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12. 【Laravelエラー】Illegal offset type

エラー内容

ErrorException (E_WARNING)
Illegal offset type

 

発生条件/原因/対処法

モデルからキー指定で値を取得する際に発生するエラー。

基本的にはキーに文字列か整数以外のものを指定した場合に発生するエラーであるが、

Laravelの場合は複合主キーを用いたモデルに対してキー指定すると発生する場合がある。

Laravelは複合主キーを得意としていないので、出来ればモデルから複合主キーの定義を削除すること。

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