dynamic query approach for MongoDB with Express and NodeJs

Currently, I am developing an API using MongoDB, Express, and Node.js. So far, my progress has been good as I am able to query for a single record by ID, search for a specific field, delete, add, and more.

However, I am now in search of a method that can create a generic query for mongoDB. This method should accept a JSON representation of the model with some data to search for. If a field is not specified in the JSON object, then it should only search on those fields that are specified.

I have included some boilerplate code below that I have already created. I am relatively new to JavaScript and Node.js, so I believe I may need to parse or sanitize the query object before executing the .find method.

In essence, I want to execute a query similar to how it is done in parse.com, where you provide an object model with the data to search for and receive all matching results.

Any assistance on this matter would be extremely helpful!

--The following code is located in my custom module--

exports.findByQuery = function(req, res) {
    var query = req.query;
    db.collection('artists', function(err, collection) {
            collection.find(query).toArray(function(err, docs) {
            res.send(docs);
        });
    });
};

--This is the routes file--

var express = require('express'),
    artist = require('./routes/artists');

var app = express();

app.configure(function () {
    app.use(express.logger('dev'));     /* 'default', 'short', 'tiny', 'dev' */
    app.use(express.bodyParser());
});

app.get('/search/', artist.findByQuery);
app.get('/artist/:id', artist.findById);
app.post('/artist', artist.addArtist);
app.put('/artist/:id', artist.updateArtist);
app.delete('/artist/:id', artist.deleteArtist);

app.listen(3000);

Answer №1

After some testing, I discovered that the code mentioned does function properly. It seems that searching for _id specifically may not work for some reason. Nonetheless, searching for any other field will yield results. I am currently exploring methods to include _id in the search functionality.

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