instance method `readonly!`

Ruby on Rails edge

Since v4.0.13

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readonly!()

Prevents records from being written to the database:

“‘ customer = Customer.new customer.readonly! customer.save # raises ActiveRecord::ReadOnlyRecord

customer = Customer.first customer.readonly! customer.update(name: ‘New Name’) # raises ActiveRecord::ReadOnlyRecord “‘

Read-only records cannot be deleted from the database either:

“‘ customer = Customer.first customer.readonly! customer.destroy # raises ActiveRecord::ReadOnlyRecord “`

Please, note that the objects themselves are still mutable in memory:

“‘ customer = Customer.new customer.readonly! customer.name = ’New Name’ # OK “‘

but you won’t be able to persist the changes.

Source

# File activerecord/lib/active_record/core.rb, line 839
    def readonly!
      @readonly = true
    end

Defined in activerecord/lib/active_record/core.rb line 839 · View on GitHub · Improve this page · Find usages on GitHub

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