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Sep 3, 2022
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docs: add composer.json in Mandatory File Changes in upgrade_420.rst #6476

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20 changes: 20 additions & 0 deletions user_guide_src/source/installation/upgrade_420.rst
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Expand Up @@ -38,6 +38,26 @@ Config/Constants.php

The constants ``EVENT_PRIORITY_LOW``, ``EVENT_PRIORITY_NORMAL`` and ``EVENT_PRIORITY_HIGH`` are deprecated, and the definitions are moved to ``app/Config/Constants.php``. If you use these constants, define them in ``app/Config/Constants.php``. Or use new class constants ``CodeIgniter\Events\Events::PRIORITY_LOW``, ``CodeIgniter\Events\Events::PRIORITY_NORMAL`` and ``CodeIgniter\Events\Events::PRIORITY_HIGH``.

composer.json
=============

If you use Composer, when you installed CodeIgniter v4.1.9 or before, and
if there are ``App\\`` and ``Config\\`` namespaces in your ``/composer.json``'s ``autoload.psr-4``
like the following, you need to remove these lines, and run ``composer dump-autoload``.

.. code-block:: text

{
...
"autoload": {
"psr-4": {
"App\\": "app", <-- Remove this line
"Config\\": "app/Config" <-- Remove this line
}
},
...
}

Breaking Changes
****************

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