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| /**
* Module Dependencies
*/
var async = require('async');
var _ = require('lodash');
var usageError = require('../../utils/usageError');
var utils = require('../../utils/helpers');
var normalize = require('../../utils/normalize');
var Deferred = require('../deferred');
var callbacks = require('../../utils/callbacksRunner');
var nestedOperations = require('../../utils/nestedOperations');
var hop = utils.object.hasOwnProperty;
/**
* Update all records matching criteria
*
* @param {Object} criteria
* @param {Object} values
* @param {Function} cb
* @return Deferred object if no callback
*/
module.exports = function(criteria, values, cb, metaContainer) {
var self = this;
Iif (typeof criteria === 'function') {
cb = criteria;
criteria = null;
}
// Return Deferred or pass to adapter
if (typeof cb !== 'function') {
return new Deferred(this, this.update, criteria, values);
}
// If there was something defined in the criteria that would return no results, don't even
// run the query and just return an empty result set.
Iif (criteria === false) {
return cb(null, []);
}
// Ensure proper function signature
var usage = utils.capitalize(this.identity) + '.update(criteria, values, callback)';
Iif (!values) return usageError('No updated values specified!', usage, cb);
// Format Criteria and Values
var valuesObject = prepareArguments.call(this, criteria, values);
// Create any of the belongsTo associations and set the foreign key values
createBelongsTo.call(this, valuesObject, function(err) {
Iif (err) return cb(err);
beforeCallbacks.call(self, valuesObject.values, function(err) {
Iif (err) return cb(err);
updateRecords.call(self, valuesObject, cb, metaContainer);
});
}, metaContainer);
};
/**
* Prepare Arguments
*
* @param {Object} criteria
* @param {Object} values
* @return {Object}
*/
function prepareArguments(criteria, values) {
// Check if options is an integer or string and normalize criteria
// to object, using the specified primary key field.
criteria = normalize.expandPK(this, criteria);
// Normalize criteria
criteria = normalize.criteria(criteria);
// Pull out any associations in the values
var associations = nestedOperations.valuesParser.call(this, this.identity, this.offshore.schema, values);
// Replace associated models with their foreign key values if available.
// Unless the association has a custom primary key (we want to create the object)
values = nestedOperations.reduceAssociations.call(this, this.identity, this.offshore.schema, values, 'update');
// Cast values to proper types (handle numbers as strings)
values = this._cast.run(values);
return {
criteria: criteria,
values: values,
associations: associations
};
}
/**
* Create BelongsTo Records
*
*/
function createBelongsTo(valuesObject, cb, metaContainer) {
var self = this;
async.each(_.keys(valuesObject.associations.models), function(item, next) {
// Check if value is an object. If not don't try and create it.
if (!_.isPlainObject(valuesObject.values[item])) return next();
// Check for any transformations
var attrName = hop(self._transformer._transformations, item) ? self._transformer._transformations[item] : item;
var attribute = self._schema.schema[attrName];
var modelName;
Iif (hop(attribute, 'collection')) modelName = attribute.collection;
Eif (hop(attribute, 'model')) modelName = attribute.model;
Iif (!modelName) return next();
var model = self.offshore.collections[modelName]._loadQuery(self._query);
var pkValue = valuesObject.associations.models[item][model.primaryKey];
var criteria = {};
var pkField = hop(model._transformer._transformations, model.primaryKey) ? model._transformer._transformations[model.primaryKey] : model.primaryKey;
criteria[pkField] = pkValue;
// If a pkValue if found, do a findOrCreate and look for a record matching the pk.
var query;
if (pkValue) {
query = model.findOrCreate(criteria, valuesObject.values[item]);
} else {
query = model.create(valuesObject.values[item]);
}
Iif(metaContainer) {
query.meta(metaContainer);
}
query.exec(function(err, val) {
Iif (err) return next(err);
// attach the new model's pk value to the original value's key
var pk = val[model.primaryKey];
valuesObject.values[item] = pk;
// now we have pk value attached, remove it from models
delete valuesObject.associations.models[item];
next();
});
}, cb);
}
/**
* Run Before* Lifecycle Callbacks
*
* @param {Object} values
* @param {Function} cb
*/
function beforeCallbacks(values, cb) {
var self = this;
async.series([
// Run Validation with Validation LifeCycle Callbacks
function(cb) {
callbacks.validate(self, values, true, cb);
},
// Before Update Lifecycle Callback
function(cb) {
callbacks.beforeUpdate(self, values, cb);
}
], cb);
}
/**
* Update Records
*
* @param {Object} valuesObjecy
* @param {Function} cb
*/
function updateRecords(valuesObject, cb, metaContainer) {
var self = this;
// Automatically change updatedAt (if enabled)
Eif (this.autoUpdatedAt) {
valuesObject.values.updatedAt = new Date();
}
// Transform Values
valuesObject.values = this._transformer.serialize(valuesObject.values);
// Clean attributes
valuesObject.values = this._schema.cleanValues(valuesObject.values);
// Transform Search Criteria
valuesObject.criteria = self._transformer.serialize(valuesObject.criteria);
// Pass to adapter
self.adapter._loadQuery(self._query).update(valuesObject.criteria, valuesObject.values, function(err, values) {
if (err) {
Eif (typeof err === 'object') { err.model = self._model.globalId; }
return cb(err);
}
// If values is not an array, return an array
if (!Array.isArray(values)) values = [values];
// Unserialize each value
var transformedValues = values.map(function(value) {
return self._transformer.unserialize(value);
});
// Update any nested associations and run afterUpdate lifecycle callbacks for each parent
updatedNestedAssociations.call(self, valuesObject, transformedValues, function(err) {
Iif (err) return cb(err);
async.each(transformedValues, function(record, callback) {
callbacks.afterUpdate(self, record, callback);
}, function(err) {
Iif (err) return cb(err);
var models = transformedValues.map(function(value) {
return new self._model(value);
});
cb(null, models);
});
});
}, metaContainer);
}
/**
* Update Nested Associations
*
* @param {Object} valuesObject
* @param {Object} values
* @param {Function} cb
*/
function updatedNestedAssociations(valuesObject, values, cb) {
var self = this;
var associations = valuesObject.associations || {};
// Only attempt nested updates if values are an object or an array
associations.models = _.pickBy(associations.models, function(vals) {
return _.isPlainObject(vals) || Array.isArray(vals);
});
// If no associations were used, return callback
if (_.keys(associations.collections).length === 0 && _.keys(associations.models).length === 0) {
return cb();
}
// Create an array of model instances for each parent
var parents = values.map(function(val) {
return new self._model(val);
});
// Update any nested associations found in the values object
var args = [parents, associations, cb];
nestedOperations.update.apply(self, args);
}
|