Django Admin Read Only Dashboard

dashboard.py

''' model.py : showing the model created by python manage.py inspectdb > models.py '''
class Test(models.Model):
  datetime = models.DateTimeField(primary_key=True) # Time stamp value used as a dummy Primary Key for the model
  value_1 = models.CharField(max_length=25) # Composite key of value_1 & value_2
  value_2 = models.CharField(max_length=15) # Composite key of value_1 & value_2
  
  class Meta:
        managed = False
        db_table = 'tbl_test'
        verbose_name = 'Test Record'
    
''' admin.py : showing the changes needed for readonly data dashboard '''

from django.contrib import admin
from testproject.models import  Test # Test models as mentioned in the file above
# Admin class to customize the admin display
class TestAdmin(admin.ModelAdmin):
    
    list_display = ('value_1', 'value_2', 'datetime')  # The dashboard display value of table columns
    list_filter=['datetime'] # Filter added in case the user wants to filter via datetime
    search_fields =('value_1',) # Search filed added in case the user wants to search via value_1
    
    # Made the function return false to remove the default add button on the django admin
    # Thus removing the risk  of user trying to insert a record via a primary key
    def has_add_permission(self, request):
        return False
    
    # While the django model is initialized - inititlized the list_display_link to None 
    # Ensures removing of the hyperlink for django select object in admin
    # Thus removing the risk  of user by default selecting or trying to edit one particular object
    def __init__(self, *args, **kwargs):
        super(TestAdmin, self).__init__(*args, **kwargs)
        self.list_display_links = (None, )
        
    # Removing the default delete selected object action on the admin dashboard
    actions = [None]