Form definition - 6 UI

Forms define fields and similar components as well as their layout. Form definition is used in dialogs and the detail subapps of content apps.

This form definition is part of the Magnolia 6 UI framework. The fully qualified class name is info.magnolia.ui.editor.FormDefinition.

If you work with the Magnolia 5 UI framework, see Form definition for Magnolia 5 UI instead.

Example form definition

form:
  properties:
    salutation:
      label: Salutation
      $type: textField
      i18n: true
      description: hello
    firstName:
      label: First name
      $type: textField
      required: true
    lastName:
      label: Last name
      $type: textField
      required: true
    email:
      label: Email
      $type: textField
      required: true
      validators:
        email:
          $type: emailValidator

The properties list here is defined with the YAML list syntax.

When a property type is defined as a list in the corresponding Java class, you can use the YAML map syntax or list syntax. Map2BeanTransformer converts YAML in both cases correctly.

See YAML: Defining a list property via YAML map or list syntax.

Form properties

properties

required

A list of editor property definition items (typically, a list of fields).

See Field definition for more information.

layout

optional, default is info.magnolia.ui.framework.layout.PlainFormLayoutDefinition

The value must be a fully qualified class name and a subtype of info.magnolia.ui.framework.layout.LayoutDefinition.

See Form definition - 6 UI for more information.

Available field definition classes

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Form layout

Plain layout

With the plain layout, it is not possible to configure anything. Use this layout class when there is no need for customization.

The fully qualified class name of the plain layout is info.magnolia.ui.framework.layout.PlainFormLayoutDefinition.

Tabbed layout

With the tabbed layout, you can add or remove tabs and fields. It is not possible to change how any tabs and fields are rendered. Use this layout class when the need for customization is minimal.

The fully qualified class name of the tabbed layout is info.magnolia.ui.framework.layout.TabbedLayoutDefinition. If the definition class is annotated with info.magnolia.ui.framework.layout.LayoutType, you can use the $type alias tabbedLayout instead.

Example tabbed layout definition

layout:
  class: info.magnolia.ui.framework.layout.TabbedLayoutDefinition
    tabs:
      personal:
        fields:
          - name: salutation
          - name: firstName
          - name: lastName
      details:
        fields:
          - name: email
          - name: phone
      address:
        fields:
          - name: streetAddress
          - name: postalCode
          - name: city
          - name: country

Declarative layout

With the declarative layout, you can create form entries in an arbitrary Vaadin component container using the Vaadin declarative syntax. Use this layout class for full customization.

The fully qualified class name of the declarative layout is info.magnolia.ui.framework.layout.DeclarativeLayoutDefinition. If the definition class is annotated with info.magnolia.ui.framework.layout.LayoutType, you can use the $type alias declarativeLayout instead.

Example declarative layout definition

layout:
  class: info.magnolia.ui.framework.layout.DeclarativeLayoutDefinition
  template: /contacts/layouts/edit-contact.html

To render the layout, a template property is required. Because the Vaadin declarative syntax is used to design custom layouts, the declarative template has to be an HTML document.

In the template, t he tag of a component element can have one of the following prefixes:

vaadin-: Vaadin core component.
mgnl-: Magnolia predefined or user-defined component. To define a mapping between a tag prefix and the Java package of the component, see the "Component Prefix to Package Mapping" section of Designing UIs Declaratively. The following Magnolia predefined components are available:
- <mgnl-separator/>: horizontal line to separate content.
- <mgnl-group caption="">: group header with a caption attribute to separate content.
form-: Magnolia property as defined in YAML.

You can always use Magnolia predefined or user-defined components and Magnolia properties with Vaadin core components.

Example declarative template

<html>
    <head>
        <meta name="package-mapping"
              content="custom:info.magnolia.contacts.layout"/>
    </head>
    <body>

        <custom-vertical-layout spacing="false">
            <vaadin-vertical-layout spacing="false" style-name="my-container">
                <vaadin-label width-auto>Hello declarative layout</vaadin-label>
                <mgnl-separator/>
                <vaadin-label width-auto>${i18n.get("contacts.label")}</vaadin-label>
            </vaadin-vertical-layout>

            <mgnl-group caption='${i18n.get("contacts.personal")}'>
                <vaadin-form-layout>
                    <form-salutation/>
                    <form-firstName/>
                    <form-lastName/>
                </vaadin-form-layout>
            </mgnl-group>

            <mgnl-group caption="Details">
                <vaadin-form-layout>
                    <form-email/>
                    <form-phone/>
                </vaadin-form-layout>
            </mgnl-group>

            <mgnl-group caption="Address">
                <vaadin-form-layout>
                    <form-streetAddress/>
                    <form-postalCode/>
                    <form-city/>
                    <form-country/>
                </vaadin-form-layout>
            </mgnl-group>

        </custom-vertical-layout>

	</body>
</html>

It is recommended that Magnolia properties be nested inside a <vaadin-form-layout> tag. If you insert a Magnolia property inside a <vaadin-vertical-layout> tag, the component will not be rendered as nicely.

src/main/resources/info/magnolia/contacts/layout/my-style.css

.my-container {
    background-color: #93bbc4;
}

src/main/java/info/magnolia/contacts/layout/VerticalLayout.java

package info.magnolia.contacts.layout;

import com.vaadin.annotations.StyleSheet;

@StyleSheet("my-style.css")
public class VerticalLayout extends com.vaadin.ui.VerticalLayout {
}

If VerticalLayout.java is stored in src/main/java/info/magnolia/contacts/layout, my-style.css should be added to src/main/resources/info/magnolia/contacts/layout.

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