Merge pull request #3 from strongloop/where-for-delete

Fix the where option for delete

lib/connectors/memory.js

@@ -225,11 +225,24 @@ function applyFilter(filter) {
     }
 }
 
-Memory.prototype.destroyAll = function destroyAll(model, callback) {
-    Object.keys(this.cache[model]).forEach(function (id) {
-        delete this.cache[model][id];
+Memory.prototype.destroyAll = function destroyAll(model, where, callback) {
+    if(!callback && 'function' === typeof where) {
+        callback = where;
+        where = undefined;
+    }
+    var cache = this.cache[model];
+    var filter = null;
+    if (where) {
+        filter = applyFilter({where: where});
+    }
+    Object.keys(cache).forEach(function (id) {
+        if(!filter || filter(this.fromDb(model, cache[id]))) {
+            delete cache[id];
+        }
     }.bind(this));
+    if(!where) {
         this.cache[model] = {};
+    }
     process.nextTick(callback);
 };
 

lib/dao.js

@@ -469,18 +469,29 @@ DataAccessObject.findOne.http = [
 ];
 
 /**
- * Destroy all records
- * @param {Function} cb - callback called with (err)
+ * Destroy all matching records
+ * @param {Object} [where] An object that defines the criteria
+ * @param {Function} [cb] - callback called with (err)
  */
+DataAccessObject.remove =
 DataAccessObject.deleteAll =
-DataAccessObject.destroyAll = function destroyAll(cb) {
+DataAccessObject.destroyAll = function destroyAll(where, cb) {
     if (stillConnecting(this.dataSource, this, arguments)) return;
 
-    this.dataSource.connector.destroyAll(this.modelName, function (err) {
-        if ('function' === typeof cb) {
-            cb(err);
+    if(!cb && 'function' === typeof where) {
+        cb = where;
+        where = undefined;
     }
+    if(!where) {
+        this.dataSource.connector.destroyAll(this.modelName, function (err, data) {
+            cb && cb(err, data);
         }.bind(this));
+    } else {
+        // Support an optional where object
+        this.dataSource.connector.destroyAll(this.modelName, where, function (err, data) {
+            cb && cb(err, data);
+        }.bind(this));
+    }
 };
 
 /**
@@ -488,6 +499,7 @@ DataAccessObject.destroyAll = function destroyAll(cb) {
  * @param {*} id The id value
  * @param {Function} cb - callback called with (err)
  */
+DataAccessObject.removeById =
 DataAccessObject.deleteById =
     DataAccessObject.destroyById = function deleteById(id, cb) {
         if (stillConnecting(this.dataSource, this, arguments)) return;
@@ -633,6 +645,7 @@ DataAccessObject.prototype._adapter = function () {
  *
  * @triggers `destroy` hook (async) before and after destroying object
  */
+DataAccessObject.prototype.remove =
 DataAccessObject.prototype.delete =
 DataAccessObject.prototype.destroy = function (cb) {
     if (stillConnecting(this.constructor.dataSource, this, arguments)) return;

lib/datasource.js

@@ -176,7 +176,14 @@ DataSource.prototype.setup = function(name, settings) {
     
     // just save everything we get
     this.name = name;
-    this.settings = settings;
+    this.settings = settings || {};
+
+    // Check the debug env settings
+    var debugEnv = process.env.DEBUG || process.env.NODE_DEBUG || '';
+    var debugModules = debugEnv.split(/[\s,]+/);
+    if(debugModules.indexOf('loopback') !== -1) {
+        this.settings.debug = true;
+    }
 
     // Disconnected by default
     this.connected = false;

test/basic-querying.test.js

@@ -291,6 +291,27 @@ describe('basic-querying', function() {
 
     });
 
+    describe('destroyAll with where option', function() {
+
+        before(seed);
+
+        it('should only delete instances that satisfy the where condition', function(done) {
+            User.destroyAll({name: 'John Lennon'}, function() {
+                User.find({where: {name: 'John Lennon'}}, function(err, data) {
+                    should.not.exist(err);
+                    data.length.should.equal(0);
+                    User.find({where: {name: 'Paul McCartney'}}, function(err, data) {
+                        should.not.exist(err);
+                        data.length.should.equal(1);
+                        done();
+                    });
+                });
+            });
+        });
+
+    });
+
+
 
 });