Composer classmap autoload does not load new files in folder

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The following problem: I have defined a classmap in my composer.json:

"autoload": {
    "classmap": [
        "app/controllers",
        "app/models",
        "app/helper.php"
    ]   
}

However, when I create a new file in the "controllers" or "models" folder, it will not load them and I always have to make a composer dump-autoload.

Is this the correct behavior? I thought the autoloader from composer monitors the folder for new files then?

Yes, this is correct behaviour. If you want new classes to be loaded automatically, you have to use either PSR-0 or PSR-4 autoloading.

Generating the classmap requires Composer to know the filename that contains a certain class. This can only be done by parsing the whole source code in the directory and scanning for classes, interfaces and trait definitions.

This usually is a CPU and I/O intensive task, so it is only done when Composer does install/update or (on demand) dumps the autoloader, it is not done with every require "vendor/autoload.php";.

Note that the classmap autoloading is simply there for old legacy codebases that didn't implement at least PSR-0. It is not intended for new code - unless you want to pay the price to dump the autoloader again and again during development.

PHP Composer … The Autoloader - tajawal, Composer is the most awesome tool for any PHP developer that made go and load it, so my application doesn't have to load all classes each request, this is called “Autoloading”. $a = new A();// check the list of all loaded files reads that we are using autoload classmap , it is scanning all the files in the  Hi there. After updating composer to 1.10-dev we receive a lot of deprecation notices that our classes does not comply the psr-4 autoloading standard.. And this is just a question on how to solve a huge load of these notices and still keep the optimized classmap alive.

Go to the root of your server by SSH. Now do the following:

  1. Run ls to list all the files.
  2. You will see composer.lock file; remove the file with rm composer.lock command.
  3. Now run php composer update command.

Depending on your linux type you may have to run php-cli composer update.

Step 3 will create a new composer.lock file and all your classes will be loaded again. Do this anytime you add new classes.

or:

  1. Run composer dump-autoload command.

The magic behind autoloading php files using Composer, Do you still remember how we used load PHP Classes using require_once? <​?php // /ComposerAutoloading/src/index.php $santa = new \Christmas\Santa(); $​santa->sayIt(); I don't have any autoload.php file nor vendor folder. if found, false otherwise */ public function findFile($class) { // class map  Browse other questions tagged php composer-php autoload psr-4 or ask your own question. The Overflow Blog Podcast 246: Chatting with Robin Ginn, Executive Director of the OpenJS…

As already pointed out this is correct behavior. If you want new classes to be loaded automatically, you have to use either PSR-0 or PSR-4 autoloading.

The classmap autoload type specified is composer.json is mainly used by legacy projects that do not follow PSR-0 or PSR-4. I have recently started working on such a project and wanted to try to automatically run the composer dump-autoload command when a new class is created. This is actually tricky without including all of the composer source inside the project. I came up with this just to remind the developer they need to dump the classmap:

$loader = include_once 'vendor/autoload.php';
if ( ! $loader ) {
    throw new Exception( 'vendor/autoload.php missing please run `composer install`' );
}

spl_autoload_register(
    function ( $class ) {
        if ( 'A_Common_Class_Prefix' === substr( $class, 0, 10 ) ) {
            throw new Error( 'Class "' . $class . '"" not found please run `composer dump-autoload`' );
        }
    },
    true
);

This registers another autoloader which is run after composer's autoloader so any classes composer did not find would be passed to it. If the class matches a prefix an exception is throw reminding the developer to re-dump the autoloader and update the classmap.

php - How to fix "Class '' not found" error, I use composer autoload to load my classes. Solution (hopefully ). So there are a few things you can do to fix the "Class '' not found" in PHP. Check both the namespace at the top of your file, and the folder directory match up. but there is always the same issue maybe because am new using composer  After some tests, I have came to the conclusions that adding a namespace to a file that contains functions, and setting up composer to autoload this file seems to not load this function across all the files that require the autoload path. To synthesize, this will autoload your function everywhere: composer.json

For me, it somehow did not work too with Yii 1 class-map, when I added - required it along with many other libraries present - I don't remember exactly perhaps I manually edited the file or file permissions were to blame, it was not regenerated for some reason, even when I removed the composer.lock and erased completely the vendor folder - perhaps some cache, as far as I remember, but effectively what helped was to install firstly isolatedly only this single library, it generated class-map, then I added all the other remaining libraries separately at once at second step, viola, everything loadable.

Composer Autoloading Tutorial – Vegibit, Composer classmap autoload does not load new files However, when I create a new file in the "controllers" or "models" folder, it will not load  The composer documentation states that:. After adding the autoload field, you have to re-run install to re-generate the vendor/autoload.php file. Assuming your "src" dir resides at the same level as "vendor" dir:

Autoloading Files, First up we'll do a simple example of File Based Autoloading using Composer. In our web root, create a folder named aldemo , for auto load demo. You'll see the new classmap object within the autoload object, and it now has an array Not only that, each namespace has the exact same class name and method name! In the present tutorial, we will demonstrate how to autoload our own classes as well as other non-composer classes with the same Composer built-in autoloader. Autoloading allows us to use PHP classes without the need to require() or include() them and is considered a hallmark of modern-day programming.

PHP Class Autoloading – Using Zend Framework 3, The autoloader works great by itself, but can also work with other autoloaders not My\App . The value is the location to the directory the classes can be found in. /app/Config/Constants.php file and setting the new namespace value under The classmap is used extensively by CodeIgniter to eke the last  Using classmap, we are telling composer that this is the way to do mapping, and it is a very basic way to map namespaces to paths and if you want more details, just check vendor/composer/autoload

Difference between PSR-4 and classmap autoloading?, To determine the file path by class name, the class map autoloader just the class map and update it each time you add a new class to your program. The class name is suffixed with .php extension when loading the file from the file "/​path/to/zendframework/zend-mvc/src" directory, you can organise your files as follows: You will see composer.lock file; remove the file with rm composer.lock command. Now run php composer update command. Depending on your linux type you may have to run php-cli composer update. Step 3 will create a new composer.lock file and all your classes will be loaded again. Do this anytime you add new classes. or: Run composer dump-autoload

Comments
  • "Note that the classmap autoloading is simply there for old legacy codebases that didn't implement at least PSR-0". Not quite true. See the documentation for dump-autoload: "--optimize (-o): Convert PSR-0/4 autoloading to classmap to get a faster autoloader. This is recommended especially for production, but can take a bit of time to run so it is currently not done by default."
  • Optimizing the autoloader is not the same as defining the autoloading scheme. If a future version of PHP offers engine-level support for PSR-4, Composer likely will give up the classmap when optimizing for such a version, but has to keep the classmap if that classmap is the way autoloading is defined.