method

update_counters

v7.1.3.2 - Show latest stable - 0 notes - Class: ActiveRecord::Relation

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What's this?

update_counters(counters) public

Updates the counters of the records in the current relation.

Parameters

counter - A Hash containing the names of the fields to update as keys and the amount to update as values.
:touch option - Touch the timestamp columns when updating.
If attributes names are passed, they are updated along with update_at/on attributes.

Examples

# For Posts by a given author increment the comment_count by 1.
Post.where(author_id: author.id).update_counters(comment_count: 1)

Show source

# File activerecord/lib/active_record/relation.rb, line 561
    def update_counters(counters)
      touch = counters.delete(:touch)

      updates = {}
      counters.each do |counter_name, value|
        attr = table[counter_name]
        updates[attr.name] = _increment_attribute(attr, value)
      end

      if touch
        names = touch if touch != true
        names = Array.wrap(names)
        options = names.extract_options!
        touch_updates = klass.touch_attributes_with_time(*names, **options)
        updates.merge!(touch_updates) unless touch_updates.empty?
      end

      update_all updates
    end

update_counters

Related methods

Parameters

Examples