Module: ActiveSupport::Deprecation::Behavior

Included in:: ActiveSupport::Deprecation

Defined in:: activesupport/lib/active_support/deprecation/behaviors.rb

Overview

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.
silence: Do nothing.

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

Instance Attribute Summary collapse

#debug ⇒ Object

Whether to print a backtrace along with the warning.

Instance Method Summary collapse

#behavior ⇒ Object

Returns the current behavior or if one isn’t set, defaults to :stderr.
#behavior=(behavior) ⇒ Object

Sets the behavior to the specified value.

Instance Attribute Details

#debug ⇒ `Object`

Whether to print a backtrace along with the warning.



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# File 'activesupport/lib/active_support/deprecation/behaviors.rb', line 63

def debug
  @debug
end

Instance Method Details

#behavior ⇒ `Object`

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



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# File 'activesupport/lib/active_support/deprecation/behaviors.rb', line 66

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

#behavior=(behavior) ⇒ `Object`

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.
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.

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



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# File 'activesupport/lib/active_support/deprecation/behaviors.rb', line 91

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