问题
I am trying to create a complex schema that will check for the value of a property and then validate according to the value of that same property. I am wondering if it's possible to use $ref and allOf in the same schema and if so, how? I am having some trouble getting this to work. It may be important to note that I am using AJV. Please see my code below
{
"$ref": "#/definitions/Welcome",
"definitions": {
"Welcome": {
"properties": {
"auth": {
"type": "string",
"enum": ["oauth1","oauth2"]
},
"environment": {
"$ref": "#/definitions/Environment"
}
}
},
"Environment": {
"properties": {
"dev": {
"type": "object"
}
}
},
"Oauth1": {
"type": "object",
"properties": {
"temporary_credentials": {
"type": "string"
}
}
},
"Oauth2": {
"type": "object",
"properties": {
"auth_url": {
"type": "string"
}
}
}
},
"allOf": [
{
"if": {
"auth": {
"const": "oauth1"
}
},
"then": {
"environment": {
"dev": {
"$ref": "#/definitions/Oauth1
}
}
}
},
{
"if": {
"auth": {
"const": "oauth2"
}
},
"then": {
"environment": {
"dev": {
"$ref": "#/definitions/Oauth2
}
}
}
}
]
}
A sample json input to be validated against this schema would be something like this
{
"auth": "oauth1",
"environment": {
"dev": {
"temporary_credentials": "xyzzy"
}
}
}
I feel like there might be an error in my "then" statements or simply the placement of the allOf. The error I would get is something like this "$ref: keywords ignored in schema at path "#"".
回答1:
In schema version up to and including draft7, once you use "$ref"
, all other keywords in that level of the schema are ignored. That's what the error is telling you: because you used $ref
, other keywords are ignored.
If you only want to use a $ref
at the root level, the trick is to wrap it in an "allOf"
.
But since you already have an allOf
at the root level, you can just add the $ref
as another branch of the allOf
and it will work.
That would look like:
"allOf": [
{
"$ref": "#/definitions/Welcome",
},
{
"if": {
"auth": {
"const": "oauth1"
}
etc.
Note: in the schema you posted, you have two unclosed strings "#/definitions/Oauth1
and "#/definitions/Oauth2
. If you had that in your real schema it would be invalid JSON.
来源:https://stackoverflow.com/questions/55597775/is-it-possible-to-create-a-json-schema-with-allof-multiple-if-and-then-and-re