Building breadcrumbs automatically with modules

Question

My web page has multiple modules, and i want to know if there is a way to add breadcrumbs the modules home url, without have to add manually to all files. ex:

Home > MyModule > MyController

Answer 1

The question is definetely too broad, but here is solution I used:

<?php

namespace backend\modules\tests\components;

use yii\helpers\ArrayHelper;
use yii\web\Controller as BaseController;
use yii\web\View;

class Controller extends BaseController
{   
    /**
     * @inheritdoc
     */
    public function beforeAction($action)
    {
        if (parent::beforeAction($action)) {
            Yii::$app->view->on(View::EVENT_BEGIN_BODY, function () {
                $this->fillBreadcrumbs();
            });

            return true;
        } else {
            return false;
        }
    }

    /**
     * Fill common breadcrumbs
     */
    protected function fillBreadcrumbs()
    {
        $breadcrumbs = [];

        // Add needed elements to $breadcrumbs below

        $label = 'Tests';
        $breadcrumbs[] = $this->route == '/tests/default/index' ? $label : [
            'label' => $label,
            'url' => ['/tests/default/index'],
        ];

        // ...

        $this->mergeBreadCrumbs($breadcrumbs);
    }

    /**
     * Prepend common breadcrumbs to existing ones
     * @param array $breadcrumbs
     */
    protected function mergeBreadcrumbs($breadcrumbs)
    {
        $existingBreadcrumbs = ArrayHelper::getValue($this->view->params, 'breadcrumbs', []);
        $this->view->params['breadcrumbs'] = array_merge($breadcrumbs, $existingBreadcrumbs);
    }
}

As you can see, it's based on view events and custom controller (extending from yii\web\Controller).

All you need next is to extend needed controllers from custom one.