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Component Declaration JSON Schema

This guide explains the JSON schema used to declare components in Hyva CMS. It covers the key elements and rules to help you create well-structured, consistent components.

Where possible, Hyvä CMS, will give you an exception in Developer mode to tell you if you make a mistake, so you can identify and fix quickly and easily.

Warning

This documentation may not reflect the latest schema changes before the first general release. Always refer to the component-declaration.json schema file for the most up-to-date information.

For a complete example JSON used for component declaration see below.

Overview

Schema Version: JSON Schema Draft 2020-12
Schema ID: hyva-liveview://schema/component-declaration.json
Data Type: Object

Component Identifier

Definition: A unique key for each component declaration
Rules:
- Must be a string at least 3 characters long
- Only letters, numbers, dashes, or underscores are allowed

Main Component Properties

Within each component declaration object, you can define the following:

label (Required)

Type: String
Purpose: The label of the component, providing a user-friendly name in the Hyvä CMS editor
Note: If not set, the component name will be used instead

category (Optional)

Type: String
Purpose: Groups components in the Hyvä CMS editor interface
Default: "Other"

template (Optional)

Type: String or Boolean
Purpose: Specifies the template file for the component. If omitted, a default path is used in the current module: [Vendor]_[Module]::elements/[component-name].phtml. When set to false, the component will not use its own template - useful for child components that are rendered within their parent component's template (like the usp items in a usp_list).
Pattern: Must follow the format [Vendor]_[Module]::[template path].phtml

icon (Optional)

Type: String
Purpose: Specifies the icon file for the component
Pattern: Must follow the format [Vendor]_[Module]::[icon path].(jpg|jpeg|png|gif|webp|svg|avif)
Default: Hyva_CmsLiveviewEditor::images/components/default.svg

content, design, advanced (Optional)

Type: Object
Purpose: Groups of fields organized by their purpose
Content: Contains the main content fields of the component
Design: Contains fields related to the visual appearance
Advanced: Contains fields for more complex or technical configurations

custom_properties (Optional)

Type: Array
Purpose: Reserved to allow extending the component declaration with custom properties by developers & partners.

Component Field Declarations

Each field group (content, design, advanced) contains field declarations that define the component's editable properties. A field must be unique to all the fields in all the groups, an exception will be given in developer mode if a field with the same identifier is defined in another group.

Field Declaration Properties

includes (Optional)

Type: String or Array of Strings
Purpose: Special property to include fields from another component field declaration file
Pattern: Must follow the format [Vendor]_[Module]::[path/to/file].json

Field Identifier

Rules:
- Must be a string at least 3 characters long
- Only letters, numbers, dashes, or underscores are allowed

Field Configuration

Each field configuration includes:

type (Required)

Type: String
Purpose: Determines the kind of data the field will hold in the Hyvä CMS editor
Allowed Values: "boolean", "children", "color", "date", "html", "image", "link", "multiselect", "number", "products", "richtext", "select", "text", "text-align", "textarea", "variant", "custom_type"

custom_type (Optional)

Type: String
Purpose: Specifies a custom field type when type is set to "custom_type"

label (Required)

Type: String
Purpose: The label for the field in the Liveview editor form

default_value (Optional)

Purpose: The initial value assigned to the field when a new component is created

attributes (Optional)

Type: Object, string, number, integer, boolean, null, or array
Common Properties:
minlength (string)
maxlength (string)
placeholder (string)
required (boolean)
comment (string)
Purpose: Sets HTML input attributes (placeholder, validation rules, etc.) for compatible field types

options (Optional)

Type: Array or String
Purpose: Configures available choices for fields that support selection
Allowed Values:

Array of Choice Objects: Each object contains label and value properties

"options": [
  {
    "label": "Heading lv1",
    "value": "h1"
  },
  {
    "label": "Heading lv2",
    "value": "h2"
  }
]

Source Model String: A fully qualified PHP class name (with escaped backslashes) that implements OptionSourceInterface, optionally followed by ::methodName
```
"options": "Vendor\\Module\\Model\\Source\\Options"
```

config (Optional)

Type: Object
Purpose: Configuration settings that define component behavior and relationships
Properties:
accepts (array): For children fields, specifies allowed child components
```
"config": {
  "accepts": ["button", "icon", "heading"]
}
```

custom_properties (Optional)

Type: Array
Purpose: Allows extending individual field declarations with custom properties

Examples

See below and the Hyva_CmsBase module for more examples of components.

{
  "button": {
    "label": "Button",
    "category": "Example",
    "template": "Vendor_MyModule::elements/button.phtml",
    "icon": "Vendor_MyModule::images/components/button.svg",
    "content": {
      "text": {
        "type": "text",
        "label": "Button Text",
        "default_value": "Click me",
        "attributes": {
          "required": true,
          "placeholder": "Enter button text"
        }
      },
      "link": {
        "type": "link",
        "label": "Button Link"
      }
    },
    "design": {
      "includes": "Hyva_CmsBase::etc/hyva_cms/default_design.json",
      "alignment": {
        "type": "text-align",
        "label": "Alignment"
      }
    },
    "advanced": {
      "includes": "Hyva_CmsBase::etc/hyva_cms/default_advanced.json"
    }
  }
}