Extending class

[matjazp]

<?php 
// in mytemplate.php

echo "Roles:" . wireClassExists('Roles') . "<br>"; // expecting true
echo "foo:" . wireClassExists('foo') ."<br>"; // expecting false

class bar extends Roles { }
echo "bar: " . wireClassExists('bar') ."<br>"; //expecting true

Output:

Roles:1
foo:
bar: 

If I add namespace ProcessWire in mytemplate.php, then the result is as expected, class bar exists:

<?php namespace ProcessWire;
// in mytemplate.php

echo "Roles:" . wireClassExists('Roles') . "<br>"; // expecting true
echo "foo:" . wireClassExists('foo') ."<br>"; // expecting false

class bar extends Roles { }
echo "bar: " . wireClassExists('bar') ."<br>"; //expecting true

Output:

Roles:1
foo:
bar: 1

This is how it should be?

[horst]

Interesting question! I give a like for it.

 

OT: I always would use namespaced template files for new projects now. (Skipping all filecompiler interaction for template files)

[kixe]

The Function wireClassExists() is described as follows:

ProcessWire namespace aware version of PHP's class_exists() function

 

The function returns the expected value, without a defined namespace

<?php
class bar extends Roles { }

// namespace aware function
var_dump(wireClassExists('bar')); // return false
var_dump(wireClassExists('\bar')); // return true

// not namespace aware function
var_dump(class_exists('bar')); // return true

and with defined namespace

<?php namespace ProcessWire;
class bar extends Roles { }

// namespace aware function
var_dump(wireClassExists('bar')); // return true
var_dump(wireClassExists('\bar')); // return false

// not namespace aware function
var_dump(class_exists('bar')); // return false

 

[matjazp]

Thx, kixe. I wrongly expected that wireClassExists('bar') would always return true, with or without namespace. Because this is not the case, this is why DynamicRoles module (and possible others?) doesn't work on PW3 unless you add namespace.