Custom module factory not working (method is undefined)

Question

What is the minimum configuration needed to build a custom module factory?

I have this and it is still not working:

table: custommodule_products which looks like:

| file_id    | int(10) unsigned     | NO   | PRI | NULL    | auto_increment |
| store_id   | smallint(5) unsigned | NO   |     | NULL    |                |
| name       | varchar(255)         | NO   | MUL | NULL    |                |
| logs       | varchar(255)         | NO   |     | NULL   

//Example/Model/Example.php:

class Example extends AbstractModel
{

    protected function _construct()
    {
        $this->_init("Vendor\Example\Model\ResourceModel\Example");
    }

//Example/Model/ResourceModel/Example.php:

class Example extends AbstractDb
{
    protected function _construct()
    {
        $this->_init('custommodule_products', 'file_id');
    }

//Example/Model/ResourceModel/Example/Collection.php:

class Collection extends AbstractCollection
{
    protected function _construct()
    {
        $this->_init(
            'Vendor\Example\Model\Example',
            'Vendor\Example\Model\ResourceModel\Example'
        );
    }

And then when I create my factory and try to save some data on a new row I get Fatal error: Uncaught Error: Call to undefined method \Collection::setName():

use Vendor\Example\Model\ResourceModel\Example\CollectionFactory as FileFactory;
..constructor..

$newFileRow = $this->fileFactory->create();
$newFileRow->setName("test");

I don't understand what else does it need or how can I further debug it. I've checked var/generation/Module...CollectionFactory.php and the file is there. Does it need something else to be able to set data?

Thanks!

Answer 1

The main problem i think is that you are using incorrect factory. If you want to save a model, you need to get factory for the model, not the collection.

Eg instead of using:

use Vendor\Example\Model\ResourceModel\Example\CollectionFactory as FileFactory;

you probably want to use:

use Vendor\Example\Model\ExampleFactory as FileFactory;

In general i think it is wise to learn and use repository pattern. Depending on your magento version, you can notice that models save,delete,load methods are deprecated and may become problematic in future.