Django Tutorial #29: ORM Lookups (startswith, contains, range, gt, lt) | Client–Server–Database Flow
In Session 29, we dive deeper into Django ORM lookups, which help us filter database records efficiently without writing SQL queries.
You will learn how different lookup expressions work in real projects and how frontend, backend, and database communicate together in a Django application.
🔍 Topics Covered in This Session
What are Django ORM Lookups
Filtering data using:
startswith – records starting with specific characters
endswith – records ending with specific characters
contains – records containing specific text
icontains – case-insensitive contains
exact – exact match
iexact – case-insensitive exact match
in – filter records using a list of values
range – filter data between a range (e.g., salary range)
lt, lte – less than / less than or equal
gt, gte – greater than / greater than or equal
How Client (Frontend) sends requests
How Backend (Django Views / Services) processes logic
How Database + ORM returns filtered results
Complete request–response flow in Djang
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