Question

I need to implement a query that checks two ids inside all records of a table,
I am trying the following query, but, Its not correct:

if StudentsCourses.all.where(:student_id == current_student.id && :course_id == session[:course_id]).count != 0

# do something
end

where student_id and course_id are foreign keys inside StudentsCourses

also, is there a better way rather than check result count not equal zero ?

Answer 1

unless StudentsCourses.where(:student_id => current_student.id, :course_id => session[:course_id]).empty?
  # do something
end

You were close!