Cannot instantiate abstract class common\models\AbstractActiveRecord

[achretien]

What steps will reproduce the problem?

Use an abstract class as $baseClass

What's expected?

Generate the files properly.

What do you get instead?

The error "Cannot instantiate abstract class common\models\AbstractActiveRecord" in generators/model/Generator.php at line 686.

yii2-gii/generators/model/Generator.php

Line 686 in f15b8dc

$baseModel = new $baseClass();

Additional info

Q	A
Yii version	2.0.13.1
PHP version	7.1
Operating system	alpine-linux

[NickvdMeij]

Same problem here after updating to dev-master from v2.0.5

Yii version: 2.0.15.1
PHP version: 7.0.26
Operation System: Debian

---

After diving in deeper, I found that the $baseModel cannot be an abstract class due to how the code works:

protected function generateRelationName($relations, $table, $key, $multiple)
    {
/*
 * It created a "dummy" class using the specified base class
 */
//        static $baseModel;
//        /* @var $baseModel \yii\db\ActiveRecord */
//        if ($baseModel === null) {
//            $baseClass = $this->baseClass;
//            var_dump($relations, $table, $key, $multiple, $baseClass);
//            $baseModel = new $baseClass();
//            $baseModel->setAttributes([]);
//        }
        if (!empty($key) && strcasecmp($key, 'id')) {
            if (substr_compare($key, 'id', -2, 2, true) === 0) {
                $key = rtrim(substr($key, 0, -2), '_');
            } elseif (substr_compare($key, 'id', 0, 2, true) === 0) {
                $key = ltrim(substr($key, 2, strlen($key)), '_');
            }
        }
        if ($multiple) {
            $key = Inflector::pluralize($key);
        }
        $name = $rawName = Inflector::id2camel($key, '_');
        $i = 0;
/*
 * And uses it here to generate a name if the base model has the property $name (camelcased).
 */
//        while ($baseModel->hasProperty(lcfirst($name))) {
//            $name = $rawName . ($i++);
//        }
        while (isset($table->columns[lcfirst($name)])) {
            $name = $rawName . ($i++);
        }
        while (isset($relations[$table->fullName][$name])) {
            $name = $rawName . ($i++);
        }

        return $name;
    }

Like you can see, if you use an abstract class as base class and comment out the sections shown above, it will generate all models like usual. Its a temperary workaround ofcourse, but it should do the trick for everyone currently encountering this problem ;-).