4.0版本，联合主键save时报错Cannot access offset of type array on array

[cs99619]

经跟踪src/Model.php文件941行错误
将原来代码

        if ($this->key) {
            $where = [$pk => $this->key];
        } elseif (is_string($pk) && isset($this->origin[$pk])) {
            $where     = [$pk => $this->origin[$pk]];
            $this->key = $this->origin[$pk];
        } elseif (is_array($pk)) {
            foreach ($pk as $field) {
                if (isset($this->origin[$field])) {
                    $where[] = [$field, '=', $this->origin[$field]];
                }
            }
        }

修改为：

        if ($this->key) {
            if (is_array($this->key)) {
                foreach ($this->key as $field) {
                    if (isset($this->origin[$field])) {
                        $where[] = [$field, '=', $this->origin[$field]];
                    }
                }
            } else {
                $where = [$pk => $this->key];
            }
        } elseif (is_string($pk) && isset($this->origin[$pk])) {
            $where     = [$pk => $this->origin[$pk]];
            $this->key = $this->origin[$pk];
        } elseif (is_array($pk)) {
            foreach ($pk as $field) {
                if (isset($this->origin[$field])) {
                    $where[] = [$field, '=', $this->origin[$field]];
                }
            }
        }

[rena-ertam028]

AI tried to solve the issue:

When model has composite primary keys, the key property can be an array. Current code only handles scalar keys. This fix adds proper handling for array keys by iterating through the key array and building where conditions for each key field.

The key array should be handled similarly to how array primary keys are handled - by building an array of conditions for each field.

You can review changes in this commit: rena-ertam028@cfa1787.

Caution

Disclaimer: The concept of solution was created by AI and you should never copy paste this code before you check the correctness of generated code. Solution might not be complete, you should use this code as an inspiration only.

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