I have a students array like this
[#<Student id: 2, admission_no: "2", gender: "m", blood_group: "A">,#<Student id: 3, admission_no: "3", gender: "m", blood_group: "A">]
I am getting this array via named_scope .... So is there any way to select only required attributes with named scope... I need to delete admission_no and blood_group from this and return an array only with students id and gender.. How is it possible. Iam using rails2.3
named_scope_result.select('id, gender') will give you your desired result.
You want to have an array of hashes containing only the required fields, starting from your array.
Student.select('id, gender').find(:all)
will do if you want to consider all the Student objects in your database.
Starting from a generic Student array: students, you can achieve what you want by:
result = Array.new
students.each |s| do
data = { "id" => s.id, "gender" => s.gender }
result << data
end
Student.select('id, gender').find(:all).map(&:attributes) do the job?do this Student.select('id, gender').find(:all)
