Property from attr_accessor does not show when I render json

问题

In Rails, I have a User model. I added attr_accessor :scoreto the model.

If I render the JSON for one user, I do not see the "score" attribute. Why is this?

user = User.find(3)
user.score = 55
render json: user

回答1:

render json: user, methods: [:score]

attr_accessor is alternative for getter and setter method so it is a method and as I have mentioned we can call it as above

来源：https://stackoverflow.com/questions/30641623/property-from-attr-accessor-does-not-show-when-i-render-json