Rails - how to store large numbers like 100000076685963

问题

I need to store large numbers like :100000076685963

Which are to big for a db field type of integer. In my db migration I use:

  t.integer :fb_uid

what field type should I use for large numbers like this?

Thanks

回答1:

You can use a fixed-point datatype such as decimal with a large precision. Based on the number you've given, a precision of 15 will work but you should figure out exactly what range you are expecting.

t.decimal :fb_fluid, :precision => 15

回答2:

Try float

t.float :fb_uid

And seems like this is something to do with Facebook (probably facebooker) and assuming these numbers will not use as arithmetic operations, you could probably use just string

t.string :fb_uid

回答3:

You need to set the limit field in for the column to get Postgresql's bigint precision:

t.integer :fb_uid, limit: 8

来源：https://stackoverflow.com/questions/5919303/rails-how-to-store-large-numbers-like-100000076685963