Is there any way to hide attributes in a Rails Jbuilder template?

Question

I know you can explicitly list fields like so,

json.(model, :field_one, :field_two, :field_three)

But is there anything similar to the following,

json.(model, except: :field_two)

which would output all of the model fields except the one called out?

Answer 1

Try json.merge! model.attributes.except("field_one", "field_two")

Answer 2

I had done something like this. Get an array of all desired attributes of model

model.attributes.keys.map { |key| key.to_sym } - [:field_one, :field_two]

Which can be written like

 model.attributes.keys.map(&:to_sym) - [:field_one, :field_two]

Then splat the array while passing in jbuilder

json.(model, *(model.attributes.keys.map(&:to_sym) - [:field_one, :field_two]))

Answer 3

这个宝石就是你所需要的。

json.except! @resource, :id, :updated_at

https://github.com/chenqingspring/jbuilder-except

Answer 4

对于非ActiveRecord对象，此类似模式有效（Rails 4）

 json.merge! @some_object.as_json.except("not_this_one")