For editing a particular student first we have to see all students in a view format.so editing has 2 main regions...
1.)Viewing all students:

  •    Create a method in student controller - show().
  •     Create a method in student_model - show_all().
  •      Create table view-show_all.php.




      These 3 steps will give uall the details of students in table format.Next we have to edit the particular student's data.


2.)Editing the particular student's data:
  • Create a method in student controller  edit().
  • Create a method in model that fetches the data from the dable show_one().
Create a view page edit_student.php



3.)On updating the data :