The operator *<<* is better to add info into a variable.
For example:
name = ""
name.object_id
=> 70341910843080
name << "Jhon "
name.object_id
=> 70341910843080
name << "Doe "
name.object_id
=> 70341910843080
Note that the object_id is always the same.
It's not create a new object.
*Now, let see this:*
name = ""
name.object_id
=> 703419105*94080*
name += "John"
name.object_id
=> 703419105*49640*
name += " Doe"
name.object_id
=> 703419105*14060*
Note that always a new object will be created.
But if you wanna put a String with interpolation into a variable, how this:
flash[:success] = "Your payment has completed. Please contact #{@
order.seller.name} (mobile: #{@order.seller.mobile_number}, email:
#{@order.seller.email} )"
I'll do the same way that you, because I lost just a little performance,
but my code would be cleaner.
Or you prefer:
flash[:success] = "Your payment has completed. Please contact "
flash[:success] << @order.seller.name
flash[:success] << "(mobile: "
flash[:success] << @order.seller.mobile_number
flash[:success] << ", email: "
flash[:success] << @order.seller.email
flash[:success] << ")"
flash[:success]
rsrs... Ruby is clean man. Your interpolation is the better way.
flash[:success] = "Your payment has completed. Please contact #{@
order.seller.name} (mobile: #{@order.seller.mobile_number}, email:
#{@order.seller.email} )"
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