mongodb-query

问题 Hi Guys i try to do some email verification after a user suscrib to my api but when i do user.FindOne(token), the user is find but i not able to get the value of the user in the database the return me a big ass array and i don't see wich value to choose. my code: ValidationFunction: const User = require('../models/User'); const Token = require('../models/Token'); module.exports = function (req, res, next) { const headToken = req.header('token'); const token = Token.findOne({ token: headToken

问题 Hi Guys i try to do some email verification after a user suscrib to my api but when i do user.FindOne(token), the user is find but i not able to get the value of the user in the database the return me a big ass array and i don't see wich value to choose. my code: ValidationFunction: const User = require('../models/User'); const Token = require('../models/Token'); module.exports = function (req, res, next) { const headToken = req.header('token'); const token = Token.findOne({ token: headToken

问题 I am using stitch in mongodb. In stitch, i write one nodejs function for increment and decrements purpose. if(changeEvent.fullDocument.type == 'article' || changeEvent.fullDocument.type == 'poll' ) { context.functions.execute("notifyTopic", "article-created", changeEvent.fullDocument); var communities = context.services.get("mongodb-atlas").db("utilo").collection("communities"); communities.updateOne( {_id:changeEvent.fullDocument.community}, {$inc: {"summary.postCount":NumberInt(1)},

问题 I am using stitch in mongodb. In stitch, i write one nodejs function for increment and decrements purpose. if(changeEvent.fullDocument.type == 'article' || changeEvent.fullDocument.type == 'poll' ) { context.functions.execute("notifyTopic", "article-created", changeEvent.fullDocument); var communities = context.services.get("mongodb-atlas").db("utilo").collection("communities"); communities.updateOne( {_id:changeEvent.fullDocument.community}, {$inc: {"summary.postCount":NumberInt(1)},

问题 For CRUD operation with profile image upload, first I create a pyndantic model in models.py as : For adding a new student class StudentSchema(BaseModel): fullname:str = Field(...) email: EmailStr = Field(...) course_of_study: str = Field(...) year: int = Field(...,gt=0,lt=9) gpa: float = Field(..., le= 4.0) image: Optional[str] And for updating in models.py class UpdateStudentModel(BaseModel): fullname: Optional[str] email: Optional[EmailStr] course_of_study : Optional[str] year : Optional

问题 For CRUD operation with profile image upload, first I create a pyndantic model in models.py as : For adding a new student class StudentSchema(BaseModel): fullname:str = Field(...) email: EmailStr = Field(...) course_of_study: str = Field(...) year: int = Field(...,gt=0,lt=9) gpa: float = Field(..., le= 4.0) image: Optional[str] And for updating in models.py class UpdateStudentModel(BaseModel): fullname: Optional[str] email: Optional[EmailStr] course_of_study : Optional[str] year : Optional

问题 I need a way to change the elements of an array field to values of a dict with a single attribute. I don't have to write the result back into my table. I just have to read it that way. My table has rows like this : {a: 1, b:[ {...}, ..., {...} ], c: 2} I need a query that returns each row rewritten like this : {a: 1, b: [ {foo: { ... }}, ..., {foo: {...}} ], c: 2} In other words, each element of b becomes a dict with a single attribute, foo . This feels like a job for $project or $replaceRoot

问题 I need a way to change the elements of an array field to values of a dict with a single attribute. I don't have to write the result back into my table. I just have to read it that way. My table has rows like this : {a: 1, b:[ {...}, ..., {...} ], c: 2} I need a query that returns each row rewritten like this : {a: 1, b: [ {foo: { ... }}, ..., {foo: {...}} ], c: 2} In other words, each element of b becomes a dict with a single attribute, foo . This feels like a job for $project or $replaceRoot

问题 I need a way to change the elements of an array field to values of a dict with a single attribute. I don't have to write the result back into my table. I just have to read it that way. My table has rows like this : {a: 1, b:[ {...}, ..., {...} ], c: 2} I need a query that returns each row rewritten like this : {a: 1, b: [ {foo: { ... }}, ..., {foo: {...}} ], c: 2} In other words, each element of b becomes a dict with a single attribute, foo . This feels like a job for $project or $replaceRoot

问题 db.students.aggregate([ { $unwind: "$details" }, { $group: { _id: { sid: "$details.student._id", statuscode: "$details.studentStatus.statusCode" }, total: { $sum: 1 } } } ]); The query is working fine and need to convert into mongo template . Sample document: { "_id" : 59, "details" : [ { "student" : { "_id" : "5d3145a8523a2e602e5e0200" }, "studentStatus" : { "statusCode" : 1 } } ] } 回答1: The Spring Data MongoTemplate code for the given aggregation is as follows. Note that I have added a