new update

sheets/admin.py

@@ -1,2 +1,45 @@
 from django.contrib import admin
+from .models import Client  # Only import Client
+from .models import SecondTableEntry
 
+# Register only the Client model
+@admin.register(Client)
+class ClientAdmin(admin.ModelAdmin):
+    list_display = ('name', 'address')
+    search_fields = ('name',)
+    
+    # Optional: Customize the add form fields
+    fields = ['name', 'address']
+
+@admin.register(SecondTableEntry)
+class SecondTableEntryAdmin(admin.ModelAdmin):
+    list_display = ('id', 'client', 'date', 'is_warm', 'lhe_output_short', 'notes_preview')
+    list_display_links = ('id', 'client')  # Fields that link to edit page
+    list_editable = ('is_warm',)
+    list_filter = ('is_warm', 'client')
+    search_fields = ('client__name', 'notes')
+    date_hierarchy = 'date'
+    ordering = ('-date',)
+    
+    fieldsets = (
+        (None, {
+            'fields': ('client', 'date')
+        }),
+        ('LHe Data', {
+            'fields': ('is_warm', 'lhe_delivery', 'lhe_output'),
+            'description': 'Enter all liquid helium measurements'
+        }),
+        ('Additional Info', {
+            'fields': ('notes',),
+            'classes': ('collapse',)
+        })
+    )
+    
+    # Custom display methods
+    def lhe_output_short(self, obj):
+        return f"{obj.lhe_output} L" if obj.lhe_output else "-"
+    lhe_output_short.short_description = 'Output'
+    
+    def notes_preview(self, obj):
+        return obj.notes[:30] + '...' if obj.notes else ""
+    notes_preview.short_description = 'Notes Preview'