Custom fields

You can have custom fields on pages to set attributes (for example JSON-LD fields, the product's brand, etc.).

Custom fields can be configured:

  • Directly on the customFields prop of React Bricks configuration: they are applied to all pages
  • On the customFields prop of one pageType: they are applied only to that specific page type

Custom fields have their editing controls in the sidebar with a syntax that's almost identical to the definition of sidebar-edited props for content blocks. See sideEditProps.

Custom fields definition

Each element of the customFields array may be:

  • Directly a customField
  • A Collapsible group of customFields

Collapsible group

A collapsible group is an object with this interface:

interface ISideGroup {
groupName: string
defaultOpen?: boolean
show?: (props: Props) => boolean
props: ISideEditPropPage[]
  • The groupName is the name of the label used to collapse or expand the group of sidebar controls.
  • A group can be set as open or closed by default (defaultOpen, false by default).
  • A group can be hidden depending on the value of the component props (show function which receives the props as argument).
  • The props are an array of ISideEditPropPage. See below.

A Custom field

For each custom field, you can specify the prop and the type of control that you want to display.


Here is the Typescript interface for each custom field:

interface ISideEditPropPage {
name: string
label: string
type: SideEditPropType
component?: React.FC<ICustomKnobProps>
validate?: (value: any, props?: Props) => boolean | string
show?: (props: Props) => boolean
textareaOptions?: {
height?: number
imageOptions?: {
maxWidth: number
rangeOptions?: {
min?: number
max?: number
step?: number
selectOptions?: {
options?: IOption[]
getOptions?: () => IOption[] | Promise<IOption[]>
display: OptionsDisplay

Properties definition

nameThe name of the prop passed to the component.
labelThe label displayed in the edit Sidebar.

The IMAGE type is useful when you have an image that isn't edited visually, but in the sidebar, like a background image.

The CUSTOM type allows you to provide your own component to edit this prop.
componentOptional. Required in case of CUSTOM type. You can provide a custom component to edit this prop. It should be a React functional component with props value, onChange, isValid
validateValidation function. The value is valid if the function returns true.
If the returned value is a string, it is considered as an error message.

You can use the value of this prop, or, if you need it, you may access all the props' values using the second argument (which gets an object with all the key-value props).
showIf this function (which receives an object with all the key-value props) returns true, this editing control is shown in the sidebar.

It's useful to conditionally show a prop's control based on another prop (for example show the "rounded" prop for an image only if the image is loaded).
textareaOptionsHere you can specify the height for the textarea field.
rangeOptionsFor props of type NUMBER and RANGE, you may to specify the min, max and step values to correctly display the range selector.
selectOptionsFor a props of type SELECT, you may specify:

1. options: the array of options available to the user. Each option has a value (the value passed to the React component) and a label (the label shown to the user in the Sidebar).
See the IOption interface.

2. getOptions: function to return options as defined above. The function may return an array of options or a Promise which resolves as an array of options. Useful to have dynamic options, for example from an API call. Alternative to options

3. display: one of SELECT (drop down select), RADIO or COLOR (a colored circle for each color is shown). In case of Color, the value should be an object with a color prop, and any other prop you need returned to your component (for example a className).
See OptionsDisplay
imageOptionsFor props of type IMAGE, you may to specify the maxWidth value, so that the optimization algorithm knows that the max width of the image to create is 2x this maxWidth (for retina displays).

Usage example

// This are applied to all the pages
groupName: 'Real Estate',
props: [
name: 'type',
type: types.SideEditPropType.Text,
label: 'Property type',
name: 'surface',
type: types.SideEditPropType.Number,
label: 'Floor surface',
name: 'shortDescription',
type: types.SideEditPropType.Textarea,
label: 'Short description',
textareaOptions: {
height: 60,
// Applied only to the pages of type "product"
// This time we didn't create groups, but directly props
name: 'product',
pluralName: 'products',
defaultLocked: true,
defaultStatus: types.PageStatus.Draft,
getDefaultContent: () => ['hero-unit', 'product-details'],
customFields: [
name: 'brand',
type: types.SideEditPropType.Text,
label: 'Brand',
name: 'model',
type: types.SideEditPropType.Text,
label: 'Model',

Custom component

You can provide your own editing component for a customField (for example, a color picker).

In that case:

  • the type should be CUSTOM (types.sideEditPropType.Custom)
  • the component should be a functional component with props:
    • value (the value of the prop)
    • onChange (a function with the value as argument to set the new prop value)
    • isValid (true if the prop match the validation rule, false otherwise, so that you can apply a style in case of invalid status).