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Mention Arel.sql in update_all docs [docs] #45662

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Jul 26, 2022
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Mention Arel.sql in update_all docs [docs] #45662

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6 changes: 5 additions & 1 deletion activerecord/lib/active_record/relation.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -448,7 +448,8 @@ def _exec_scope(...) # :nodoc:
#
# ==== Parameters
#
# * +updates+ - A string, array, or hash representing the SET part of an SQL statement.
# * +updates+ - A string, array, or hash representing the SET part of an SQL statement. Any strings provided will
# be type cast, unless you use `Arel.sql`. (Don't pass user-provided values to `Arel.sql`.)
#
# ==== Examples
#
Expand All @@ -463,6 +464,9 @@ def _exec_scope(...) # :nodoc:
#
# # Update all invoices and set the number column to its id value.
# Invoice.update_all('number = id')
#
# # Update all books with 'Rails' in their title
# Book.where('title LIKE ?', '%Rails%').update_all(title: Arel.sql("title + ' - volume 1'"))
def update_all(updates)
raise ArgumentError, "Empty list of attributes to change" if updates.blank?

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