Django Tutorial #29: ORM Lookups (startswith, contains, range, gt, lt) | Client–Server–Database Flow

Описание: 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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