Common Issues ui

Form Validation Not Working Properly

Forms in your app don't validate input correctly. They might accept invalid data (empty required fields, invalid emails), show error messages that don't match the problem, or refuse to submit even with valid data.

Common Causes

  • Validation only on the frontend โ€” no server-side checks
  • Validation rules don't match the actual requirements
  • Error messages are generic or misleading
  • Form state management is buggy โ€” the form doesn't know which fields changed
  • Submit button disabled permanently after one failed submission

How to Fix It

  1. Test each form field with empty, invalid, and valid data to identify which validations are broken
  2. Check the browser console for JavaScript errors during form submission
  3. Verify that the server also validates data โ€” don't rely only on frontend validation
  4. Make sure the submit button re-enables after validation errors are fixed
  5. Check that error messages clearly indicate which field has the problem

Real developers can help you.

Milan Surelia Milan Surelia Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems. Expertise: ๐Ÿ’ก Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web. ๐Ÿ–‹๏ธ Sharing insights through technical writing, blogging, and open-source contributions. ๐Ÿค Collaborating closely with designers, PMs, and developers to build seamless mobile experiences. Notable Achievements: ๐ŸŽฏ Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX. ๐Ÿš€ Launched Compose101 โ€” a Jetpack Compose starter kit to speed up Android development. ๐ŸŒŸ Open source contributions on Github & StackOverflow for Flutter & Dart ๐ŸŽ–๏ธ Worked on improving app performance and user experience with smart solutions. Milan is always happy to connect, work on new ideas, and explore the latest in technology. Nam Tran Nam Tran 10 years as fullstack developer Krishna Sai Kuncha Krishna Sai Kuncha Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : ) Simon A. Simon A. I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. legrab legrab I'll fill this later zipking zipking I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify. As an INFJ-T, I approach development with a "systems-thinking" mindsetโ€”balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value. prajwalfullstack prajwalfullstack Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help Jaime Orts-Caroff Jaime Orts-Caroff I'm a Senior Android developer, open to work in various fields Anthony Akpan Anthony Akpan Developer with 8 years of experience building softwares fro startups

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Frequently Asked Questions

The form submits but doesn't save the data. What's wrong?

The frontend form is probably submitting but the API call to save the data is failing. Check the Network tab for errors on the submit request.

I can't submit the form even with valid data. Why?

The validation logic might have a bug that always marks a field as invalid. Check the console for errors, or the submit button might be stuck in a disabled state.

Related Common Issues Issues

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