How to show same field based on an or condition on alpaca by binding a field to multiple dependencies - conditional-statements

Question

I am using alpacajs to render an HTML form. My requirement is to show certain fields based on a checkbox. there are three checkboxes in my form and I want to show some fields if any of the checkboxes are checked.
I went through alpaca documentation on conditional dependencies and couldn't find a soution to my problem. I can solve this by creating same fields with different names but that's against dry principle.
My code looks like below.
"myCheckBox1": {
"type": "boolean"
},
"myCheckBox2": {
"type": "boolean"
},
"usernameField": {
"label": "Username *",
"order": 6,
"type": "string"
"disallowOnlyEmptySpaces": true,
"showMessages": false,
"disallowEmptySpaces": true,
}
I want to show usernameField if either of myCheckBox1 or myCheckBox2 is checked. I altered schema to show conditional dependencies.
"dependencies": {
"usernameField": [
"myCheckBox1"
],
"usernameField": [
"myCheckBox2"
]
}
But that consider only last given condition ie, it will display usernameField only if myCheckBox2 is checked and does not consider myCheckBox1. I tried below code also:
"dependencies": {
"usernameField": [
"myCheckBox1", "myCheckBox2"
]
}
But that evaluates to an and condition. Is there a way to show same field using different dependencies?

Answer 1

Why you don't use a group of checkboxes using enum type like the following :
// schema
"check": {
"title": "Select...",
"type": "string",
"enum": ["First", "Second"]
},
...
// options
"check": {
"type": "checkbox"
}
Then you use conditional dependencies like this:
"username": {
"dependencies": {
"check": [
'First', // if First is selected
'Second', // if Second is selected
'First,Second' // if both First and Second are selected
]
}
}
Here's a working fiddle for this.
Please tell me if this isn't what you're looking for.