标签:meteor meteor-collection2 simple-schema javascript
在我的libs文件夹中,我使用SimpleSchema创建集合.我想通过autoValue将Meteor.userId添加到某些字段,如下所示:
Collection = new Meteor.Collection('collection');
Collection.attachSchema(new SimpleSchema({
createdByUser: {
type: String,
max: 20,
autoValue: function() {
return Meteor.userId();
}
}
});
但是,在执行此操作时,出现以下错误:
Error: Meteor.userId can only be invoked in method calls. Use this.userId in publish functions.
我也尝试过这个:
var userIdentification = Meteor.userId();
Collection = new Meteor.Collection('collection');
Collection.attachSchema(new SimpleSchema({
createdByUser: {
type: String,
max: 20,
autoValue: function() {
return userIdentification;
}
}
});
但这会使我的应用程序崩溃:
=> Exited with code: 8
=> Your application is crashing. Waiting for file change.
有任何想法吗?
解决方法:
通过此将userId信息提供给autoValue
by collection2
The autoValue option is provided by the SimpleSchema package and is documented there. Collection2 adds the following properties to this for any autoValue function that is called as part of a C2 database operation:
- isInsert: True if it’s an insert operation
- isUpdate: True if it’s an update operation
- isUpsert: True if it’s an upsert operation (either upsert() or upsert: true)
- userId: The ID of the currently logged in user. (Always null for server-initiated actions.)
因此,您的代码应为:
Collection = new Meteor.Collection('collection');
Collection.attachSchema(new SimpleSchema({
createdByUser: {
type: String,
max: 20,
autoValue: function() {
return this.userId;
}
}
});
标签:meteor,meteor-collection2,simple-schema,javascript 来源: https://codeday.me/bug/20191119/2036665.html
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