JSON Schema Form Generator

Generate validating forms from JSON schemas.

elm package install potocpav/elm-json-forms

Features

• Can handle most of the UI Schema specification
• Can handle almost all JSON Schema features (draft-04 and draft-06).
• Generates all common types of input fields (text, select, etc.) with optional labels and descriptions.
• Error messages can easily be customized as needed.
• Supports custom string formats using validation functions (similar to Json decoders).
• Comes with default Tailwind CSS theme in the Theme object that can be customised.

Fresh and Unimplemented Features

• Fix multiple forms on the same page sharing IDs
• Validate e-mails
• Layout
  • Remove unnecessary nested formRow items for horizontal layout inside vertical layout
• Control Example
  • Descriptions as tooltips for Booleans
  • Asterisks for required fields
  • Toggle buttons for booleans
  • Trim text
  • Restrict text
  • Hide required asterisk
• Categorization Example
  • Fix multiple categorizations in one schema (in vertical layout)
  • Rules to show and hide categories
  • Implement prev/next buttons
  • Implement stepper variant
• Rule example
  • Groups
  • Group labels
  • Rule to enable/disable
  • Rule to show/hide
• Layout example
• Generate UI Schema example
  • Fix groups

Warnings

1. There is currently no support for linked schemas using $ref.

Example usage

See the example project for examples