CODEWITHSUNDEEP
javascriptnode.jsmongodbmongooserequest
whitehander
whitehander

Reputation: 27

Strategy of reusing mongoose models

I using mongoose with express.js

I designed server is create model dynamically.

var schema = mongoose.Schema({ data: String }, { timestamps: true });

var model = mongoose.model(result.siteId, schema);

    var data = new model({
        data: JSON.stringify(req.body)
    });

    data.save(function (err, result) {
        if (err) {
            res.status(400).json({
                success: false
            });
        } else {
            res.status(200).json({
                success: true,
                data: result
            });
        }
    });

this is this part of create models. (data input part) Once server get request, request's siteId is model's name. It is properly works. but problem is using this created model. I want this mongodb table. So i redeclare models but it not works.

var datas = mongoose.model('modelname', {data: String});

Once declare this model. 'data input part' (upper code) is not working and stopped server response and timeout message. but other 'data input part' using another modelname is working.

i think mongoose stopped from redeclare model. I want declare models other js file and use. but modelsname is must dynamic name.

What is proper way?

Upvotes: 0

Views: 759

Answers (1)

Felipe Sabino
Felipe Sabino

Reputation: 18225

Had a similar problem trying to reuse Schemas with different names and only managed to get it working by providing the collection name to Schema creation as well.

You can accomplish something similar by adding the collection param to your Schema creation options.

But then you need different Schema objects for each model, so I suggest creating a function to retrieve models, based on a collection name, like

var buildModel = function(collectionName) {

  var schema = mongoose.Schema({ data: String }, { timestamps: true, collection: collectionName });

  return mongoose.model(collectionName, schema);
}

var model = buildModel(result.siteId);

var data = new model({
   ...

Upvotes: 1

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