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Rajat Gupta
Rajat Gupta

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Building a Dynamic Form Tab for Better User Experience

When I started working on this feature, the main goal was to make it easier for users to manage multiple data records within a single form — without it feeling heavy or complicated. Each section of the form had its own set of fields, some of which depended on others. I wanted users to have a smooth experience while adding or editing entries, with clear validation and quick feedback.

What I Worked On

I built a dynamic form tab that lets users add multiple entries, automatically fill related fields, and validate everything on the go. The form supports both “add” and “edit” modes and handles several dependent dropdowns. For example, when a user selects one value, it automatically updates other related fields, keeping everything consistent.


How I Built It

I used React for the front end, Formik for handling the form state and validation, and Redux to manage shared data across the app.
All tabs in the form are connected to a single Formik instance, which makes it easy to collect and submit everything together instead of handling each section separately.

Validation is done using Yup, and it changes dynamically depending on what the user selects or the mode they’re in. I also added a small mechanism to track unsaved changes, so users get a warning before they move away from the form accidentally.


Challenges I Faced

One tricky part was making sure that when a new entry was added, it didn’t affect the data of already filled entries. I fixed that by assigning unique identifiers and managing each form section’s state independently.

Another challenge was setting up conditional validation — making sure the rules changed automatically depending on what users entered. I handled this by defining flexible Yup schemas that adapt based on the current form mode and values.


The Outcome

The new form tab made data entry much simpler and reduced a lot of errors. It’s now more reliable, easier to maintain, and can be reused in other parts of the application.
Overall, it improved both user experience and code scalability, while keeping the form logic clean and centralized.


What I Learned

Working on this taught me a lot about balancing usability with performance and maintainability. Handling complex, dynamic forms can get messy, but with the right structure and validation logic, it can be made smooth and efficient for users.

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