We have a json schema that includes a field, for which we want to control the value via the schema (rather than having the user specify the value).
We can set a default value - but this is simply overwritten by the formData that the user parses.
Is there a way to "lock" the field value to the default value provided in the schema, ensuring that the formData is updated with the schema-specified value?
{
"meta": {
"title": "SCHEMA REVISION",
"type": "object",
"properties": {
"rev": {
"title": "We want to lock the below default value via the schema",
"type": "string",
"default": "10.00"
}
}
}
}
Sorry, you cannot do this using the schema alone. It's not designed to be used for forms, so it doesn't have that functionality.
It sounds like you want a read-only field. The documentation for react JSON Schema form supports this: https://github.com/mozilla-services/react-jsonschema-form#read-only-fields
The ui:readonly uiSchema directive will mark all child widgets from a given field as read-only.
Note: the uiSchema is in addition to your JSON Schema.