感謝大家一直支持讓這個難題的第一步特別是@GaëtanRouziès和@Neil解決。在此thread上,代碼完美適用於有問題的場景。我想調整相同的代碼來處理另一個類似的場景,但我還沒有弄清楚可能會出現什麼問題。這一次,我有一個coursemodule
集合,這是課程和模塊之間的許多關係集合,它們只存儲coursesId
和moduleId
。由於代碼非常完美,我簡單地複製,做了一點修改,並得出了下面的代碼:做1:很多:許多人加入mongodb
courses(){
var theslug = FlowRouter.getParam('myslug');
var mySchoolDocs = SchoolDb.findOne({slug: theslug});
var arrayModuleSchools = ModuleSchool.find({schoolId: mySchoolDocs._id});
// Transform the array of document into an array with only the ids
var arrayModuleId = [];
arrayModuleSchools.forEach(function(moduleSchools){
arrayModuleId.push(moduleSchools.moduleId);
});
var coursetoMod = CourseModules.find({}, {moduleId: {$in: arrayModuleId}});
if (coursetoMod) {
coursesArrayIds = [];
console.log(coursetoSchool);
coursetoMod.forEach(function (courseToModules) {
coursesArrayIds.push(courseToModules.coursesId);
});
return Courses.find({_id: {$in: coursesArrayIds}}).fetch();
}
}
具體而言,在Modules
集合中只存在2個模塊,與IDS - xfLM9DEzhCMYQpQ32 and PTbZQ9cTG9pByFsY2
。該CourseModule收藏有這有文檔:
{
"_id" : "iXX4unJZRNcCw9bAm",
"moduleId" : "PTbZQ9cTG9pByFsY2",
"coursesId" : "FbgcdZxADHKRBj98z",
"createdAt" : ISODate("2017-08-25T16:36:17.173Z"),
"userId" : "n5rqFSHbhm7zqADyB"
}
{
"_id" : "RAJJFjqAjGoDeNhko",
"moduleId" : "PTbZQ9cTG9pByFsY2",
"coursesId" : "ESAf6NGpZzXeioecp",
"createdAt" : ISODate("2017-08-25T16:36:17.182Z"),
"userId" : "n5rqFSHbhm7zqADyB"
}
{
"_id" : "8ceuFwZK8Qduo5J5P",
"moduleId" : "xfLM9DEzhCMYQpQ32",
"coursesId" : "KnNj4GLcyMtvF8JmB",
"createdAt" : ISODate("2017-08-25T16:38:15.368Z"),
"userId" : "n5rqFSHbhm7zqADyB"
}
點在哪裏我登錄到我的selectorId
未定義控制檯:
1 ... n.Cursor {集合:LocalCollection,分揀機:空,匹配: 中號... o.Matcher,_selectorId:未定義,跳過:未定義...} _projectionFn: (OBJ)_selectorId:undefined_transform:nullcollection: LocalCollectionfields:undefinedlimit:undefinedmatcher: Minimongo.Matcherreactive:trueskip:undefinedsorter:null__proto__: Object_depend:(changers,_allow_unordered)_getCollectionName: ()_getRawObjects :(選項)_publishCursor:(子)構造函數: count :()fetch :()forEach :(callback, thisArg)getTransform :()map:(callback,thisArg)觀察: (options)observeChanges:(options)rewind :()proto:Object view.js:30 L ... n.Cursor {collection:LocalCollection,sorter:null, Matcher:M ... o.Matcher,_selectorId:undefined,skip:undefined ...}
我想要做的就是獲取當前通過模塊顯示的特定學校附加的課程。
哪個控制檯產生的錯誤信息?鉻調試器控制檯?或者「流星蒙哥」控制檯?或者'流星'服務器控制檯? –