getting schema attributes from Mongoose Model
Solution 1
Yes, it is possible.
Each schema has a paths
property, that looks somewhat like this (this is an example of my code):
paths: {
number: [Object],
'name.first': [Object],
'name.last': [Object],
ssn: [Object],
birthday: [Object],
'job.company': [Object],
'job.position': [Object],
'address.city': [Object],
'address.state': [Object],
'address.country': [Object],
'address.street': [Object],
'address.number': [Object],
'address.zip': [Object],
email: [Object],
phones: [Object],
tags: [Object],
createdBy: [Object],
createdAt: [Object],
updatedBy: [Object],
updatedAt: [Object],
meta: [Object],
_id: [Object],
__v: [Object]
}
You can access this through an model too. It's under Model.schema.paths
.
Solution 2
Don't have enough rep to comment, but this also spits out a list and loops through all of the schema types.
mySchema.schema.eachPath(function(path) {
console.log(path);
});
should print out:
number
name.first
name.last
ssn
birthday
job.company
job.position
address.city
address.state
address.country
address.street
address.number
address.zip
email
phones
tags
createdBy
createdAt
updatedBy
updatedAt
meta
_id
__v
Or you could get all Attributes as an Array like this:
var props = Object.keys(mySchema.schema.paths);
Solution 3
My solution uses mongoose model.
Schema attributes
const schema = {
email: {
type: String,
required: 'email is required',
},
password: {
type: String,
required: 'password is required',
},
};
Schema
const FooSchema = new Schema(schema);
Model
const FooModel = model('Foo', FooSchema);
Get attributes from model:
Object.keys(FooModel.schema.tree)
Result:
[
'email',
'password',
'_id',
'__v'
]
Solution 4
Solution for lodash, function which picked all schema properties, excluding specified
_.mixin({ pickSchema: function (model, excluded) {
var fields = [];
model.schema.eachPath(function (path) {
_.isArray(excluded) ? excluded.indexOf(path) < 0 ? fields.push(path) : false : path === excluded ? false : fields.push(path);
});
return fields;
}
});
_.pickSchema(User, '_id'); // will return all fields except _id
_.pick(req.body, _.pickSchema(User, ['_id', 'createdAt', 'hidden'])) // all except specified properties
read more here https://gist.github.com/styopdev/95f3fed98ce3ebaedf5c
Solution 5
If you want to have only the attributes you added and not the add methods by the ORM that starts with '$___', you have to turn the document into object then access the attributes like this:
Object.keys(document.toObject());
user1460015
Updated on July 08, 2022Comments
-
user1460015 almost 2 years
I'm using Mongoose.js to create models with schemas.
I have a list of models (many) and at times I'd like to get the attributes/keys that make up a particular model.
Is there a method to pull out the attribute schemas for any given model?
For example,
var mySchema = module.exports = new Schema({ SID: { type: Schema.Types.ObjectId //, required: true }, teams: { type: [String] }, hats: [{ val: String, dt: Date }], shields: [{ val: String, dt: Date }], shoes: [{ val: String, dt: Date }] }
);
Is it possible to pull out/identify the attributes of the schema
[SID, hats, teams, shields, shoes]
?? -
user1460015 about 11 yearscould you provide a resource?
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gustavohenke about 11 yearsI dont't understand. Do you want links?
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user1460015 almost 11 yearssure... just something that I can reference in the future instead of asking questions here.
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sinθ over 10 yearsIs there a way to get this from a database object if you don't know the schema?
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gustavohenke over 10 yearsMaybe try iterating thru the registered models with
modelNames()
, then you retrieve the models and their paths the same way. -
Saksham Khurana about 6 yearsTo add in to the answer , if you have created a Schema named Temp then you can access the object using Temp.paths
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Predrag Stojadinović almost 3 yearsThe tree attribute is better than paths because it includes virtuals.