for example const ProjectSchema = new mongoose.Schema ({) name : { type:String }, time : { type:Date, default:Date.now }, url : { type: String}, user : { type: Object}, proId : {type: String}, spaceId : {type: String}, description: {type: String...
exports.getAllStudent = function (req, res) { var rows = url.parse(req.url, true).query.rows; var page = url.parse(req.url, true).query.page; var sidx = url.parse(req.url, true).query.sidx; var sord = url.parse(req.url, true).query....
Room schema var Room = new Schema({ title: String, author: String, body: String, owners: [ { type: ObjectId, ref: User , index: true } ] }) Room.find({ owners: user }) first question: why can the query here be written this way? How...
1. A user created in the admin database in MongoDB that is used to connect to another database myBase; 2. Use mongoose to connect to MongoDB, when the connection address is mongodb: username:password@my-server myBase?authSource=admin 3. Unable ...
new Schema({ pid: {type: String, ref: product }, sid: {type: String, ref: sale }, })); suppose there are product and sale two collections pid and sid both specify user_id of the product and sale collections instead of _ id ...
Schema: the update I want to implement is to store the same carId, for the stopName in the stops array. How should I implement such batch updates in mongoose? Common Update on the Internet is for a single field, did not encounter such a case, please ...
:projectDao.js var mongoose = require( mongoose ) const Project = mongoose.model( Project ) exports.createProject = async(data) => { data.m.projectModelId=data.m.projectModel.split( , )[0] data.m.projectModelName=data.m.projectModel.spli...
2018-06-01T21:50:27.381+1000 I STORAGE [initandlisten] WiredTiger message [1527853827:381260][6025:0x7fffb1251380], txn-recover: Recovering log 88 through 89 2018-06-01T21:50:27.448+1000 I STORAGE [initandlisten] WiredTiger message [1527853827:448472][...
PageTagMapModel.getPageTagMapNum ({tag: single._id, status: normal }) returns the page_num found by the mongoose query, but if three lines of comments are used in the code, there is no page_num attribute in the resulting data. You can use = to assig...
The structure is shown in the figure. Steps is an array. Now you want to modify the count value of a specified date. ...
for example, if there is a relationship between an article and a tag, an article (page) has multiple tags (tag), and a tag (tag) can be shared by multiple article (page) < H2 > get the page list, hope to get the corresponding tag, then get the tag list...
the local startup project reported an error, the same code configuration, but there is no problem with others. solve the reason, { "exception ": "com.mongodb.MongoSocketWriteException: Exception sending messagerntat com.mongodb.connection.Interna...
function to be realized: 1. When the user clicks "join the shopping cart " in the interface, the front end will give a productId to the background, and the background will query the corresponding product information in the database according to the pr...
the domain.js code is as follows var mongoose = require( mongoose ) var moment = require( moment ) var Schema = mongoose.Schema function dateformat(val) { console.log( dateformat + val); return moment(val).format( YYYY-MM-DD ); } va...
the model is designed as follows const RegistrationSheet = mongoose.model( RegistrationSheet , new Schema({ doctorId: String, today: { time: String, date: { morning: [ { number:Number, patient: ...
my mongodb is a MMAPv1 engine, how to view and set lock granularity? ...
const UserSchema = new Schema({ userId:Schema.Types.ObjectId, username: String, mobile: String, password: String, remarks: String, createAt: {type: Date, default: Date.now}, updateAt: {type: Date, default: Date.now}, ...
< H2 > question < H2 > when find () is used in findAddUsers.js , the data can be read normally, but there is no data in return < H2 > Code < H2 > findAddUsers.js const mongoose = require( mongoose ) let Schema = mongoose.Schema let UserSchem...
createdTime: {type: Date, required: true, default: Date.now}, +30 endTime: {type: Date, required: true, default: Date.now + } how to implement Date.now + for half an hour ...
first of all, I have a club community table (collection); then I want to find the community with the Chinese character in its name according to the fuzzy search of the input Chinese character. For example: societies are: "Tianyue run " and "Tianyue V...
when using MySQL, such as connecting to MySQL, with Django, a new field is added to model. As long as you do migration, on the command line, this field will be added to all previous records, but how to do it in MongoDB? Nodejs as a backend, does it have...
I know that there is an InvalidateRect setting area in onpaint, but if you can only draw on CClientDC directly when clicking on the function, how to set the drawing update area ...
const [newLabelName, setNewLabelName] = useState ( ); const Search = () = > { return( <div className={styles.searchWrapper}> <Input placeholder="" > <Icon onClick={addItem} className={styles.addIcon} type="p...
1. The code is as follows renderContent(h, { node, data, store }) { return ( <span class="custom-tree-node"> <span class="iconfont icon-wenjianjia">< span> ...
how do I get the uploaded file object ?...