Only 3 parameters provided for onContentPrepare in Dynamic Get/SiteView

Chris Paschen commented

2018-02-28 22:42:30 +00:00

Steps to reproduce the issue

Created Admin views, Dynamic Gets and Site Views to display a list (getListQuery) that links to the individual getItem-related Site View.
Link within the getListQuery (Add PHP after getting the items) is this:

if (isset($items) && $items)
{
	foreach ($items as $nr => &$item)
	{
		//build people slug
		$item->people_link = JRoute::_([[[Component]]]HelperRoute::getPeopleBioRoute($item->slug));
	}
}

Expected result

Links display the individual site view page (based on the getItem dynamic get).

Actual result

When clicking on the link get error message:

Too few arguments to function plgContentJdForm::onContentPrepare(), 3 passed in /.../httpdocs/libraries/joomla/event/event.php on line 70 and exactly 4 expected

System information (as much as possible)

OS Name & Version: x86_64-redhat-linux-gnu, compiled by GCC gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18), 64-bit
MySql Version: 5.5.56
Apache Version:
PHP Version: 7.1.14
Joomla Version: 3.8.5
JCB Version: 2.6.17
Browser: Chrome

Additional comments

In the components/com_COMPONENT/models/peoplebio.php file, in the "Load the JEvent Dispatcher" area there are 3 fields of the type EDITOR that each have lines similar to this:

$_people_education = new stdClass();
$_people_education->text =& $data->people_education; // value must be in text
// Since all values are now in text (Joomla Limitation), we also add the field name (people_education) to context
$this->_dispatcher->trigger("onContentPrepare",array('com_cmd_systems.peoplebio.people_education',&$_people_education,&$this->params));

According to the Joomla docs for onContentPrepare (https://docs.joomla.org/Plugin/Events/Content#onContentPrepare) this method is expecting 4 parameters, yet only 3 are being generated by JCB.

### Steps to reproduce the issue Created Admin views, Dynamic Gets and Site Views to display a list (getListQuery) that links to the individual getItem-related Site View. Link within the getListQuery (Add PHP after getting the items) is this: ``` if (isset($items) && $items) { foreach ($items as $nr => &$item) { //build people slug $item->people_link = JRoute::_([[[Component]]]HelperRoute::getPeopleBioRoute($item->slug)); } } ``` ### Expected result Links display the individual site view page (based on the getItem dynamic get). ### Actual result When clicking on the link get error message: > Too few arguments to function plgContentJdForm::onContentPrepare(), 3 passed in /.../httpdocs/libraries/joomla/event/event.php on line 70 and exactly 4 expected ### System information (as much as possible) - OS Name & Version: x86_64-redhat-linux-gnu, compiled by GCC gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18), 64-bit - MySql Version: 5.5.56 - Apache Version: - PHP Version: 7.1.14 - Joomla Version: 3.8.5 - JCB Version: 2.6.17 - Browser: Chrome ### Additional comments In the components/com_COMPONENT/models/peoplebio.php file, in the "Load the JEvent Dispatcher" area there are 3 fields of the type EDITOR that each have lines similar to this: ``` $_people_education = new stdClass(); $_people_education->text =& $data->people_education; // value must be in text // Since all values are now in text (Joomla Limitation), we also add the field name (people_education) to context $this->_dispatcher->trigger("onContentPrepare",array('com_cmd_systems.peoplebio.people_education',&$_people_education,&$this->params)); ``` According to the Joomla docs for onContentPrepare (https://docs.joomla.org/Plugin/Events/Content#onContentPrepare) this method is expecting 4 parameters, yet only 3 are being generated by JCB.

Chris Paschen commented

2018-02-28 22:46:45 +00:00

Author

I was able to just use custom code tags to override this area and add a 4th parameter - I just added 1 and it worked fine (although the individual display is just 1 page, so not sure what would happen if it were more).

NOTE: In doing another test, in a WAMP installation, the system functions perfectly fine with only 3 parameters provided.
The initial dev site and test sites are on LAMP instead of WAMP. The LAMP sites were older sites (3.7.x ish) that have been upgraded. The WAMP site was a clean install of J3.8.5.

