how does a {{content()}} function work in volt page phalcon framework

Question

I was following tutorial of the phalcon framework and came up with a volt engine and its view page. I was wondering how the content() function work in volt view pages? and I'm also confused with the connection between the pages content? The structure of the code is as follows: - views/index.volt - views/index/index.volt - views/layout/main.volt

The views/index.volt page inside the views is the first page to load at the beginning but how are they interconnected with the pages index/index.volt and layout/main.volt? I've followed the tutorial from the official site of phalcon. http://phalcon-php-framework-documentation.readthedocs.org/en/0.7.0/reference/tutorial-invo.html

Answer 1

Phalcon has a hierarchical view structure with three levels: Layout, Controller and View.

When it is time to render a page Phalcon starts with the Layout. When Volt comes to a {{content()}} it renders the next view level down and adds that to the rendered view.

{{content()}} is an alias in Volt of Phalcon\Mvc\View::getContent().

Answer 2

Take a look at the specific View documentation.

The {{ content() }} is where the output of the next file down in the hierarchy will be placed. I.e. if you had a page file myPage.volt and a layout file myLayout.volt then the contents of myPage.volt would appear where the {{ content() }} line is inside myLayout.volt.