How to write complex conditional validation in JSON schema? - json

Question

Below is the sample JSON schema.
I need to implement this validation -
If property1 has a value of "abc" and property2 has "abc111" in the list of provided values, then subProperty1 is mandatory inside property3
{
"type": "object",
"additionalProperties": false,
"properties": {
"property1": {
"type": "string"
},
"property2": {
"type": "array",
"items": {
"type": "string"
}
},
"property3": {
"type": "object",
"properties": {
"subProperty1": {
...
},
"subProperty2": {
...
},
}
}
}
}
I tried to implement it using this JSON -
"if": {
"properties": {
"property1": {
"const": "abc"
},
"property2": {
"contains": {
"properties": {
"items": {
"const": "abc111"
}
}
}
}
}
},
"then": {
"dependentSchemas": {
"property1": {
"required": [ "property3" ],
"message": "Error - Missing property3 with subProperty1",
"properties": {
"property3": {
"required": [ "subProperty1" ]
}
}
}
}
}
But this doesnt work as expected. Could someone please help me fix the conditional logic?

Answer 1

It's hard to say without knowing in what way things aren't working as expected. But you may be missing a required keyword in your if clause -- in order to ensure that property1 really is present. (The properties keyword evaluates to true if the property isn't present at all.) Then you would also need a required: ["property3"] in your then clause.
Also, you don't need dependentSchemas at all -- you are adding a dependency on property1, but that's already in the if clause so it's redundant.