Association injections overwrite existing defined validations

Injection uses underscore's extend, which overwrites any validation (or other attributes) previously defined in the model.
The patch uses underscore's defaults command, which only overwrites the rawAttributes if the column is not already defined.

lib/associations/belongs-to.js

@@ -22,7 +22,7 @@ module.exports = (function() {
 
 
     this.identifier = this.options.foreignKey || Utils._.underscoredIf(Utils.singularize(this.target.tableName) + "Id", this.source.options.underscored)
     this.identifier = this.options.foreignKey || Utils._.underscoredIf(Utils.singularize(this.target.tableName) + "Id", this.source.options.underscored)
     newAttributes[this.identifier] = { type: DataTypes.INTEGER }
     newAttributes[this.identifier] = { type: DataTypes.INTEGER }
-    Utils._.extend(this.source.rawAttributes, newAttributes)
+    Utils._.defaults(this.source.rawAttributes, newAttributes)
     return this
     return this
   }
   }
 
 

lib/associations/has-many.js

@@ -63,7 +63,7 @@ module.exports = (function() {
     } else {
     } else {
       var newAttributes = {}
       var newAttributes = {}
       newAttributes[this.identifier] = { type: DataTypes.INTEGER }
       newAttributes[this.identifier] = { type: DataTypes.INTEGER }
-      Utils._.extend(this.target.rawAttributes, newAttributes)
+      Utils._.defaults(this.target.rawAttributes, newAttributes)
     }
     }
 
 
     return this
     return this

lib/associations/has-one.js

@@ -27,7 +27,7 @@ module.exports = (function() {
 
 
     this.identifier = this.options.foreignKey || Utils._.underscoredIf(Utils.singularize(this.source.tableName) + "Id", this.options.underscored)
     this.identifier = this.options.foreignKey || Utils._.underscoredIf(Utils.singularize(this.source.tableName) + "Id", this.options.underscored)
     newAttributes[this.identifier] = { type: DataTypes.INTEGER }
     newAttributes[this.identifier] = { type: DataTypes.INTEGER }
-    Utils._.extend(this.target.rawAttributes, newAttributes)
+    Utils._.defaults(this.target.rawAttributes, newAttributes)
 
 
     return this
     return this
   }
   }