Add Skip Validations When Creating A Record as a Rails til

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_994 TILs and counting..._
+_996 TILs and counting..._
 
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@@ -656,6 +656,7 @@ _994 TILs and counting..._
 - [Show Pending Migrations](rails/show-pending-migrations.md)
 - [Show Rails Models With Pry](rails/show-rails-models-with-pry.md)
 - [Show Rails Routes With Pry](rails/show-rails-routes-with-pry.md)
+- [Skip Validations When Creating A Record](rails/skip-validations-when-creating-a-record.md)
 - [Temporarily Disable strong_params](rails/temporarily-disable-strong-params.md)
 - [Test If An Instance Variable Was Assigned](rails/test-if-an-instance-variable-was-assigned.md)
 - [Truncate Almost All Tables](rails/truncate-almost-all-tables.md)

rails/skip-validations-when-creating-a-record.md

@@ -0,0 +1,35 @@
+# Skip Validations When Creating A Record
+
+Validations on your
+[ActiveRecord](https://api.rubyonrails.org/classes/ActiveRecord/Base.html)
+models are there for a reason. They provide application-level feedback about
+data that doesn't meet business requirements.  In many cases those validations
+should also be pushed down to the database-layer in the form of constraints.
+
+Sometimes, though rarely and probably only in a testing or development context,
+you'll want to skip validations.
+
+This is how you can do that when creating a new record:
+
+```ruby
+user = User.new(
+  name: 'Josh',
+  email: '',
+  password: SecureRandom.uuid
+)
+
+user.valid?
+#=> false
+user.errors.messages
+#=> {:email=>["can't be blank"]}
+
+user.save(validate: false)
+```
+
+After newing-up an object with invalid data, you can [save it with the
+`validate` option set to
+`false`](https://api.rubyonrails.org/classes/ActiveRecord/Persistence.html#method-i-save).
+This will skip ActiveRecord validations.
+
+Note: If you also have a database-layer constraint, this won't work. Perhaps
+for your use case you can get by with a new non-persisted record.