📅  最后修改于: 2023-12-03 15:04:47.157000             🧑  作者: Mango
When working on a Ruby on Rails project, there may be situations where you want to update a model without triggering callbacks. This can be useful when performing routine maintenance or migrating data between different systems. In this article, we will explore how to update a record in Rails without invoking callbacks.
The best approach to updating a record without triggering callbacks in Rails is to use the update_columns
method. This method allows you to update a record's attributes without performing any validations, callbacks, or updating the updated_at
timestamp.
Here is an example of how to use update_columns
to update a record without callbacks:
user = User.find_by(id: 1)
user.update_columns(name: 'John Doe', age: 32)
In this example, we are updating the attributes name
and age
of a user with an id
of 1. Notice that we did not use the update
method which would trigger callbacks and validations.
While using update_columns
is a convenient way to update a record without callbacks, there are some important things to keep in mind:
Using update_columns
skips all callbacks, validations, and updating timestamps. This means that you need to be careful when using it and make sure that your data remains consistent.
If you need to perform certain actions when updating a record, you may need to use a different method that triggers callbacks. update_attributes
and update
are two such methods that trigger callbacks and validations.
In summary, there are situations where you may want to update a record without triggering callbacks in a Rails project. The best approach to doing this is to use the update_columns
method which allows you to update attributes without triggering callbacks, validations, or updating timestamps. However, you need to be careful when using this method to ensure that your data remains consistent.