Add attribute.field support for sync()

lib/dialects/mysql/query-generator.js

@@ -245,6 +245,7 @@ module.exports = (function() {
 
       for (var name in attributes) {
         var dataType = attributes[name];
+        var fieldName = dataType.field || name;
 
         if (Utils._.isPlainObject(dataType)) {
           var template;
@@ -305,9 +306,9 @@ module.exports = (function() {
 
           }
 
-          result[name] = template;
+          result[fieldName] = template;
         } else {
-          result[name] = dataType;
+          result[fieldName] = dataType;
         }
       }
 

lib/dialects/postgres/query-generator.js

@@ -391,6 +391,7 @@ module.exports = (function() {
 
       for (var name in attributes) {
         var dataType = attributes[name];
+        var fieldName = dataType.field || name;
 
         if (Utils._.isObject(dataType)) {
           var template = '<%= type %>'
@@ -467,9 +468,9 @@ module.exports = (function() {
             replacements.comment = this.escape(dataType.comment);
           }
 
-          result[name] = Utils._.template(template)(replacements);
+          result[fieldName] = Utils._.template(template)(replacements);
         } else {
-          result[name] = dataType;
+          result[fieldName] = dataType;
         }
       }
 

lib/dialects/sqlite/query-generator.js

@@ -232,6 +232,7 @@ module.exports = (function() {
 
       for (var name in attributes) {
         var dataType = attributes[name];
+        var fieldName = dataType.field || name;
 
         if (Utils._.isObject(dataType)) {
           var template     = "<%= type %>"
@@ -291,9 +292,9 @@ module.exports = (function() {
 
           }
 
-          result[name] = Utils._.template(template)(replacements);
+          result[fieldName] = Utils._.template(template)(replacements);
         } else {
-          result[name] = dataType;
+          result[fieldName] = dataType;
         }
       }