CODEWITHSUNDEEP
node.jsmongodbmongoose
Jaseem Abbas
Jaseem Abbas

Reputation: 5230

How to restrict values using Mixed data type in Mongoose?

I am using mongoose.js with node.js. I have a mongoose schema as shown below. 

myModel: {
     type: Schema.Types.Mixed,
}

I want to restrict the values in the schema to predefined values of type String where as my keys should be dynamic.

For example,

 myModel: {
     "Dynamic Key 1" : "Restricted value 1",
     "Dynamic Key 2" : "Restricted value 2",
     "Dynamic Key 3" : "Restricted value 3"
 }

where my values must accept Restricted value 1, Restricted value 2 and Restricted value 3 only allowing keys to accept anything without any restrictions.

Is Schema.Types.Mixed the right type to be used here? If not, what is the best approach?

Upvotes: 1

Views: 692

Answers (1)

JohnnyHK
JohnnyHK

Reputation: 311835

It's best to avoid dynamic keys if possible as they make everything harder. Instead of using Mixed, give the field more structure by making myModel an array that contains a dynamic key value and a string value field that's validated using enum:

myModel: [{
    key: String,
    value: {
        type: String, 
        enum: ['Restricted value 1', 'Restricted value 2', 'Restricted value 3']
    }
}]

Your example doc would become:

myModel: [
    { key: "Dynamic Key 1", value: "Restricted value 1" },
    { key: "Dynamic Key 2", value: "Restricted value 2" },
    { key: "Dynamic Key 3", value: "Restricted value 3" }
]

Upvotes: 4

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