find_by_sql with array format in Rails 3

Question

good day guys! I'm using find_by_sql() in rails 3 to fetch records as follows. ``` @list=Email.find_by_sql(["SELECT * FROM Emails WHERE sent_id=?",params[:id]]) ``` How to modify the same statement if multiple parameter applies for same attribute, say for example : ``` @list=Email.find_by_sql(["SELECT * FROM Emails WHERE (sent_id=? OR from_id=?)",params[:id],params[:id]]) ``` Here, both sent_id and from_id attributes receives same parameter params[:id] So, instead of passing same params[:id] twice, is there any mechanism available to pass parameter based on order?

Accepted Answer

You can use a hash to name the interpolated values, like this:

```
@list = Email.find_by_sql(["SELECT * FROM Emails WHERE (sent_id = :id OR from_id = :id)", {:id => params[:id]}])
```

find_by_sql with array format in Rails 3

Solution

Problem