Is there an official Magento 1.x Module Development Reference/Documentation?

[damiansilas_dam]

Hi people,

I had been selected recently to manage and improve an ecommerce with Magento 1.9 and they asked me to build several custom attribute modules so I figured how to build the basics about, but in the install of the module, I need to know the constants that I can use in "used_in_forms" because several attributes need to be in different forms on the store, but I can't find any valid reference, just several StackOverflow/Exchange topics with fragments of code where I can find several of those constants but I need all of them...

Any help with that? or since Magento belongs to Adobe, I'll need to pay the highly expensive certifications? I'll appreciate.

Thanks in advance!

[Sanjay Jethva]

Hello @damiansilas_dam 

You may refer the below links for the reference:

https://magento.stackexchange.com/questions/14163/adding-custom-attribute-to-customer

https://blog.magestore.com/magento-custom-attributes/

Thanks.