如何在轨道上使用 ruby 声明动态数组

Question

i am trying to declare a dynamic array like below.

<% Product_in_Stock_array = [] %>

but it is not working giving syntax error.

Answer 1

You have to be a bit more specific.

The code you have is most likely an erb template file. This is actually a valid erb template

ERB.new('<% Product_in_Stock_array = [] %>').result

Your syntax error has to be somewhere else.

Additionally you most likely want to create a variable not a constant. In Ruby names starting with capital letter are constants (written in UpperCamelCase or UPPER_CASE most often), normal variables are written in camel_case .