Build an Inventory Management App with Flask & SQLite – Search, Sort & Validation ( Episode 3)

Описание: In Episode 3 of our Flask + SQLite Inventory Management App series, we upgrade the app with real-world usability features — Search, Sort, and Validation.

🔧 In this video, you’ll learn how to:

Add a search bar to filter inventory items dynamically

Implement sorting by name, quantity, or price using lambda functions

Use request.args.get() to handle query parameters in URLs

Add basic form validation to prevent invalid or empty user input

How to filter data in flask using search

🧠 Concepts Covered:

lambda functions for custom sort logic

request.args for handling search parameters

Sorting lists of tuples with key=lambda x: x[1].lower()

Form input validation using conditional checks

Jinja2 template logic to integrate dynamic search and sort into HTML

🔁 New to the series? Start from the beginning:
➤ Episode 1 – Setup + DB :    • Build an Inventory Management Web App with...  
➤ Episode 2 – Full CRUD :    • Build an Inventory Management Web App with...  

Timeline:
00:00 – Channel Intro & Welcome Back
00:26 – What We'll Build Today & What You'll Learn
00:50 – Reminder: Watch Episode 1 & 2 First (Recommended for Python Beginners)
01:02 – Like & Subscribe if You're Learning with Me
01:03 – Quick Recap of What We've Built So Far (Setup + CRUD)
02:41 – Adding the Search Feature to Filter Items by Name
07:54 – Testing Search Functionality & Fixing Bugs
08:28 – Implementing Sort Feature (Name, Quantity, Price)
12:48 – Explaining Lambda Functions & Key Coding Concepts
14:26 – Adding Form Validation (Empty or Invalid Inputs)
18:05 – Testing All Features: Search, Sort, Validation + Bug Fixes
19:32 – Quick Review of Everything Built in This Episode
19:54 – Asking for Comments & Questions from Viewers
20:09 – Invite to Share Project Ideas in the Comments
20:20 – Sneak Peek: What We'll Build in the Next Episode
20:30 – Final Thoughts: Like, Share & Subscribe – Thank You!


📦 By the end of this episode, your inventory app will support smarter searching, flexible sorting, and cleaner data input!


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