I have a student array object which returns multiple attributes. I need to extract only specific attributes from this array. Here is the code that I have tried
@project.each do |p|
@students << Student.find_by_id(:id => p.receiver_id, :select => "first_name, last_name")
end
But it is showing Unknown keys :id. I need only the first name and the last name to be inserted in @students array. I am using rails 2.3 and ruby 1.8.7. Please help.
You are getting that error because it should be:
@project.each do |p|
@students << Student.find_by_id(p.receiver_id)
end
If you only want the first names and last names, then you might consider:
@project.each do |p|
student = Student.find_by_id(p.receiver_id)
@students << { :first_name => student.first_name, :last_name => student.last_name }
end
If you want an array, then:
@project.each do |p|
student = Student.find_by_id(p.receiver_id)
@students << [student.first_name, student.last_name ]
end
The first version would give you an array of hashes. The second version would give you an array of arrays.
