How to insert values into array data type field (psql)

[littlemaster]

I am having table in psql it has one field as integer array data type.
From rails application I was not able to insert value in that filed.

Example:
Need to add multiple userid in the name field.

create table users(name integer[],id serial);

a=10
obj-User.new
obj.name='{a}' # this inserting value as a.
obj.name='{#{a} }' # this giving error.

If anyone faced and solved this issue , help me.

[improvcornartist]

You need to use double quotes for #{}, so obj.name="{#{a} }".