This sample theme is used to illustrate the bare minimum functionality a Stencil theme needs to operate. The directory setup in this theme has been made to keep the structure clean and clear.
Keep in mind that the code has been written to be compatible with PHP 5.2 - removing small functions in favor of anonymous functions can make it even more compact.
Since WordPress does not allow Stencil to be in the plugin directory, the best place to put the framework is inside a theme. All sample themes now contain the core plugin and the implementation(s) they might require.
All you need is to install a sample theme to have full functionality.
Use get_stencil(); to get the Stencil object. With this object you can set variables and control advanced features.
Use include_stencil_controller( $filename ); to load controllers in your router/router.php.
This function is child-theme safe and will find the proper controller in your controllers folder or the parent theme's controllers folder.
You can compare this with the WordPress get_template_part() method.
Whenever you need lean Stencil object (without handling the flow of the current page) you can request a handler using get_stencil_handler();.
This is especially useful on AJAX requests where you only want to render a part of a view to dynamically update parts of your page.
<?php
$handler = get_stencil_handler();
$handler->set( 'my_variable', $some_value );
$html = $handler->fetch( 'snippets/some_div_snippet' );
echo $html;
?>
Because of the template engine, we transformed WordPress to a more MCV (Model, View, Controller) approach. WordPress serves as the Model provider, holding all the data. The template engine provides the views. The only thing that remains is the 'Controller' part.
Controllers are pieces of code that fetch the required Models (posts) and combines other logic to set all the variables a view needs.
The controllers are generally placed inside the controllers folder.
You can override the name of this folder by using the stencil:path-controllers filter.
If you prefer you can also do all of this in your functions.php or any other file you load via your functions.php.
To keep a clear idea of what controllers are loaded for what pages, the routers/router.php has been created.
This file is meant to connect actions to the loading of controllers.
To see all hooks Stencil offers, please read the extended documentation on the Stencil repository.
By default only index.php is Stencil enabled.
If you have a theme you want to convert to Stencil but don't want to do it all at once, you can keep all 'legacy' files like they are.
For files that you have converted, simply remove the file so WordPress does not load it.
Though if you want to keep the files but don't want WordPress to load them, you can set the following filter to true:
add_filter( 'stencil:template_index_only', '__return_true' );
This way all template requests are handled by your index.php, effectively making all request run through your template engine.
To keep everything nicely organised we suggest that you consider using the assets directory for static files like css, js or images.
When you use get_template_directory_uri(); or get_stylesheet_directory_uri(); this path is automatically added to it.
If you prefer to use another directory name use the stencil:assets_path filter.
If you want to disable this functionality completely, use the following code:
add_filter( 'stencil:assets_path', '__return_false' );
WordPress uses a hierarchy to determine what php file is loaded for a request. In Stencil we tried to keep this structure in mind but extend it a little aswel.
(insert tree hierarchy here)
You can always look up the logic behind the view options in the files located inside the plugins/stencil/classes/stencil/hierarchy/ files.
If this is not sufficient for you, you can easily override or extend the views that will be displayed for a certain request.
For example, to use the single/my_fancy_single_view view for all single pages, use the following code:
<?php
$stencil = get_stencil();
$stencil->set_hierarchy( 'single', array( 'single/my_fancy_single_view' ) );
?>
Stencil can automatically redirect all singular pages to their permalink version if another URL is requested. You can do this by using the following code:
<?php
add_filter( 'stencil:force_permalink', '__return_true' );
?>