RSpec
Ruby on Rails
Ruby
method
decrement_counter
v3.0.9 -
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Class: ActiveRecord::CounterCache
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- What's this?
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actually_destroyed? 
(>= v4.2.1)
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clear_destroy_state
(>= v4.2.1)
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_create_record
(>= v4.2.1)
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decrement_counter
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destroy_row
(>= v4.2.1)
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each_counter_cached_associa...
(>= v4.2.1)
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increment_counter
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reset_counters
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update_counters
= private
= protected
decrement_counter(counter_name, id)
public
Decrement a number field by one, usually representing a count.
This works the same as increment_counter but reduces the column value by 1 instead of increasing it.
Parameters
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counter_name - The name of the field that should be decremented.
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id - The id of the object that should be decremented.
Examples
# Decrement the post_count column for the record with an id of 5 DiscussionBoard.decrement_counter(:post_count, 5)
