1 | <?php |
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2 | |||
3 | declare(strict_types=1); |
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4 | |||
5 | /** |
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6 | * Ajax Dispatcher Middleware |
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7 | * |
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8 | * @since 0.1.0 |
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9 | * @author Glynn Quelch <[email protected]> |
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10 | * @license http://www.opensource.org/licenses/mit-license.html MIT License |
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11 | * @package PinkCrab\Ajax |
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12 | */ |
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13 | |||
14 | namespace PinkCrab\Ajax\Module; |
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15 | |||
16 | use PinkCrab\Ajax\Ajax; |
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17 | use PinkCrab\Ajax\Dispatcher\Ajax_Dispatcher; |
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18 | use PinkCrab\Perique\Interfaces\Registration_Middleware; |
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19 | |||
20 | |||
21 | class Ajax_Middleware implements Registration_Middleware { |
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22 | |||
23 | public Ajax_Dispatcher $dispatcher; |
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24 | |||
25 | public function __construct( Ajax_Dispatcher $dispatcher ) { |
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26 | $this->dispatcher = $dispatcher; |
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27 | } |
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28 | |||
29 | /** |
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30 | * Add all valid ajax calls to the dispatcher. |
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31 | * |
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32 | * @param object $class_instance |
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33 | * @return object |
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34 | */ |
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35 | public function process( object $class_instance ): object { |
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36 | if ( is_a( $class_instance, Ajax::class ) |
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37 | && is_admin() |
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38 | && wp_doing_ajax() |
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39 | ) { |
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40 | $this->dispatcher->add_ajax_call( $class_instance ); |
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41 | } |
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42 | return $class_instance; |
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43 | } |
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44 | |||
45 | public function setup(): void { |
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46 | /*noOp*/ |
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47 | } |
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48 | |||
49 | /** |
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50 | * Register all ajax calls. |
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51 | * |
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52 | * @return void |
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53 | */ |
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54 | public function tear_down(): void { |
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55 | $this->dispatcher->execute(); |
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56 | } |
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57 | } |
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58 |
Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: