RSpec
Ruby on Rails
Ruby
method
increment_counter
v5.2.3 -
Show latest stable
-
0 notes -
Class: ClassMethods
- 1.0.0
- 1.1.6
- 1.2.6
- 2.0.3
- 2.1.0
- 2.2.1
- 2.3.8
- 3.0.0
- 3.0.9
- 3.1.0
- 3.2.1
- 3.2.8
- 3.2.13
- 4.0.2 (0)
- 4.1.8 (1)
- 4.2.1 (0)
- 4.2.7 (0)
- 4.2.9 (0)
- 5.0.0.1 (0)
- 5.1.7 (38)
- 5.2.3 (0)
- 6.0.0 (0)
- 6.1.3.1 (0)
- 6.1.7.7 (0)
- 7.0.0 (0)
- 7.1.3.2 (24)
- 7.1.3.4 (0)
- What's this?
-
counter_cache_column?
(>= v7.1.3.2)
-
decrement_counter
-
increment_counter
-
reset_counters
-
update_counters
= private
= protected
increment_counter(counter_name, id, touch: nil)
public
Increment a numeric field by one, via a direct SQL update.
This method is used primarily for maintaining counter_cache columns that are used to store aggregate values. For example, a DiscussionBoard may cache posts_count and comments_count to avoid running an SQL query to calculate the number of posts and comments there are, each time it is displayed.
Parameters
-
counter_name - The name of the field that should be incremented.
-
id - The id of the object that should be incremented or an array of ids.
-
:touch - Touch timestamp columns when updating. Pass true to touch updated_at and/or updated_on. Pass a symbol to touch that column or an array of symbols to touch just those ones.
Examples
# Increment the posts_count column for the record with an id of 5 DiscussionBoard.increment_counter(:posts_count, 5) # Increment the posts_count column for the record with an id of 5 # and update the updated_at value. DiscussionBoard.increment_counter(:posts_count, 5, touch: true)
