将应用程序部署到Rails上的生产之后，我们可以连接到多个数据库连接吗？

Question

I am new to Rails and need some help on this! Can we connect to a local database and production database simultaneously after the project has been deployed to production ??

for example : My application when deployed to production, with a click of a button on the page, it should toggle between the usage of production database and the user's local database.Is that possible ?

Thanks!

Answer 1

You can do this, there are some clues in the comments here:

• ActiveRecord/Base/connection
• ActiveRecord/Base/establish_connection/class
• Useful explanation of establish_connection

And a more comprehensive guide here:

• dynamic-database-switching-rails-how-to-do-it

But it's a bit of a faff - why do you need to do this, maybe there is another way to achieve what you want?