The length of an array in angular-schema-form

The following is my schema structure:

    {
        "type": "object",
        "title": "Review",
        "required": [
            "reviews"
        ],
        "properties": {
            "reviews": {
                "type": "array",
                "items": {
                    "type": "object",
                    "properties": {
                        "user": {
                            "title": "User",
                            "type": "string"
                        },
                        "rating": {
                            "title": "Rating",
                            "type": "number",
                            "minimum": 0,
                            "maximum": 5
                        },
                        "comment": {
                            "title": "Comment",
                            "type": "string",
                            "maxLength": 100
                        }
                    },
                    "required": [
                        "user",
                        "rating",
                        "comment"
                    ]
                }
            }
        }
    }

This schema represents an array of reviews where users can add or remove comments.

I am looking for a way to always render 2 items from the array by default. How should I achieve this?

I attempted using maxItems and minItems, but they do not seem to work as expected in rendering the items.

Answer №1

Currently, there are a couple of methods to achieve this.

One approach is to define them in the default model structure like this:

$scope.model = {
    "comments": [{},{}]
}

Another option is to utilize onChange on the array:

"onChange": function(val) { if(val.length < 2) val.push({}); }

The key distinction between the two is that onChange ensures the minimum length requirement is maintained, whereas the first method only sets the initial default.

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