Multiple model updates in sails waterline

问题

I'm building a project on sails (0.10.0-rc5) for a few days and in a few cases i need to update multiple entries at once with the same data so I made something up ...

Servers.find({owner_id: anonymous_user.id}).exec(function(error, servers) {

  catches.error(error);
  queries.save_each(servers, {owner_id: user.id});

});

The interesting part is queries.save_each() which I created ...

/**
 * Save each ActiveRecord objects with the desired attributes
 * @param  {object} objects ActiveRecord object (e.g. servers, users)
 * @param  {object} updates datas to update
 * @return {void}
 */
save_each  = function(objects, updates) {

// For each object we will update the wanted datas
for (var n in objects) {

    objects[n] = variables.inject(objects[n], updates);
    objects[n].save(function(error) { 

        catches.error(error);

     });

}

}

Basically, it's checking each entry and updating it from the new datas with save(). It works fine, but i'm wondering if there's nothing already done in waterline to do so ; I didn't find anything, but i'm quite beginner in sails maybe i missed something !

Any idea ?

回答1:

For the record, to update records in Sails, use the update method:

Model.update(criteria, data).exec(callback);

for example:

Servers.update({owner_id: anonymous_user.id}, {owner_id: user.id})
       .exec(function(err, updatedServers) {
                 // do something
             });

Documentation for update is on the here.

回答2:

This worked for me:

Here we have a set of Photos, which we want to update.

var photos= [1,2,5]; //update the status of these 3 photos at once!
var values = {status:"accepted"};

Photo.update(photos,values).exec(function afterwards(err, updated){

       if (err) {
                res.json(err)
                return;
       }
       res.json({err:"Everything worked"})
 });

来源：https://stackoverflow.com/questions/23312002/multiple-model-updates-in-sails-waterline

标签

node.js

sails.js

waterline