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[FIXED] Retrieve a single item by ID
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Retrieve a single item by ID 17 Feb 2016 04:10 #13820

  • vlemos
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Hello Admin

In a legacy Cook component, the code below worked well to retrieve a single item by ID. Now it gives an error. Any ideas why?

Thanks in advance
vlemos

	// load linked model (addresses)
	$model = CkJModel::getInstance('demoitem', 'DemoModel');

	// Define the SQL context
	$model->setState('context', 'demoitem.demoitem');

	// Call the state explicitly
	$model->setState('demoitem.demoitem', true);

	// Complete the object by inserting the addresses into the item
	$item = $model->getItem($id);

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Retrieve a single item by ID 17 Feb 2016 12:26 #13821

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What is the error ?
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Retrieve a single item by ID 17 Feb 2016 13:28 #13822

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Sorry:

Fatal error: Call to a member function getKeyName() on boolean in . . . \demo\libraries\legacy\model\admin.php on line 950

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Retrieve a single item by ID 18 Feb 2016 09:29 #13823

Why do you do this?

$model->setState('demoitem.demoitem', true);
You do not even need to set any state

If you have the singular model, the only two line you need are:
$model = CkJModel::getInstance('demoitem', 'DemoModel');
$item = $model->getItem($id);

Assuming you $id has a value

You can use a state if you want:
$model = CkJModel::getInstance('demoitem', 'DemoModel');
$model->setState('demoitem.id', $id);
$item = $model->getItem();
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Last edit: by Romkabouter.

Retrieve a single item by ID 18 Feb 2016 10:46 #13824

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Yes, Romkabouter, you are right.
K++

In cook, the way is to set the ID we are searching in the state var. "[itemname].id"
But getItem($id), would be nice also and I try to make it working if possible properly.

I'll check that later. For the moment, just use the state var.

You can make your own fork by yourself if you want to use the model that way.
Fork the model item superclass :
classes/model/item.php
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Retrieve a single item by ID 18 Feb 2016 11:40 #13825

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Hello Romkabouter / Admin

If you have the singular model, the only two line you need are:

   $model = CkJModel::getInstance('demoitem', 'DemoModel');
   $item = $model->getItem($id);

Assuming you $id has a value

You can use a state if you want:
   $model = CkJModel::getInstance('demoitem', 'DemoModel');
   $model->setState('demoitem.id', $id);
   $item = $model->getItem();


I tried both of these methods before posting; they do not work anymore in my modules.

Thanks again
vlemos

Fatal error: Call to a member function getKeyName() on boolean in  ....\demo\libraries\legacy\model\admin.php on line 950

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Retrieve a single item by ID 18 Feb 2016 11:51 #13826

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Only in module ?
So it means that a file is missing in the loader.

The last change achieved on the loader is this ticket :
www.j-cook.pro/index.php/forum/18-closed...ing-in-joomla-module
You remember for sure because YOU fixed it. lol.

Guess you don't have problem when the module appears on the page of the component where all dependencies are loaded.

getKeyName()
Is called on a Table object. Search that way.


Try to force loading (include_once) of the concerned missing class in the component loader.
Or at least some explicit XxxLoader::register() furnishing the class name and the full file path.

Hope it helps.

In case... same component than previous ticket ?
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[FIXED] Retrieve a single item by ID
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For starters it's just so easy to design an app in a way that I'm used to i.e. database first then views followed by customization. The fork system is pure brilliance from a developer standpoint as I can override things and still add and update my projects with minimal effort! Truly amazing to be able to build components in Joomla using incremental refinement without having to do everything by hand. Thanks for the great tool! I am so much more productive now than ever and I can't imagine building components any other way!!!!
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