method
decrement_counter
v3.0.7 -
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Class: ActiveRecord::CounterCache
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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
- counter_name - The name of the field that should be decremented.
- 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)


