[Question] Dynamic titles for array fields

[joshhornby]

Prerequisites

• [ x ] I have read the documentation;

I am looking into a way of generating dynamic titles for items in an Array Field. In my current schema I have two array fields so only want to target one with the custom dynamic titles.

In this case each title should be a day of the week, this data is coming from the formData being passed in. So each object in the array would have a title.

My questions are:

1. Is it possible to render a dynamic title based off a property?
2. If not, how can I define a custom template for only one array field at a time?

Thanks

[shortwavedave]

I also need this feature - is there any way to accomplish this?

[epicfaace]

1. There is currently no way defined by JSON Schema to change the schema based on the data. There is a proposal for the $data keyword, but it looks like it's still in discussion and may or may not be standardized.

If the form data is based on a property that is not part of the array element, you could do something with dependencies though. For example:

{
    "type": "object",
    "defintions": {
        "b": {"type": "array", "items": {"type": "string"}}
    },
    "properties": {
        "a": {"type": "string"}  
    },
    "dependencies": {
        "a": {
            "oneOf": [
                {
                    "properties": {
                        "a": {"const": "Option1"},
                        "b": {"$ref": "#/definitions/b", "title": "Title based on Option1"}
                    }
                },
                {
                    "properties": {
                        "a": {"const": "Option2"},
                        "b": {"$ref": "#/definitions/b", "title": "Title based on Option2"}
                    }
                }
            ]
        }
    }
}

2. You can define a custom template for a single array element by using ui:ArrayFieldTemplate as mentioned in https://react-jsonschema-form.readthedocs.io/en/latest/advanced-customization/#array-field-template.

[epicfaace]

Closing this issue, but feel free to reopen it if you have any additional questions!

[vxb1766]

@epicfaace I have a similar issue. how do I add title for array items?
https://codepen.io/veena-balasubramanya-gmail-com/pen/xxPJxoW
When I click plus, I want the title to show as test1, test2, test3