SQLite：使用变量进行字符串插值

Question

I am making an ajax request in my Rails 4 app and I cannot get my search query to function properly. I have 1 search that works where I query:

list = list.where(TARGET_NAME like :search or BAR like :search, search: "%#{params[:search]["value"]}%")

which outputs the following:

SELECT COUNT(*) FROM "list" WHERE (TARGET_NAME like '%x%' or BAR like '%x%')

I have another search where the thing being searched is also a variable and I tried to copy the query above with the following:

list = list.where(:column like :search, column: $other_list[col[0]], search: "%#{col[1]["search"]["value"]}%"

which outputs the following:

SELECT COUNT(*) FROM "list" WHERE ('TARGET_NAME' like '%x%')

Due to the fact that TARGET_NAME is in quotes in the query, I get 0 results returned. How do I inject a variable there without the quotes?

Answer 1

我敢肯定有一种方法可以通过变量来完成此操作，但是我只是用$other_list[col[0]]替换了变量:col ，从而发出了请求：

list = list.where("#{$other_list[col[0].to_i]} like :search", search: "%#{col[1]["search"]["value"]}%")