class ActiveSupport::Callbacks::Filters::Before
Public Class Methods
build(next_callback, user_callback, user_conditions, chain_config, filter)
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# File lib/active_support/callbacks.rb, line 124 def self.build(next_callback, user_callback, user_conditions, chain_config, filter) halted_lambda = chain_config[:terminator] if chain_config.key?(:terminator) && user_conditions.any? halting_and_conditional(next_callback, user_callback, user_conditions, halted_lambda, filter) elsif chain_config.key? :terminator halting(next_callback, user_callback, halted_lambda, filter) elsif user_conditions.any? conditional(next_callback, user_callback, user_conditions) else simple next_callback, user_callback end end
Private Class Methods
conditional(next_callback, user_callback, user_conditions)
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# File lib/active_support/callbacks.rb, line 174 def self.conditional(next_callback, user_callback, user_conditions) lambda { |env| target = env.target value = env.value if user_conditions.all? { |c| c.call(target, value) } user_callback.call target, value end next_callback.call env } end
halting(next_callback, user_callback, halted_lambda, filter)
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# File lib/active_support/callbacks.rb, line 156 def self.halting(next_callback, user_callback, halted_lambda, filter) lambda { |env| target = env.target value = env.value halted = env.halted unless halted result = user_callback.call target, value env.halted = halted_lambda.call(target, result) if env.halted target.send :halted_callback_hook, filter end end next_callback.call env } end
halting_and_conditional(next_callback, user_callback, user_conditions, halted_lambda, filter)
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# File lib/active_support/callbacks.rb, line 138 def self.halting_and_conditional(next_callback, user_callback, user_conditions, halted_lambda, filter) lambda { |env| target = env.target value = env.value halted = env.halted if !halted && user_conditions.all? { |c| c.call(target, value) } result = user_callback.call target, value env.halted = halted_lambda.call(target, result) if env.halted target.send :halted_callback_hook, filter end end next_callback.call env } end
simple(next_callback, user_callback)
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# File lib/active_support/callbacks.rb, line 187 def self.simple(next_callback, user_callback) lambda { |env| user_callback.call env.target, env.value next_callback.call env } end