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I am having some trouble with Magento Observers. What I am trying to do is: as I am saving a custom product in my adminhtml form I want to my the product sku with a 3rd party API sku. To do this I created an observer for the save action (savePreDispatch) , able to get the retrieve the SKU from the third party API but now my concern is : how can save to my collection the retrieved SKU in the observer?

I have tried something like $this = $observer -> getEvent() -> getProduct() and then save the SKU but it doesn't appear to work, any ideas?

my config.xml is below

<?xml version="1.0"?> <config> <modules> <Namespace_Module> <version>1.0.3</version> </Namespace_Module> </modules> <global> <resources> <namespace_module_setup> <setup> <module>Namespace_Module</module> <class>Namespace_Module_Model_Resource_Setup</class> </setup> </namespace_module_setup> </resources> <blocks> <namespace_module> <class>Namespace_Module_Block</class> </namespace_module> </blocks> <helpers> <namespace_module> <class>Namespace_Module_Helper</class> </namespace_module> </helpers> <models> <namespace_module> <class>Namespace_Module_Model</class> <resourceModel>namespace_module_resource</resourceModel> </namespace_module> <namespace_module_resource> <class>Namespace_Module_Model_Resource</class> <entities> <product> <table>namespace_module_product</table> </product> </entities> </namespace_module_resource> </models> </global> <adminhtml> <events> <catalog_product_save_before> <observers> <namespace_module> <type>singleton</type> <class>namespace_module/observer</class> <method>catalogProductSaveBefore</method> </namespace_module> </observers> </catalog_product_save_before> </events> </adminhtml> </config>
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Do notuse $this, an observer runs outside the product model. I do not suggest to use the predispatch action too, use the model save events.

Use catalog_product_save_before event in adminhtml scope.

... <adminhtml> ... <events> <catalog_product_save_before> <observers> <my_observer> <type>singleton</type> <class>my_module/observer</class> <method>catalogProductSaveBefore</method> </my_observer> </observers> </catalog_product_save_before> ... </events> ... </adminhtml> ...

And do something like this:

... $product = $observer->getEvent()->getProduct(); ... $product->setSku($newSku); ...
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  • Grazie @RiccardoT for the answer , however as far as I understand from magento the event catalog_product_save_before in the adminhtml fires up when I add a new product in the adminhtml right? However I want to fire up the same event but for my own module and for my products which are somehow separated entites, but I am having troubles in finding the right route for it, could you guide me ? Should it be something like <model_product_save_before> ? Thank you Commented Jul 8, 2016 at 7:33
  • Can you please add more details? Commented Jul 8, 2016 at 7:34
  • <catalog_product_save_before> <observers> <namespace_module> <type>singleton</type> <class>namespace_module/observer</class> <method>catalogProductSaveBefore</method> </namespace_module> </observers> </catalog_product_save_before> I have tried this code following your example but the event never fires up so I'm guessing it's some routes problem I'm missing out Commented Jul 8, 2016 at 10:04
  • Routes are not involved here, it should work at model level. Did you configure the "model" class path on your module? Commented Jul 8, 2016 at 10:16
  • yeah I am pretty sure the Model class is in place Commented Jul 8, 2016 at 10:41

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