Create inser the document in the database, returns an error if document already exists and set CreatedAt timestamp.

Destroy really deletes.

Find is finding the model with objectid id in the collection name, with its default scope for paranoid documents, it won't look at documents tagged as deleted.

FindUnscoped is similar as Find but does not care of the default scope of the document.

NewValidationErrors return an empty ValidationErrors struct.

ValidationErrors store each errors associated to every fields of a model.

ValidationErrorsBuilder is used to provide a simple way to create a ValidationErrors struct.