Ruby on rails rails 3,按sql查找,日期格式,参数太少错误
我有下面的find_by_sql,得到一个“参数太少”错误。有什么好主意吗?希望将其保留为find_by_sqlRuby on rails rails 3,按sql查找,日期格式,参数太少错误,ruby-on-rails,ruby-on-rails-3,Ruby On Rails,Ruby On Rails 3,我有下面的find_by_sql,得到一个“参数太少”错误。有什么好主意吗?希望将其保留为find_by_sql dates=find_by_sql(['select DATE(start_datetime) date_only, DATE_FORMAT(start_datetime,\'\%b \%D\') as formatted_date from events where area_id=1 group by date_only']) thx您需要使用双百分比符号来转义查找程序中的百
dates=find_by_sql(['select DATE(start_datetime) date_only, DATE_FORMAT(start_datetime,\'\%b \%D\') as formatted_date from events where area_id=1 group by date_only'])
thx您需要使用双百分比符号来转义查找程序中的百分比:
dates = find_by_sql(['select DATE(start_datetime) date_only, DATE_FORMAT(start_datetime,\'\%%b \%%D\') as formatted_date from events where area_id=1 group by date_only'])