json.array! @reports, :id, :count always give me all the attributes.[Not an issue]

[gazeldx]

Env: jbuilder (2.11.3), Rails 6.1.4.1.

Controller:

def index
    @reports = Report.all.order(:id)
    respond_with @reports
end

index.json.jbuilder:

json.array! @reports, :id, :count

• Expected result: Only attributes :id and :count were generated in the json result, like:

[{"id":1,"count":502},
{"id":2,"count":508}]

• Actual result: All the attributes were generated in the json result, like:

[{"id":1,"count":502,"fee":59,"duration":1098,"customerid":"65102","customername":"测试数据1"},
{"id":2,"count":508,"fee":87,"duration":2391,"customerid":"65103","customername":"测试数据2"}]

[gazeldx]

This is caused by my view didn't follow Rails' naming convention. Not an issue of jBuilder.