How to Update Database Data from User Input in Flutter

Learn how to successfully update user data in a Flutter application using input text fields. This guide guides you step-by-step through the necessary code changes and considerations.
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: I want to update my DB data from user Input text field

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Update Database Data from User Input in Flutter

Updating data in a database from user input is a common scenario in Flutter applications. However, for beginners, it can be quite challenging to implement correctly. In this guide, we'll discuss how to successfully update user data based on their input and ensure that your TextFormField displays the existing values. We'll break this down into clear and easy-to-follow sections.

The Problem

You may find yourself wanting to update user information such as names, emails, and addresses based on their ID. After gathering user details, you might want to replace existing data with new input. However, many beginners face an issue: the text fields remain empty or display unexpected values instead of the current values stored in the database.

Overview of the Solution

To solve the problem of updating user data correctly, we need to ensure that:

Retrieve Existing Data: Fetch existing user data based on the user ID.

Bind Existing Data to Input Fields: Populate the text fields with current values from the database.

Implement Update Logic: Write a function that updates the data to the database when the user interacts with the input fields.

Step 1: Retrieve Existing Data

You can retrieve user data using an HTTP GET request. This data will be needed as the initial state of your text fields. Let’s set up our data-fetching function.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Bind Existing Data to Input Fields

Next, it’s essential to bind this existing data to the text fields. We will utilize a FutureBuilder to build the UI based on the retrieved data. It's important to set the text controller to display the existing data.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Implement Update Logic

Finally, we need to write the update function that takes user inputs from the text fields when the update button is pressed. Your updateData function sends a PUT request to modify the existing data.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

In this guide, we explored how to update database data from user inputs in Flutter. By following these steps:

Retrieving existing data properly

Binding this data to user input fields

Implementing an update function correctly

you can ensure a seamless user experience when it comes to managing data in your application. If you have any questions or run into any issues, feel free to ask for help!