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Add array id support to Model.update_counters. [#1254 state:resolved] [Carlos Júnior]
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2 changed files with 24 additions and 2 deletions
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@ -927,7 +927,7 @@ module ActiveRecord #:nodoc:
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#
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# ==== Parameters
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#
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# * +id+ - The id of the object you wish to update a counter on.
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# * +id+ - The id of the object you wish to update a counter on or an Array of ids.
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# * +counters+ - An Array of Hashes containing the names of the fields
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# to update as keys and the amount to update the field by as values.
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#
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@ -941,12 +941,27 @@ module ActiveRecord #:nodoc:
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# # SET comment_count = comment_count - 1,
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# # action_count = action_count + 1
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# # WHERE id = 5
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#
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# # For the Posts with id of 10 and 15, increment the comment_count by 1
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# Post.update_counters [10, 15], :comment_count => 1
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# # Executes the following SQL:
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# # UPDATE posts
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# # SET comment_count = comment_count + 1,
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# # WHERE id IN (10, 15)
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def update_counters(id, counters)
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updates = counters.inject([]) { |list, (counter_name, increment)|
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sign = increment < 0 ? "-" : "+"
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list << "#{connection.quote_column_name(counter_name)} = COALESCE(#{connection.quote_column_name(counter_name)}, 0) #{sign} #{increment.abs}"
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}.join(", ")
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update_all(updates, "#{connection.quote_column_name(primary_key)} = #{quote_value(id)}")
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if id.is_a?(Array)
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ids_list = id.map {|i| quote_value(i)}.join(', ')
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condition = "IN (#{ids_list})"
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else
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condition = "= #{quote_value(id)}"
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end
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update_all(updates, "#{connection.quote_column_name(primary_key)} #{condition}")
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end
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# Increment a number field by one, usually representing a count.
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@ -639,6 +639,13 @@ class BasicsTest < ActiveRecord::TestCase
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category.reload
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assert_not_nil category.categorizations_count
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assert_equal 4, category.categorizations_count
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category_2 = categories(:technology)
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count_1, count_2 = (category.categorizations_count || 0), (category_2.categorizations_count || 0)
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Category.update_counters([category.id, category_2.id], "categorizations_count" => 2)
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category.reload; category_2.reload
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assert_equal count_1 + 2, category.categorizations_count
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assert_equal count_2 + 2, category_2.categorizations_count
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end
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def test_update_all
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