Rails - check if record exists in has_many association

Question

I\'m not sure if my question is worded correctly.

I have three models: User, Item, and UserItem.

user has_many         


        

Answer 1

Extending @lei-liu's answer here. One can find if the record exists among the many or not, through: current_user.items.exists?(params[:id])

At the same time, exists? allows one to filter through the columns besides id, and also allows for more complicated conditions, like the following:

current_user.items.exists?('id > 3')
current_user.items.exists?(name: 'some_name')