method

strict_loading!

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What's this?

strict_loading!(value = true, mode: :all) public

Sets the record to strict_loading mode. This will raise an error if the record tries to lazily load an association.

user = User.first
user.strict_loading! # => true
user.address.city
=> ActiveRecord::StrictLoadingViolationError
user.comments.to_a
=> ActiveRecord::StrictLoadingViolationError

Parameters

value - Boolean specifying whether to enable or disable strict loading.
:mode - Symbol specifying strict loading mode. Defaults to :all. Using :n_plus_one_only mode will only raise an error if an association that will lead to an n plus one query is lazily loaded.

Examples

user = User.first
user.strict_loading!(false) # => false
user.address.city # => "Tatooine"
user.comments.to_a # => [#<Comment:0x00...]

user.strict_loading!(mode: :n_plus_one_only)
user.address.city # => "Tatooine"
user.comments.to_a # => [#<Comment:0x00...]
user.comments.first.ratings.to_a
=> ActiveRecord::StrictLoadingViolationError

Show source

# File activerecord/lib/active_record/core.rb, line 688
    def strict_loading!(value = true, mode: :all)
      unless [:all, :n_plus_one_only].include?(mode)
        raise ArgumentError, "The :mode option must be one of [:all, :n_plus_one_only] but #{mode.inspect} was provided."
      end

      @strict_loading_mode = mode
      @strict_loading = value
    end

strict_loading!

Related methods

Parameters

Examples