WAMP Server Details

OS Name & Version: Windows NT DESKTOP-PASCHEN 10.0 build 16299 (Windows 10) AMD64
MySql Version: 5.7.19
Apache Version: 2.4.27
PHP Version: 7.1.19
Joomla Version: 3.8.5
JCB Version: 2.6.17
Browser: Chrome

I was able to just use custom code tags to override this area and add a 4th parameter - I just added 1 and it worked fine (although the individual display is just 1 page, so not sure what would happen if it were more). NOTE: In doing another test, in a WAMP installation, the system functions perfectly fine with only 3 parameters provided. The initial dev site and test sites are on LAMP instead of WAMP. The LAMP sites were older sites (3.7.x ish) that have been upgraded. The WAMP site was a clean install of J3.8.5. ### WAMP Server Details OS Name & Version: Windows NT DESKTOP-PASCHEN 10.0 build 16299 (Windows 10) AMD64 MySql Version: 5.7.19 Apache Version: 2.4.27 PHP Version: 7.1.19 Joomla Version: 3.8.5 JCB Version: 2.6.17 Browser: Chrome

Chris Paschen commented

2018-02-28 22:48:42 +00:00

Author

Not sure that this is really a 'problem' for JCB or if there is either some 'legacy' issue on the initial site, or a conflict with something else; however, considering the specs (at least the version posted) require 4 parameters for onContentPrepare, it would make sense if 4 were provided.

Twincarb commented

2018-03-01 13:41:32 +00:00

(Migrated from github.com)

I have seen this issue which was evident with one plugin which was loading

public function onContentPrepare($context, &$article, &$params, $limitstart)

The error message I recieve is:

0 - Too few arguments to function plgContentAllWeblinks::onContentPrepare(), 3 passed in
/.../httpdocs/libraries/joomla/event/event.php on line 70 and exactly 4 expected

My work around at the moment is to disable the plugin making the call.

Is it safe to presume if there is one function calling all 4 parameters then all of them will need to call all 4?
If JCB isn't generating all 4 parameters I would suspect that it should be doing so.

I have seen this issue which was evident with one plugin which was loading ``` public function onContentPrepare($context, &$article, &$params, $limitstart) ``` The error message I recieve is: ``` 0 - Too few arguments to function plgContentAllWeblinks::onContentPrepare(), 3 passed in /.../httpdocs/libraries/joomla/event/event.php on line 70 and exactly 4 expected ``` My work around at the moment is to disable the plugin making the call. Is it safe to presume if there is one function calling all 4 parameters then all of them will need to call all 4? If JCB isn't generating all 4 parameters I would suspect that it should be doing so.

Llewellyn commented

2018-03-01 13:49:25 +00:00

Okay so what should this forth parameter be? I mean yes I see it says page, but what value in the module can be this?

I see in the article view.html.php it uses

$offset = $this->state->get('list.offset');

And then

$dispatcher->trigger('onContentPrepare', array ('com_content.article', &$item, &$item->params, $offset));

This offset seems to be the:

$offset = $app->input->getUInt('limitstart');

Inside the populateState of the module.

This issue is JCB does not use that filter in its populateState, and secondly it is irrelevant to the text/value it self.

So what value should we pass?

Okay so what should this forth parameter be? I mean yes I see it says page, but what value in the module can be this? I see in the article view.html.php it uses ``` $offset = $this->state->get('list.offset'); ``` And then ``` $dispatcher->trigger('onContentPrepare', array ('com_content.article', &$item, &$item->params, $offset)); ``` This offset seems to be the: ``` $offset = $app->input->getUInt('limitstart'); ``` Inside the populateState of the module. > This issue is JCB does not use that filter in its populateState, and secondly it is irrelevant to the text/value it self. So what value should we pass?

Twincarb commented

2018-03-01 14:28:33 +00:00

(Migrated from github.com)

On the model I added

, $page = 0

Which allows the page to show correctly, on a search of the Joomla repository the options in use are as above or

, 0

Defaulting it to 0 would make sense when there isnt a 4th parameter to be set.

https://github.com/joomla/joomla-cms/search?p=1&q=onContentPrepare&type=&utf8=%E2%9C%93

On the model I added ``` , $page = 0 ``` Which allows the page to show correctly, on a search of the Joomla repository the options in use are as above or ``` , 0 ``` Defaulting it to 0 would make sense when there isnt a 4th parameter to be set. https://github.com/joomla/joomla-cms/search?p=1&q=onContentPrepare&type=&utf8=%E2%9C%93

Llewellyn commented

2018-03-01 14:50:45 +00:00

Please test the latest push to staging branch and let me know if this resolves the issue.

👍 1

Twincarb commented

2018-03-01 15:13:43 +00:00

(Migrated from github.com)

Just pulled staging and tested here and it works as expected. Many thanks

Only 3 parameters provided for onContentPrepare in Dynamic Get/SiteView #237

Steps to reproduce the issue

Expected result

Actual result

System information (as much as possible)

Additional comments

WAMP Server Details