{"provider_name":"Hatena Blog","type":"rich","width":"100%","image_url":null,"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fledsun.hatenablog.com%2Fentry%2F2025%2F11%2F22%2F224533\" title=\"strong parameter\u306eexpect\u3067\u7a7a\u6587\u5b57\u306f\u30a8\u30e9\u30fc - @ledsun blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Rails","\u6280"],"url":"https://ledsun.hatenablog.com/entry/2025/11/22/224533","title":"strong parameter\u306eexpect\u3067\u7a7a\u6587\u5b57\u306f\u30a8\u30e9\u30fc","blog_title":"@ledsun blog","author_name":"ledsun","description":"\u7a7a\u6587\u5b57\u3092\u8a31\u5bb9\u3059\u308b\u306e\u304b\u3057\u306a\u3044\u306e\u304b\u6df7\u4e71\u3057\u305f\u306e\u3067\u3001\u30e1\u30e2\u3063\u3066\u304a\u304d\u307e\u3059\u3002 my-app(dev):002> params = ActionController::Parameters.new(a: \"\") => #<ActionController::Parameters {\"a\" => \"\"} permitted: false> my-app:003(dev)> params.expect :a (my-app):3:in '<main>': param is missing or the value is empty or invalid: a (ActionController::Paramete\u2026","published":"2025-11-22 22:45:33","version":"1.0","author_url":"https://blog.hatena.ne.jp/ledsun/","blog_url":"https://ledsun.hatenablog.com/","height":"190"}