Custom Method in Rails Controller

Custom Method in Rails Controller

I need to call a custom method in my controller from my Android app. I
have a table name 'lists' which has multiple columns one of them being
'tableno'. I need to call a controller method which will fetch all the
rows from lists table in DB for the passed table number and return it as
JSON. In my app I will read the JSON. I have defined method in my lists
controller as below:
def tableOrder
@list = List.where(:tableno => params[:tableno])
respond_to do |format|
format.json { render json: @list }
end
end
In my routes file I have given
resources :lists do
member do
get 'tableOrder'
end
end
and the URL I am using to execute from my android app is lists/tableOrder
with get method. The parameters I send from my Android app is a
JSONObject: jsonObject.put("tableno", tableNo);. tableno here is the
actual column name in my lists table.
The problem is its not executing the query and giving Missing template
error. I checked the server and its not even reading the params I have
sent. I am new to rails and writing such a thing for first time so not
sure if I am missing something. Please advise. Thanks.