I create a simple block (just a core/template) with a custom phtml file to make an extension without modifying other phtml file.
But I cannont make it shows except by modifying an original template to add $this->getChildHtml('myblock') thing.
I want to add my block without changing any other phtml. How to do this, how to make the block display automatically without getChildHtml method ?
I figure out how to do this,
I create my own module, with my own layout and templates.
In the layout I updated the section where the parent block is called, to insert my new block first, then in my template I call the parent through getChildHtml() so I don’t have to touch any of my client’s file.
Best regards, to everyone