Interlude.Result.HasKey
In Depth¶
Result.HasKey(result, key)
Whether the form has a field with this name. Useful when a graph reads a form loaded from JSON that it did not build itself.
The inputs are:
result(object) — The values dictionary or the form output of Form.Show.key(string) — The field to look for.
Returns exists — True when the field is present.
Search terms: has, contains, exists, key, field.
About the Result nodes¶
Reading a form's answers.
Every node here accepts either the values dictionary or the form output of Form.Show, so it does not matter which one is to hand. They exist so a graph can say what it expects — a number, a date, a colour — rather than pulling an object out of a dictionary and hoping. Each one takes a fallback used when the field is missing or empty, which is what keeps a downstream node from receiving a null it was not expecting.
Example File¶
An example graph ships beside this page: Interlude.Result.HasKey.dyn
The form it builds:
