aurelia-json-schema-form

Build aurelia forms based on JSON schema! All built-in templates are styled with bootstrap 4.1.1

Use

• installation
  • npm install aurelia-json-schema-form
  • make sure to also install the peer dependencies:
    • npm install aurelia-validation
    • npm install bootstrap jquery popper.js (only required if you are using the built-in templates)
• reference the plugin in your aurelia bootstrapper entry point main.ts/js
  • aurelia.use.plugin(PLATFORM.moduleName("aurelia-json-schema-form")
  • customize the plugin by specifying PluginOptions configuration function
    • change the validation renderer
    • change templates
    • change validation messages
    • change log level
• add an <au-json-schema-form/> element:
  • Schema declaration:

    schema = {
      "type": "object",
      "properties": {
        "firstName": {
          "type": "string"
        },
        "lastName": {
          "type": "string"
        }
      },
      "required": [
        "firstName",
        "lastName"
      ]
    }

  • Form declaration:

    form: IFormOverride = {
      // match the property key of your json schema, provide optional nested properties/overrides
      firstName: {$noTitle: true},
      // keys leading with $ are override options
      $noSeparator: true,
      // keys leading with @ are emmet like containers to provide layouting, see below Features for details
      // the value is always an array of objects
      "@div.row": [
        {
          "@div.col": [
            {
              firstName: {}
            }
          ],
          "@div.col": [
            {
              lastName: {}
            }
          ]
        }
      ],
      // you can use void elements as well
      "@hr": [],
      // _element is BYO element option, see below Features for details
      "_element": {
        elementName: "task-list"
      }
    }

  • Add the custom element to your view

    <au-json-schema-form schema.bind="schema" form.bind="form" model.two-way="model" options.bind="{validateOnRender: true}"></au-json-schema-form>

Features

• Supported schema types:
  • string
  • number
  • array
  • object
  • boolean
• All schema types can be nested in array/object
• Default value population (even if not exposed in form) using default/const
• Emmet-like custom element containers! Wrap form elements in an emmet key (supports @element#id.class.class syntax)

  "@div.col": [
    {
      state: {}
    }
  ]

• BYO element
  • schemaKey is optional, it will bind schema and model to your element
  • validation does not occur on this schema key, you must perform your own validation
  • use:
    • create element i.e. my-custom-element.ts & my-custom-element.html
    • add element as a global resource in your bootstrapper/feature

      aurelia.use.globalResources(PLATFORM.moduleName("../path/to/my-custom-element"))

    • add _element key to your form overrides

      {
        _element: {
          elementName: "my-custom-element",
          schemaKey: "firstName"
        }
      }

Running the sample

1. install aurelia cli globally npm i -g aurelia-cli
2. clone repo and run npm install
3. run au run
4. open browser to http://localhost:8080

Coming soon/Need help with..

• optionally delete items from model on destroy
• bootstrap templates:
  • add date/time/date-time pickers
• add materialize templates
• add additional schema validation (maybe ajv)
• ability to declare keys you want to include/exclude for an easy, generic form

Contributing

Want to help? Submit a PR for an item above.