How to store an array of nested objects using Sails.js with MongoDB?

Question

I'm trying to save an nested object inside a sails.js model. This is how it looks like:

module.exports = {
  schema: true,
  attributes: {
      label: {
          type: 'string',
          required: true,
      },
      consumption: [{
        timestamp: {
          type: 'string',
          required: true,
        },
        value: {
          type: 'float',
          required: true,
        },
      }],
  }
};

To include the values inside the array I'm doing the following (inside the controller):

if(!plug.consumption)
    plug.consumption = [];

plug.consumption.push({
    timestamp: req.param('timestamp'), /* Format: '2016-04-14T16:18:24.972Z' */
    value: req.param('value'), /* Format: '6.5' */
});

plug.save(function (err){
    if(err){
        res.send("Error");
        return next(err);
    }
});

But when the plug.save is executed, sails breaks and says Error: Unknown rule: 0

I've searched how to store arrays of objects on sails.js but didn't find anything that would work.

Can anyone help?

Thanks

I don't think your syntax used in consumption attribute of your model is supported by Waterline. it looks like a separate model having a One-to-Many relationship. — jelhan
– jelhan, Commented Apr 14, 2016 at 18:08

jelhan · Accepted Answer · 2016-04-14 22:12:20Z

1

You syntax used in consumption is wrong or at least not documented. Waterline supports attribute types json and array as documented but you can't define a schema for them. To define a schema you have to use a One-to-Many relationship between your model and a consumption model.

answered Apr 14, 2016 at 22:12

jelhan

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