FieldtypeRuntimeMarkup and InputfieldRuntimeMarkup
 
Modules Directory: http://modules.processwire.com/modules/fieldtype-runtime-markup/
GitHub: https://github.com/kongondo/FieldtypeRuntimeMarkup
 
This module allows for custom markup to be dynamically (PHP) generated and output within a page's edit screen (in Admin).
 
The value for the fieldtype is generated at runtime. No data is saved in the database. The accompanying InputfieldRuntimeMarkup is only used to render/display the markup in the page edit screen.
 
The field's value is accessible from the ProcessWire API in the frontend like any other field, i.e. it has access to $page and $pages.
 
The module was commissioned/sponsored by @Valan. Although there's certainly other ways to achieve what this module does, it offers a dynamic and flexible alternative to generating your own markup in a page's edit screen whilst also allowing access to that markup in the frontend. Thanks Valan!
 
Warning/Consideration Although access to ProcessWire's Fields' admin pages is only available to Superusers, this Fieldtype will evaluate and run the custom PHP Code entered and saved in the field's settings (Details tab). Utmost care should therefore be taken in making sure your code does not perform any CRUD operations!! (unless of course that's intentional) The value for this fieldtype is generated at runtime and thus no data is stored in the database. This means that you cannot directly query a RuntimeMarkup field from $pages->find(). Usage and API  
Backend Enter your custom PHP snippet in the Details tab of your field (it is RECOMMENDED though that you use wireRenderFile() instead. See example below). Your code can be as simple or as complicated as you want as long as in the end you return a value that is not an array or an object or anything other than a string/integer.
 
FieldtypeRuntimeMarkup has access to $page (the current page being edited/viewed) and $pages. 
 
A very simple example. return 'Hello'; Simple example. return $page->title; Simple example with markup. return '<h2>' . $page->title . '</h2>'; Another simple example with markup. $out = '<h1>hello '; $out .= $page->title; $out .= '</h1>'; return $out; A more advanced example. $p = $pages->get('/about-us/')->child('sort=random'); return '<p>' . $p->title . '</p>'; An even more complex example. $str =''; if($page->name == 'about-us') { $p = $page->children->last(); $str = "<h2><a href='{$p->url}'>{$p->title}</a></h2>"; } else { $str = "<h2><a href='{$page->url}'>{$page->title}</a></h2>"; } return $str; Rather than type your code directly in the Details tab of the field, it is highly recommended that you placed all your code in an external file and call that file using the core wireRenderFile() method. Taking this approach means you will be able to edit your code in your favourite text editor. It also means you will be able to type more text without having to scroll. Editing the file is also easier than editing the field. To use this approach, simply do: return wireRenderFile('name-of-file');// file will be in /site/templates/ If using ProcessWire 3.x, you will need to use namespace as follows: return ProcessWire\wireRenderFile('name-of-file'); How to access the value of RuntimeMarkup in the frontend (our field is called 'runtime_markup')
 
Access the field on the current page (just like any other field) echo $page->runtime_markup; Access the field on another page echo $pages->get('/about-us/')->runtime_markup; Screenshots
 
Backend
 

 

 
Frontend