sails.js Cetak biru kueri menurut relasi

Saya tidak berpikir itu mungkin dengan SailsJS 0.10.5 untuk saat ini. Sebenarnya saya ingin melakukan hal yang sama, jadi saya memutuskan untuk menerapkan hack cepat untuk tujuan ini.

Buka file sails/lib/hooks/blueprints/actionUtil.js , edit metode populateEach seperti di bawah ini:

populateEach: function ( query, req ) {
    var DEFAULT_POPULATE_LIMIT = sails.config.blueprints.defaultLimit || 30;
    var _options = req.options;
    var aliasFilter = req.param('populate');
    var shouldPopulate = _options.populate;

    // Convert the string representation of the filter list to an Array. We
    // need this to provide flexibility in the request param. This way both
    // list string representations are supported:
    //   /model?populate=alias1,alias2,alias3
    //   /model?populate=[alias1,alias2,alias3]
    if (typeof aliasFilter === 'string') {
        aliasFilter = aliasFilter.replace(/\[|\]/g, '');
        aliasFilter = (aliasFilter) ? aliasFilter.split(',') : [];
    }

    return _(_options.associations).reduce(function populateEachAssociation (query, association) {        
        // If an alias filter was provided, override the blueprint config.
        if (aliasFilter) {
            shouldPopulate = _.contains(aliasFilter, association.alias);
        }

        // Only populate associations if a population filter has been supplied
        // with the request or if `populate` is set within the blueprint config.
        // Population filters will override any value stored in the config.
        //
        // Additionally, allow an object to be specified, where the key is the
        // name of the association attribute, and value is true/false
        // (true to populate, false to not)
        if (shouldPopulate) {
            // IMPORTANT NOTE: This is my trick. We should take advanced options from request parameter to make requests even more flexible
            var populationOptions = req.param('populate_' + association.alias);

            if (!populationOptions) {
                var populationLimit = _options['populate_' + association.alias+'_limit'] ||
                                      _options.populate_limit ||
                                      _options.limit ||
                                      DEFAULT_POPULATE_LIMIT;
                populationOptions = {limit: populationLimit};
            }

            return query.populate(association.alias, populationOptions);
        }
        else { 
            return query;
        }
    }, query);
},

Ya! Sekarang API Anda dapat menangani filter asosiasi tambahan seperti di bawah ini:

# POST /api/documents
{
    "where" : {
        // Normal conditions
    }
    "populate_user": {
        // Advanced condition for association 'admin'
        "where" : {
            "role" : {
                 "like": "%Admin%"
            }
        },
        "limit" : 4    
     }
}

Saya harap ini membantu. Omong-omong, saya akan menemukan waktu untuk mengirim permintaan penarikan peningkatan ini ke inti SailsJS besok.

P/S:SailsJS core dibuat dengan cukup baik. Mungkin pembuat inti terlalu sibuk untuk menangani semua permintaan fitur. Mari berkontribusi!