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Define a Default Value for an Array of Items as a String with a Radio Layout

7 replies
Last updated: Apr 11, 2021
Is there a way to define a default value for an array of items as a
string
with a
radio
layout?
type: 'string',
options: {
    layout: 'radio',
    list: [
        { title: 'Left', value: 'left', default: true }, // here?
        { title: 'Right', value: 'right' }
    ],
}
Apr 11, 2021, 6:29 PM
You’ll want to set the default using the
initialValue
object, which goes outside of
fields[]
. Assuming your
string
is called list, you can set its
initialValue
to the value of the radio button you want selected:

fields: [
  {
    name: 'list',
    type: 'string',
    options: {
      layout: 'radio',
      list: [
        { title: 'Left', value: 'left' },
        { title: 'Right', value: 'right' },
      ],
    }
  },
],
initialValue: {
  list: 'left'
}
Apr 11, 2021, 7:18 PM
Hm ok, interesting!
Apr 11, 2021, 7:22 PM
I've tried it on my field but it doesn't seem to work
export default {
    name: 'project_screenshots',
    title: 'Screenshots',
    type: 'object',
    fields: [
        {
            name: 'type',
            title: 'Screenshot type',
            type: 'string',
            options: {
                list: [
                    { value: 'stack', title: 'Stacked' },
                    { value: 'two-cols', title: 'Two columns' },
                ],
                layout: 'radio',
                direction: 'horizontal',
            },
            initialValue: {
                list: 'left'
            },
            preview: {
                prepare ({ title }) {
                    return {
                        title: title.value
                    }
                }
            }
        },
Apr 11, 2021, 7:23 PM
initialValue
will need to be a sibling of
fields[]
.
Apr 11, 2021, 7:24 PM
Oh, ok. Does it work with multiple fields in an object tho?
Apr 11, 2021, 7:24 PM
I have multiple sets of "radios" fields in the same object
Apr 11, 2021, 7:24 PM
I don’t believe
initialValue
can be set on items in an object. https://github.com/sanity-io/sanity/issues/1581
It may be possible using
Initial Value Templates . I’ll have to give it a try later.
Apr 11, 2021, 8:13 PM

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