Ruby on rails 3：搜索多个参数？

Question

I have a search box, and need to search through 2 parameters, "title" or "tags" using the query. I can get one parameter to work, but not two, tried 'OR', '||', ',' nothing works.

Whats the answer ?

Original code: Book.where("title LIKE ?" , "%#{query}%")

What I need: Book.where("title LIKE ?" , "%#{query}%" OR "tags LIKE ?" , "%#{query}%")

Answer 1

Book.where("title LIKE ? OR tags like ?" , "%#{query}%", "%#{query}%")

You should have the "full" SQL query first which contains the placeholders ( ? ) as the first argument for the where query and then the remaining arguments are simply the replacements for the placeholders.

For more information please see the Active Record Querying guide .

Answer 2

I suggest you take a look at metawhere which is dedicated to complicated queries (I know this one isn't but it worth noticing).

See Railscast .

Answer 3

来自Rails指南 ：

Client.where("orders_count = ? AND locked = ?", params[:orders], false)