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Merge pull request #43286 from soartec-lab/task/fix-document-for-activerecord-uniqueness-validate

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Fixed guide to `case_sensitive` option for Activerecord uniqueness validator [skip ci]
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Jonathan Hefner 2021-09-22 10:31:24 -05:00 committed by GitHub
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2 changed files with 2 additions and 4 deletions
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2
activerecord/lib/active_record/validations/uniqueness.rb
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@ -161,7 +161,7 @@ module ActiveRecord
# <tt>WHERE</tt> SQL fragment to limit the uniqueness constraint lookup # <tt>WHERE</tt> SQL fragment to limit the uniqueness constraint lookup
# (e.g. <tt>conditions: -> { where(status: 'active') }</tt>). # (e.g. <tt>conditions: -> { where(status: 'active') }</tt>).
# * <tt>:case_sensitive</tt> - Looks for an exact match. Ignored by # * <tt>:case_sensitive</tt> - Looks for an exact match. Ignored by
# non-text columns (+true+ by default). # non-text columns. The default behavior respects the default database collation.
# * <tt>:allow_nil</tt> - If set to +true+, skips this validation if the # * <tt>:allow_nil</tt> - If set to +true+, skips this validation if the
# attribute is +nil+ (default is +false+). # attribute is +nil+ (default is +false+).
# * <tt>:allow_blank</tt> - If set to +true+, skips this validation if the # * <tt>:allow_blank</tt> - If set to +true+, skips this validation if the

4
guides/source/active_record_validations.md
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@ -689,9 +689,7 @@ end
Should you wish to create a database constraint to prevent possible violations of a uniqueness validation using the `:scope` option, you must create a unique index on both columns in your database. See [the MySQL manual](https://dev.mysql.com/doc/refman/en/multiple-column-indexes.html) for more details about multiple column indexes or [the PostgreSQL manual](https://www.postgresql.org/docs/current/static/ddl-constraints.html) for examples of unique constraints that refer to a group of columns. Should you wish to create a database constraint to prevent possible violations of a uniqueness validation using the `:scope` option, you must create a unique index on both columns in your database. See [the MySQL manual](https://dev.mysql.com/doc/refman/en/multiple-column-indexes.html) for more details about multiple column indexes or [the PostgreSQL manual](https://www.postgresql.org/docs/current/static/ddl-constraints.html) for examples of unique constraints that refer to a group of columns.
There is also a `:case_sensitive` option that you can use to define whether the There is also a `:case_sensitive` option that you can use to define whether the uniqueness constraint will be case sensitive, case insensitive, or respects default database collation. This option defaults to respects default database collation.
uniqueness constraint will be case sensitive or not. This option defaults to
true.
```ruby ```ruby
class Person < ApplicationRecord class Person < ApplicationRecord