instance method
select_value
Ruby on Rails 5.0.7.2
Signature
select_value(arel, name = nil, binds = [])Returns a single value from a record
Parameters
-
arelreq -
nameopt = nil -
bindsopt = []
Source
# File activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb, line 52
def select_value(arel, name = nil, binds = [])
arel, binds = binds_from_relation arel, binds
if result = select_rows(to_sql(arel, binds), name, binds).first
result.first
end
end
Defined in activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb line 52
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Defined in ActiveRecord::ConnectionAdapters::DatabaseStatements