mongodb

问题 I have been trying to read the documentation for GridFS and MongoDB for awhile. They just keep repeating the same thing and I can't make sense of it. Desired Output: The user submits a form that form contains many fields, but one is an image. The request needs to store the data in a collection and make a new document, which can be retrieved later. My main question is how do I use GridFS in this situation to store an image in that document. It says GridFS makes two collections in my database

问题 I have been trying to read the documentation for GridFS and MongoDB for awhile. They just keep repeating the same thing and I can't make sense of it. Desired Output: The user submits a form that form contains many fields, but one is an image. The request needs to store the data in a collection and make a new document, which can be retrieved later. My main question is how do I use GridFS in this situation to store an image in that document. It says GridFS makes two collections in my database

问题 I'm having this form with this validator for uniqueness: class CreateTypeForm(FlaskForm): type_name = StringField("Type", validators=[DataRequired()]) description = TextAreaField("Description") submit = SubmitField("Create") def validate_type_name(self, type_name): typeName = mongo.db.types.find_one({"type_name": type_name.data}) if typeName: raise ValidationError("The type already exists.") But need to alter the validator for the form I have when I edit my type : class EditTypeForm(FlaskForm

问题 I'm having this form with this validator for uniqueness: class CreateTypeForm(FlaskForm): type_name = StringField("Type", validators=[DataRequired()]) description = TextAreaField("Description") submit = SubmitField("Create") def validate_type_name(self, type_name): typeName = mongo.db.types.find_one({"type_name": type_name.data}) if typeName: raise ValidationError("The type already exists.") But need to alter the validator for the form I have when I edit my type : class EditTypeForm(FlaskForm

问题 im trying to connect to a mongodb container, but it does not work, does not recognize the host. this is my docker-compose.yml file with the service: version: '3' services: mongodb: build: context: . dockerfile: docker/mongodb/Dockerfile restart: always environment: DATABASE: database USERNAME: user PASSWORD: pass ports: - '5100:27017' volumes: - ./data/db:/data/db This is my dockerfile for mongodb: FROM mvertes/alpine-mongo:4.0.5-0 ENV MONGO_INITDB_DATABASE: ${DATABASE} ENV MONGO_INITDB_ROOT

问题 I want to add an additional key number which holds a value of the auto-incrementing number. How can I achieve this? Below is the query. Is it possible to achieve this result without doing unwind and group? [ { "$match":{ "iContestId":"5e4118161a7b5765ee9b40ef" } }, { "$project":{ "_id":"$_id", "nPointsEarned":"$nPointsEarned", "iContestId":"$iContestId", "iUserId":"$iUserId", "ranking":"$ranking", "sFullName":"$sFullName", "sProfilePicture":"$sImage", "nAutoIncrement": { "$count": { "$sum": 1

问题 I want to add an additional key number which holds a value of the auto-incrementing number. How can I achieve this? Below is the query. Is it possible to achieve this result without doing unwind and group? [ { "$match":{ "iContestId":"5e4118161a7b5765ee9b40ef" } }, { "$project":{ "_id":"$_id", "nPointsEarned":"$nPointsEarned", "iContestId":"$iContestId", "iUserId":"$iUserId", "ranking":"$ranking", "sFullName":"$sFullName", "sProfilePicture":"$sImage", "nAutoIncrement": { "$count": { "$sum": 1

问题 I am new to Golang and Graphql so I probably messed a lot of the configuration up but I am struggling to get values returned from my database using the GraphQL API I created. Whenever I query my database using the GraphQL API I created in Golang It throws the error cannot decode UTC datetime into a string type and struggles to get the id out. Here is my GrapqhQL schema: type User { _id: ID! username: String! passwordHash: String! email: String! userInfo: userStats profileStats: profileInfo }

问题 I am watching a tutorial on how to create Go restful APIs that use MongoDB for persistence (this one to be more precise). The instructor is using in his model (struct) both json and bson tags, something like type NoteUpdate struct { ID string `json:"id,omitempty" bson:"_id,omitempty"` Title string `json:"title" bson:"title,omitempty"` Content string `json:"content" bson:"content,omitempty"` ChangedAt int64 `json:"changed_at" bson:"changed_at"` } However the official go driver example does not

问题 I am watching a tutorial on how to create Go restful APIs that use MongoDB for persistence (this one to be more precise). The instructor is using in his model (struct) both json and bson tags, something like type NoteUpdate struct { ID string `json:"id,omitempty" bson:"_id,omitempty"` Title string `json:"title" bson:"title,omitempty"` Content string `json:"content" bson:"content,omitempty"` ChangedAt int64 `json:"changed_at" bson:"changed_at"` } However the official go driver example does not