User table has a column called "name" and req.body.key = name. 
I don't want to write name = req.body.value. 
How do i somehow interpolate req.body.key? 
"{req.body.key}" doesn't work and console throws User.{req.body.key} does not exist.
function(req, res, next) {
    User.findAll({
        where: {
            //Question HERE
            req.body.key : req.body.value           
        }
    }).then(...).catch(...)
}
 
    