Make sure eager loading validater can correctly identify associations after setting default alias

lib/associations/belongs-to.js

@@ -8,6 +8,7 @@ module.exports = (function() {
     this.source               = source
     this.target               = target
     this.options              = options
+    this.isSingleAssociation  = true
     this.isSelfAssociation    = (this.source.tableName == this.target.tableName)
 
     if (this.isSelfAssociation && !this.options.foreignKey && !!this.options.as) {

lib/associations/has-many.js

@@ -17,6 +17,7 @@ module.exports = (function() {
     this.options = options
     this.sequelize = source.daoFactoryManager.sequelize
     this.through = options.through
+    this.isMultiAssociation = true
     this.isSelfAssociation = (this.source.tableName === this.target.tableName)
     this.doubleLinked = false
     this.combinedTableName = Utils.combineTableNames(

lib/associations/has-one.js

@@ -8,6 +8,7 @@ module.exports = (function() {
     this.source               = srcDAO
     this.target               = targetDAO
     this.options              = options
+    this.isSingleAssociation  = true
     this.isSelfAssociation    = (this.source.tableName == this.target.tableName)
 
     if (this.isSelfAssociation && !this.options.foreignKey && !!this.options.as) {

lib/dao-factory.js

@@ -561,8 +561,9 @@ module.exports = (function() {
     if (options.hasOwnProperty('include') && (!options.includeValidated || !options.includeNames)) {
       options.includeNames = []
       options.include = options.include.map(function(include) {
+        include = validateIncludedElement.call(this, include)
         options.includeNames.push(include.as)
-        return validateIncludedElement.call(this, include)
+        return include
       }.bind(this))
     }
 
@@ -1223,6 +1224,11 @@ module.exports = (function() {
         var usesAlias   = (include.as !== include.daoFactory.tableName)
           , association = (usesAlias ? this.getAssociationByAlias(include.as) : this.getAssociation(include.daoFactory))
 
+        // If single (1:1) association, we singularize the alias, so it will match the automatically generated alias of belongsTo/HasOne
+        if (association && !usesAlias && association.isSingleAssociation) {
+          include.as = Utils.singularize(include.daoFactory.tableName, include.daoFactory.options.language)
+        }
+
         // check if the current daoFactory is actually associated with the passed daoFactory
         if (!!association && (!association.options.as || (association.options.as === include.as))) {
           include.association = association

lib/dao.js

@@ -530,7 +530,7 @@ module.exports = (function() {
     for (key in attrs) {
       if (options.include && options.includeNames.indexOf(key) !== -1) {
         var include = _.find(options.include, function (include) {
-          return include.as === key
+          return include.as === key || (include.as.slice(0,1).toLowerCase() + include.as.slice(1)) === key
         })
         var association          = include.association
           , self                 = this
@@ -544,7 +544,7 @@ module.exports = (function() {
           var daoInstance = include.daoFactory.build(data, { isNewRecord: false, isDirty: false })
             , isEmpty     = !Utils.firstValueOfHash(daoInstance.identifiers)
 
-          if (['BelongsTo', 'HasOne'].indexOf(association.associationType) > -1) {
+          if (association.isSingleAssociation) {
             accessor = Utils.singularize(accessor, self.sequelize.language)
             self.dataValues[accessor] = isEmpty ? null : daoInstance
             self[accessor] = self.dataValues[accessor]

test/dao-factory.test.js

@@ -368,6 +368,49 @@ describe(Support.getTestDialectTeaser("DAOFactory"), function () {
       expect(p.price2).to.equal(20)
       done()
     })
+
+    /*describe('include', function () {
+      it('should support basic includes', function () {
+        var Product = this.sequelize.define('Product', {
+          title: Sequelize.STRING
+        })
+        var Tag = this.sequelize.define('Tag', {
+          name: Sequelize.STRING
+        })
+        var User = this.sequelize.define('User', {
+          first_name: Sequelize.STRING,
+          last_name: Sequelize.STRING
+        })
+
+        Product.hasMany(Tag)
+        Product.belongsTo(User)
+
+        var product = Product.build({
+          id: 1,
+          title: 'Chair',
+          tags: [
+            {id: 1, name: 'Alpha'},
+            {id: 2, name: 'Beta'}
+          ],
+          user: {
+            id: 1,
+            first_name: 'Mick',
+            last_name: 'Hansen'
+          }
+        }, {
+          include: [
+            User,
+            Tag
+          ]
+        })
+
+        expect(product.tags).to.be.ok
+        expect(product.tags.length).to.equal(2)
+        expect(product.tags[0].Model).to.equal(Tag)
+        expect(product.user).to.be.ok
+        expect(product.user.Model).to.equal(User)
+      })
+    })*/
   })
 
   describe('findOrInitialize', function() {