away, before altering my model and creating another $form. I don't know if that would somehow fall foul of some rules about handling the submission twice.
I'm not 100% but I think you could do the following...
//Symfony Action with (Request $request, ...)
//A Person has many Selections
$person = $this->getPerson($id)
//All fields are frozen at this point, according to data in $person!
$form = $this->createForm(new SelectionsType($lookups), $person);
if ($request->isMethod('POST')) {
$form->submit($request);
if ($form->get('add')->isClicked()) {
// Add thing
} elseif ($form->isValid()) {
// or
// } elseif ($form->get('save')->isClicked() && $form->isValid()) {
// Persist and what not
}
}
//Render page etc
I haven't tested it so I don't know whether it will trigger the form errors (or if it will actually work) so if it does (or it doesn't) I apologise.
What I did in the end was have my Add button hit a separate Action, which then delegates to the main action with a flag to say "add a new Selection", as below:
public function selectionsAddAction(Request $request, $id)
{
return $this->selectionsAction($request, $id, true);
}
public function selectionsAction(Request $request, $id, $addNew = false)
{
$person = $this->getPerson($id);
//Also use "add mode" if we just deleted the last one!
if (!$person->getSelections()->count())
{
$addNew = true;
}
//$addNew is set by a separate action, hit by a different form with the Add button in
if ($addNew)
{
$person->getSelections()->add(new Selection() );
}
//We now have the right number of items, and can build the form!
$form = $this->createForm(new SelectionsType($lookups), $person);
//...
}

Configuring Single RTE Wrapper for Multiple Classes - Typoscript/Typo3

I'm trying to write Typoscript that will configure the Typo3 Rich Text Editor to wrap a given element with more than one class.
In the project's TsConfig/Page/rte.txt file, I have:
RTE {
classes {
button {
name = Button
}
}
However, I'd like to create a wrapper that would give the element more than just a single class. The below code doesn't work, but illustrates what I'm trying to accomplish:
RTE {
classes {
button {
name = Button
}
button danger {
name = Dangerous Button
}
}
According to this article, this doesn't seem to be possible, but I thought I'd ask and see if someone out there got crafty with their Typoscript and was able to accomplish this.
I tried everything to handle styles for tables that way, but there is currently no way to handle more than one CSS-Class for a RTE style definition.
The only way to handle this, is creating new CSS classes and extend the available button styles via LESS or SCSS.
In TYPO3 7 you can use this following RTE configuration to use multiple classes. The magic happens in the class-definition with the attribute "required"
RTE {
default {
proc.allowedClasses := addToList(btn-dark)
buttons.link.properties.class.allowedClasses := addToList(btn-dark)
}
classes.btn-dark {
name = Dark-Button
requires = btn btn-small
}
classesAnchor.buttonDark {
class = btn-dark
type = page
}
}

Preloader in Wicket Application

In a wicket application on search event it takes few secons and sometimes minutes to show the result as its a long data . I want to show a preloader while the data is fetched from the database to let the user know something is going on when they click search . I am very new to wicket application , dont understands the things very deeply but I find AjaxLazyPreloader but as I said I want to show the preloader when the search method is called ...I am sharing the SearchSubmit method ...
private void processSearchSubmit(AjaxRequestTarget ajaxRequestTarget) {
ajaxRequestTarget.add(tableHolder);
ajaxRequestTarget.add(productTableHolder);
if (zipcode == null) {
ajaxRequestTarget
.appendJavaScript("$().toastmessage('showWarningToast','Please enter a zipcode')");
} else if (!ZipCodeValidator.isValid(zipcode)) {
useZones = true;
currentZone = zipcode;
ajaxRequestTarget.add(tableHolder);
if (searchProduct != null) {
ajaxRequestTarget.add(productTableHolder);
if (lstProduct.getList().size() == 0) {
ajaxRequestTarget
.appendJavaScript("$().toastmessage('showErrorToast','Sorry! This product is not avialable .')");
}
}
} else if (lstMerchants.getList().size() == 0) {
ajaxRequestTarget
.appendJavaScript("$().toastmessage('showWarningToast','Sorry! There are currently no services')");
}
if (ZipCodeValidator.isValid(zipcode)) {
ajaxRequestTarget.add(tableHolder);
if (searchProduct != null && !searchProduct.equals("")) {
ajaxRequestTarget.add(productTableHolder);
if (lstProduct.getList().size() == 0) {
ajaxRequestTarget
.appendJavaScript("$().toastmessage('showErrorToast','Sorry! This product is not avialable in this zip code or zone.')");
}
}
}
}
I want when this method is called till the times it fetch the result data , it should show a preloader or spinner . Can anybody suggest how to do that .??
If you need to call long execution method by clicking button check this answer.
You can also use AjaxLazyLoadPanel, check this demo (it's Java part and html part)
Either use an AjaxLazyLoadPanel or an IndicatingAjaxLink/-Button. Both will work fine in either normal or Ajax calls.
To use an AjaxLazyLoadPanel: create a subclass of AjaxLazyLoadPanel which loads the panel you want to display and add it to the AjaxRequest.
IndicatingAjaxLinks just display a spinner while the request is being processed and can be used straightforward in your current application. Use this instead of the button/link you use for formsubmits now.