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ActiveSupport::Deprecation::Behavior

Behavior module allows to determine how to display deprecation messages. You can create a custom behavior or set any from the DEFAULT_BEHAVIORS constant. Available behaviors are:

:raise

Raise ActiveSupport::DeprecationException.

:stderr

Log all deprecation warnings to $stderr.

:log

Log all deprecation warnings to Rails.logger.

:notify

Use ActiveSupport::Notifications to notify deprecation.rails.

:report

Use ActiveSupport::ErrorReporter to report deprecations.

:silence

Do nothing. On Rails, set config.active_support.report_deprecations = false to disable all behaviors.

Setting behaviors only affects deprecations that happen after boot time. For more information you can read the documentation of the behavior= method.

Methods

B

• behavior,
• behavior=

D

• disallowed_behavior,
• disallowed_behavior=

Whether to print a backtrace along with the warning.

Returns the current behavior or if one isn’t set, defaults to :stderr.

Source: show | on GitHub

def behavior
  @behavior ||= [DEFAULT_BEHAVIORS[:stderr]]
end

Sets the behavior to the specified value. Can be a single value, array, or an object that responds to call.

Available behaviors:

:raise

Raise ActiveSupport::DeprecationException.

:stderr

Log all deprecation warnings to $stderr.

:log

Log all deprecation warnings to Rails.logger.

:notify

Use ActiveSupport::Notifications to notify deprecation.rails.

:report

Use ActiveSupport::ErrorReporter to report deprecations.

:silence

Do nothing.

Setting behaviors only affects deprecations that happen after boot time. Deprecation warnings raised by gems are not affected by this setting because they happen before Rails boots up.

deprecator = ActiveSupport::Deprecation.new
deprecator.behavior = :stderr
deprecator.behavior = [:stderr, :log]
deprecator.behavior = MyCustomHandler
deprecator.behavior = ->(message, callstack, deprecation_horizon, gem_name) {
  # custom stuff
}

If you are using Rails, you can set config.active_support.report_deprecations = false to disable all deprecation behaviors. This is similar to the :silence option but more performant.

Source: show | on GitHub

def behavior=(behavior)
  @behavior = Array(behavior).map { |b| DEFAULT_BEHAVIORS[b] || arity_coerce(b) }
end

Returns the current behavior for disallowed deprecations or if one isn’t set, defaults to :raise.

Source: show | on GitHub

def disallowed_behavior
  @disallowed_behavior ||= [DEFAULT_BEHAVIORS[:raise]]
end

Sets the behavior for disallowed deprecations (those configured by ActiveSupport::Deprecation#disallowed_warnings=) to the specified value. As with behavior=, this can be a single value, array, or an object that responds to call.

Source: show | on GitHub

def disallowed_behavior=(behavior)
  @disallowed_behavior = Array(behavior).map { |b| DEFAULT_BEHAVIORS[b] || arity_coerce(b) }
end

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