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Mongoose ODM v5.11.15 Documentation
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SchemaType.prototype.unique()

 来源:mongoosejs 浏览 292 扫码 分享 2021-02-07 09:13:40
  • SchemaType.prototype.unique()
    • Parameters
    • Returns:
  • Example:

    SchemaType.prototype.unique()

    Parameters
    • bool «Boolean»
    Returns:
    • «SchemaType» this

    Declares an unique index.

    Example:

    1. const s = new Schema({ name: { type: String, unique: true }});
    2. s.path('name').index({ unique: true });

    NOTE: violating the constraint returns an E11000 error from MongoDB when saving, not a Mongoose validation error.

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        • Currently supported options are
        • Mongoose.prototype.startSession()
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      • Schema
        • Schema()
        • Schema.Types
        • Schema.indexTypes
        • Schema.prototype.add()
        • Schema.prototype.childSchemas
        • Schema.prototype.clone()
        • Schema.prototype.eachPath()
        • Schema.prototype.get()
        • Schema.prototype.index()
        • Schema.prototype.indexes()
        • Schema.prototype.loadClass()
        • Schema.prototype.method()
        • Schema.prototype.obj
        • Schema.prototype.path()
        • Schema.prototype.pathType()
        • Schema.prototype.paths
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        • Schema.prototype.virtual()
        • Schema.prototype.virtualpath()
        • Schema.reserved
      • Connection
        • Connection()
        • Connection.prototype.client
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        • Connection.prototype.plugins
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        • Supported options include
        • Connection.prototype.setClient()
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        • The ChangeStream object is an event emitter that emits the following events
      • Document
        • Document.prototype.$ignore()
        • Document.prototype.$isDefault()
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        • Document.prototype.directModifiedPaths()
        • Document.prototype.equals()
        • Document.prototype.errors
        • Document.prototype.execPopulate()
        • Document.prototype.get()
        • Document.prototype.getChanges()
        • Document.prototype.id
        • Document.prototype.init()
        • Document.prototype.inspect()
        • Document.prototype.invalidate()
        • Document.prototype.isDirectModified()
        • Document.prototype.isDirectSelected()
        • Document.prototype.isInit()
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        • Document.prototype.isNew
        • Document.prototype.isSelected()
        • Document.prototype.markModified()
        • Document.prototype.modifiedPaths()
        • Document.prototype.overwrite()
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        • Document.prototype.replaceOne()
        • Document.prototype.save()
        • Document.prototype.schema
        • Document.prototype.set()
        • Document.prototype.toJSON()
        • Note that this is behavior is different for transforms defined in the schema
        • Document.prototype.toString()
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        • Document.prototype.updateOne()
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        • Document.prototype.validateSync()
      • Model
        • Model()
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        • Model.inspect()
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        • Model.prototype.$where
        • Model.prototype.$where()
        • Model.prototype.base
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        • Model.prototype.discriminators
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        • The ChangeStream object is an event emitter that emits the following events
        • Model.where()
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      • Query
        • Query()
        • Query.prototype.$where()
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        • Query.prototype.center()
        • Query.prototype.centerSphere()
        • Query.prototype.circle()
        • Query.prototype.collation()
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        • Query.prototype.count()
        • Query.prototype.countDocuments()
        • Query.prototype.cursor()
        • Query.prototype.deleteMany()
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        • Query.prototype.elemMatch()
        • Query.prototype.equals()
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        • Query.prototype.exists()
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        • Query.prototype.find()
        • Query.prototype.findOne()
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        • Query.prototype.findOneAndRemove()
        • Query.prototype.findOneAndReplace()
        • Query.prototype.findOneAndUpdate()
        • Query.prototype.geometry()
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        • Query.prototype.in()
        • Query.prototype.intersects()
        • This option is only valid for operations that write to the database
        • Query.prototype.lean()
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        • Query.prototype.merge()
        • Query.prototype.mod()
        • Query.prototype.mongooseOptions()
        • Query.prototype.ne()
        • Query.prototype.near()
        • Query.prototype.nearSphere()
        • Query.prototype.nin()
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        • Query.prototype.or()
        • Query.prototype.orFail()
        • Query.prototype.polygon()
        • Query.prototype.populate()
        • Query.prototype.projection()
        • Query.prototype.read()
        • Query.prototype.readConcern()
        • Query.prototype.regex()
        • Query.prototype.remove()
        • Query.prototype.replaceOne()
        • Query.prototype.select()
        • Query.prototype.selected()
        • Query.prototype.selectedExclusively()
        • Query.prototype.selectedInclusively()
        • Query.prototype.session()
        • Query.prototype.set()
        • The following options are for all operations
        • Query.prototype.setQuery()
        • Query.prototype.setUpdate()
        • Query.prototype.size()
        • Query.prototype.skip()
        • Query.prototype.slaveOk()
        • Query.prototype.slice()
        • Query.prototype.snapshot()
        • Query.prototype.sort()
        • Query.prototype.tailable()
        • Query.prototype.then()
        • Query.prototype.toConstructor()
        • Query.prototype.update()
        • Query.prototype.updateMany()
        • Query.prototype.updateOne()
        • Query.prototype.use$geoWithin
        • This option is only valid for operations that write to the database
        • Query.prototype.where()
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        • This option is only valid for operations that write to the database
      • QueryCursor
      • Aggregate
        • Aggregate()
        • Aggregate.prototype.Symbol.asyncIterator()
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        • Aggregate.prototype.count()
        • Aggregate.prototype.cursor()
        • Aggregate.prototype.exec()
        • Aggregate.prototype.explain()
        • Aggregate.prototype.facet()
        • Aggregate.prototype.graphLookup()
        • Aggregate.prototype.group()
        • Aggregate.prototype.hint()
        • Aggregate.prototype.limit()
        • Aggregate.prototype.lookup()
        • Aggregate.prototype.match()
        • Aggregate.prototype.model()
        • Aggregate.prototype.near()
        • Aggregate.prototype.option()
        • Supported options are
        • Aggregate.prototype.pipeline()
        • Aggregate.prototype.project()
        • Aggregate.prototype.read()
        • Aggregate.prototype.readConcern()
        • Aggregate.prototype.redact()
        • Aggregate.prototype.replaceRoot()
        • Aggregate.prototype.sample()
        • Aggregate.prototype.search()
        • Aggregate.prototype.session()
        • Aggregate.prototype.skip()
        • Aggregate.prototype.sort()
        • Aggregate.prototype.sortByCount()
        • Aggregate.prototype.then()
        • Aggregate.prototype.unwind()
      • AggregationCursor
      • Schematype
        • SchemaType()
        • SchemaType.cast()
        • SchemaType.cast()
        • SchemaType.checkRequired()
        • SchemaType.get()
        • SchemaType.prototype.default()
        • SchemaType.prototype.get()
        • SchemaType.prototype.immutable()
        • SchemaType.prototype.index()
        • SchemaType.prototype.ref()
        • SchemaType.prototype.required()
        • SchemaType.prototype.select()
        • SchemaType.prototype.set()
        • SchemaType.prototype.sparse()
        • SchemaType.prototype.text()
        • Example:
        • SchemaType.prototype.transform()
        • SchemaType.prototype.unique()
        • SchemaType.prototype.validate()
        • SchemaType.set()
      • Virtualtype
      • Error
      • Array
      • DocumentArrayPath
      • SingleNestedPath
    • Version Compatibility
    • FAQ
    • Further Reading
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