Allow configuration of the cache used by the url manager

[hofrob]

What steps will reproduce the problem?

• use a yii application in production with url manager cache and extensive use of the cache in general (where you can't just flush everything)
• endpoints (actions/urls) get added/removed through the development process
• try to access the new urls
• 404 because url rules are cached

What is the expected result?

• one should be able to flush the url manager cache only
• it should be possible to config the url manager cache (duration, dependency)

Additional info

https://github.com/yiisoft/yii2/blob/master/framework/web/UrlManager.php#L278

Q	A
Yii version	2.0.15.1
PHP version	7.2.9
Operating system	docker/alpine

[paweljankowiak06]

Same could be said about rbac DbManager. There is no possibility to clear cache only for texts categories.

[hofrob]

Now that I think about it.

In yii\rbac\DbManager you could just use the same cache with a different config:

https://github.com/yiisoft/yii2/blob/master/framework/rbac/DbManager.php#L64

The cache property accepts an array as config for the cache.

And in yii\web\UrlManager you can use a dedicated cache application component. Still confusing that there are two different approaches to the same problem.

[rob006]

And in yii\web\UrlManager you can use a dedicated cache application component. Still confusing that there are two different approaches to the same problem.

This actually should be fixed - Instance::ensure() should be consistently used in such cases.

We could also make $cacheKey public, so cache could be revalidated by changing this value. But this will break BC, so probably not an option in 2.0.

[paweljankowiak06]

There are few places where such behavior is implemented. Maybe some common trait would be a good solution.

[mjvanmiddelaar]

I'm not sure if it is related to this issue: i would like to set a cache dependency for the UrlManager cache in https://github.com/yiisoft/yii2/blob/master/framework/web/UrlManager.php#L278, both duration and dependency are always the default null - or should i open a new issue?

In my scenario I have an url rule like this:

<?php

namespace app\rules;

class SlugUrlRule extends \yii\web\UrlRule
{

    public $modelClass;

    public $attribute = 'slug';

    public $paramName = 'slug';

    public function init()
    {
        $slugs = array_filter($this->modelClass::find()->select($this->attribute)->column());
        $this->pattern = '<'.$this->paramName.':(' . implode('|', $slugs) . ')>';
        parent::init();
    }
}

[samdark]

About original issue. You can specify separate cache instance there:

• https://github.com/yiisoft/yii2/blob/master/framework/rbac/DbManager.php#L83
• https://github.com/yiisoft/yii2/blob/master/framework/web/UrlManager.php#L132

So I don't see a problem with flushing this separate instance.

@mahkali what for?

[mjvanmiddelaar]

@samdark flushing the cache on change would indeed be more efficient as we don't require to check a dependency on every request.