Admin->Teachers: Remove subject

[zishan0215]

So lets discuss this here

[wadhwasahil]

hi

[zishan0215]

haan to remove button ko code kar ke liye you need to know the fact that teacher_id cannot be empty

[wadhwasahil]

ok

[zishan0215]

its a simple process.. just update the subjects table and put teacher_id = 0

[wadhwasahil]

ek min mujhe kuch cheezen poochni hain

[wadhwasahil]

why increment option on edit student

[zishan0215]

har semester over hone ke baad semester increment ho jaata hai students ka

[wadhwasahil]

usse code kaise kiya ??

[wadhwasahil]

main to main cheez daali thi

[wadhwasahil]

submit krne ke baad ussi page par khul jata hai isse code kaise kiya?

[zishan0215]

dekhlo code main... subject_m main hai

[wadhwasahil]

  

[zishan0215]

just a query to increment the semester

[wadhwasahil]

   yeh kya krta hai

[zishan0215]

har student ka semester increment kar deta hai by 1

[wadhwasahil]

if($this->student_m->save($array,$this->data['student_id'])) { $this->data['confirmation'] = 1; } else { $this->data['confirmation'] = 2; }

[wadhwasahil]

yeh kya kr rha hai??

[zishan0215]

ye confirmation set kar raha hai.. agar update sahi hua to cofirmation positive hogi else negative

[wadhwasahil]

student_m mein sirf update name kiya hai semester kyu nhi kiya??

[tusharaheja]

are you alright sahil? you have the new code so you can see yourself ki use code kaise kiya gaya..!!!

[zishan0215]

public function update_semester() {
    $query = 'UPDATE student set semester = semester + 1';
    $q =$this->db->query($query);
    return $q;
}

[zishan0215]

ye hai query

[nickedes]

sahil for increment semester i just incremented the values of semester column in student table!

[nickedes]

use update query.

[wadhwasahil]

acha to ab yeh batao @zishanAhmad ki remove button mein kya kya options dene hain ?

[zishan0215]

kuch nahi

[zishan0215]

just remove the subject..(that is put teacher_id) = 0

[wadhwasahil]

why 0?

[zishan0215]

becuase that is what it has to be to unlink from the current teacher

[wadhwasahil]

isme remove button ke corresponding subject_id hoga na

[wadhwasahil]

tumne teacher_id hidden krke kyu dala hai

[zishan0215]

nahi.. you only need subject_code to update the teacher_id = 0

[wadhwasahil]

haan to subject code save kahan hua hai uss page pr

[zishan0215]

karlo tum.. remove waale button ka form jo hai.. usme hidden input le lo subject_code ka

[wadhwasahil]

tumne usme hidden mein teacher_id liya hai?? iska kya use hai?

[zishan0215]

that should be subject_code.. change karlo

[wadhwasahil]

remove krne ki coding kidhar hogi??

[zishan0215]

wahi pe.. view_teacher main

[wadhwasahil]

usme SQL commands chal jayenge?/

[zishan0215]

commands to likhi hui hain subject_m main

[wadhwasahil]

arre matlab query kahan bnaun ??

[wadhwasahil]

controller mein??

[zishan0215]

just use save

[zishan0215]

no need to write your own query

[wadhwasahil]

where to use save()?

[zishan0215]

view_teacher main

[zishan0215]

for eg.. refer to increment semester ...

[wadhwasahil]

arre bhai mere jo tum save() wali query hai vo to controlloer mein likhoge na

[zishan0215]

bhai.. save defined hai my_model main

[zishan0215]

itni jagah use kara hua hai.. search karo for save and see how it is being used