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  • 2025/5/16 -Master Active Record Validations in Rails with this comprehensive guide covering rules, custom errors, and best practices for robust apps.

    2024/8/20 -I have a model with an attribute that's an array of stings (PostgreSQL) and I want to validate if the attribute is, let's say [ "one" ] or [ "one"…

    2024/8/27 -Validation in Ruby on Rails is a mechanism to enforce rules on the data within your application's models. It ensures that data conforms to certain rules before ...

    2024/8/4 -Rails provides powerful validation mechanisms through ActiveModel , allowing you to enforce rules on ActiveRecord attributes or custom validators. For seamless ...

    2025/1/10 -Your Rails application probably makes use of uniqueness validations in several key places. This validation provides for a nice user experience when ...

    2025/4/1 -You can define your own custom validation contexts for callbacks, which is useful when you want to perform validations based on specific scenarios.

    A.回答を一意にするUserなのかどうかを判別するフラグを新たに持たせて、それをwith_optionsメソッドで判定すればいいです。 以下を参考にしてください。 Railsで特定の条件下で走る...

    A.validates は ActiveModel::Validations モジュールで 定義されてる特異メソッドで ActiveRecord::Base などの フィールドをチェックします。 今...

    A.データベースより前に、フロントエンドの脆弱性対策が先だと思います。 まずは、無料のツールを使ってみてはいかがですか。 https://yun-craft.com/admin-blog/tomiz...

    2024/10/16 -Active Record ValidationsThis guide teaches you how to validate the state of objects before they go into the database using Active Record's validations feature.

    2025/3/18 -Rails provides model-level validations to ensure that only valid data is saved into your database. There are many built-in helpers, and you can create your own ...

    2025/1/10 -Rails 7.1 added a validation option for enum, so it's now straightforward to validate that the value of an enum attribute is an allowed value and, ...

    2024/7/17 -Rails offers built-in validation within Active Record models, which is simple and seamlessly integrates with the Rails framework. This ensures data conforms to ...