What is the best way to add a new project and make updates to an existing project within an array?

Looking to add a new project and update existing projects within an array.

Here's my plan in pseudo-JSON format.

How can I update Project A in MongoDB?

{
  _id : ...,
  userName: milad ,
  projets : [
    { .. projectId, pName, location .... A },
    { .. projectId, pName, location .... B },
    { .. projectId, pName, location .... C },
  ]
}

What is the process for inserting Project D in MongoDB?

 {
      _id : ...,
      userName: milad ,
      projets : [
        { .. projectId, pName, location .... A },
        { .. projectId, pName, location .... B },
        { .. projectId, pName, location .... C },
        { .. projectId, pName, location .... D },
      ]
    }
javascriptmongodbmongoosemongodb-query

Answer №1

When performing an update with findOneAndUpdate(), remember to utilize the $push operation for inserting new documents.

db1.findOneAndUpdate({ _id: 1 }, { $push: { projects: {name:"new project" }} });

If you need to update a specific element within an array, use the following syntax:

db1.findOneAndUpdate({ id: 1, "projects.projectid": 2 }, { $set: { "projects.$.name": "updated name" } });

Answer №2


const addNewProject = async (newProj, _id) {
  
  let existingProjObj = await Project.findOne({_id});

  let updatedProjArr = [...existingProjObj.projects, newProj];

  let updatedProj = await Project.findOneAndUpdate({_id,{projects:updatedProjArr});
}

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