change Himalaya Bhawan Boys to EWS Boys

constants/residences.py

@@ -14,7 +14,7 @@
 RAJENDRA_BHAWAN = 'rjb'
 RAJIV_BHAWAN = 'rgb'
 RAVINDRA_BHAWAN = 'rvb'
-HIMALAYA_BHAWAN_BOYS = 'hlb'
+EWS_BHAWAN_BOYS = 'ewb'
 BOYS_HOSTELS = (
     (AZAD_BHAWAN, 'Azad bhawan'),
     (CAUTLEY_BHAWAN, 'Cautley bhawan'),
@@ -26,7 +26,7 @@
     (RAJENDRA_BHAWAN, 'Rajendra bhawan'),
     (RAJIV_BHAWAN, 'Rajiv bhawan'),
     (RAVINDRA_BHAWAN, 'Ravindra bhawan'),
-    (HIMALAYA_BHAWAN_BOYS,'Himalaya bhawan (boys)')
+    (EWS_BHAWAN_BOYS,'EWS bhawan (boys)')
 )
 
 # Girls' hostels

migrations/0019_alter_residence_code.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.5 on 2025-07-27 20:15
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('shell', '0018_nonteachingstaff'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='residence',
+            name='code',
+            field=models.CharField(choices=[('azb', 'Azad bhawan'), ('ctb', 'Cautley bhawan'), ('gnb', 'Ganga bhawan'), ('gvb', 'Govind bhawan'), ('jlb', 'Jawahar bhawan'), ('mvb', 'Malviya bhawan'), ('rkb', 'Radhakrishnan bhawan'), ('rjb', 'Rajendra bhawan'), ('rgb', 'Rajiv bhawan'), ('rvb', 'Ravindra bhawan'), ('ewb', 'EWS bhawan (boys)'), ('snb', 'Sarojini bhawan'), ('kgb', 'Kasturba bhawan'), ('igb', ' Indira bhawan'), ('vbg', 'Vigyan bhawan (girls)'), ('hia', 'Himgiri apartment'), ('hlg', 'Himalaya bhawan (girls)'), ('gph', 'G.P. hostel'), ('mrc', 'M.R. Chopra hostel'), ('azw', 'Azad wing'), ('dsb', 'D.S. Barrack hostel'), ('ank', 'A.N. Khosla house'), ('khs', 'Khosla international house (stay)'), ('mhs', 'Vidyasagar bhawan'), ('ncn', 'N.C. Nigam house'), ('fah', 'Faculty home'), ('khg', 'Khosla international house (guest)'), ('vib', 'Vigyan bhawan'), ('vik', 'Vikas nagar'), ('nit', 'Niti nagar'), ('jkh', 'Jai Krishna house'), ('shi', 'Shivalik apartments'), ('hva', 'Hill view apartments'), ('oth', "Old teachers' hostel"), ('far', 'Faculty residences'), ('doc', 'Doctoral residences'), ('nor', 'Non-resident')], max_length=3, unique=True),
+        ),
+    ]

migrations/0020_update_hlb_to_ewb.py

@@ -0,0 +1,18 @@
+from django.db import migrations
+import swapper
+
+
+def update_hlb_to_ewb(apps, schema_editor):
+    Residence = swapper.load_model('kernel','Residence')
+    Residence.objects.filter(code='hlb').update(code='ewb')
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('shell', '0019_alter_residence_code'),
+    ]
+
+    operations = [
+        migrations.RunPython(update_hlb_to_ewb, reverse_code=migrations.RunPython.noop),
+    ]