validate(s)_presence_of

Migration should create pluralized table names
Change controller filenames

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Rails5ServerCodegen.java

@@ -281,8 +281,8 @@ public class Rails5ServerCodegen extends DefaultCodegen implements CodegenConfig
         // replace - with _ e.g. created-at => created_at
         name = name.replaceAll("-", "_"); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
 
-        // e.g. PhoneNumberApi.rb => phone_number_api.rb
-        return underscore(name) + "_controllers";
+        // e.g. DefaultController => defaults_controller.rb
+        return underscore(name) + "s_controller";
     }
 
     @Override

modules/swagger-codegen/src/main/resources/rails5/migrate.mustache

@@ -4,7 +4,7 @@
 
 class InitTables < ActiveRecord::Migration
   def change{{#models}}{{#model}}
-    create_table :{{classFilename}}, id: false do |t|{{#vars}}{{#isContainer}}
+    create_table "{{classFilename}}".pluralize.to_sym, id: false do |t|{{#vars}}{{#isContainer}}
       t.string :{{name}}{{/isContainer}}{{^isContainer}}
       t.{{datatype}} :{{{name}}}{{/isContainer}}{{/vars}}
 

modules/swagger-codegen/src/main/resources/rails5/model.mustache

@@ -5,7 +5,7 @@
 {{#models}}{{#model}}
 class {{classname}} < ApplicationRecord
 {{#requiredVars}}
-  validate_presence_of :{{name}}
+  validates_presence_of :{{name}}
 {{/requiredVars}}{{#vars}}{{#isListContainer}}
   serialize :{{name}}, Array{{/isListContainer}}{{#isMapContainer}}
   serialize :{{name}}, Hash{{/isMapContainer}}{{/vars}}

samples/server/petstore/rails5/app/models/pet.rb

@@ -23,8 +23,8 @@ limitations under the License.
 
 
 class Pet < ApplicationRecord
-  validate_presence_of :name
-  validate_presence_of :photo_urls
+  validates_presence_of :name
+  validates_presence_of :photo_urls
 
   serialize :photo_urls, Array
   serialize :tags, Array

samples/server/petstore/rails5/db/migrate/0_init_tables.rb

@@ -23,7 +23,7 @@ limitations under the License.
 
 class InitTables < ActiveRecord::Migration
   def change
-    create_table :api_response, id: false do |t|
+    create_table "api_response".pluralize.to_sym, id: false do |t|
       t.integer :code
       t.string :type
       t.string :message
@@ -31,14 +31,14 @@ class InitTables < ActiveRecord::Migration
       t.timestamps
     end
 
-    create_table :category, id: false do |t|
+    create_table "category".pluralize.to_sym, id: false do |t|
       t.integer :id
       t.string :name
 
       t.timestamps
     end
 
-    create_table :order, id: false do |t|
+    create_table "order".pluralize.to_sym, id: false do |t|
       t.integer :id
       t.integer :pet_id
       t.integer :quantity
@@ -49,7 +49,7 @@ class InitTables < ActiveRecord::Migration
       t.timestamps
     end
 
-    create_table :pet, id: false do |t|
+    create_table "pet".pluralize.to_sym, id: false do |t|
       t.integer :id
       t.string :category
       t.string :name
@@ -60,14 +60,14 @@ class InitTables < ActiveRecord::Migration
       t.timestamps
     end
 
-    create_table :tag, id: false do |t|
+    create_table "tag".pluralize.to_sym, id: false do |t|
       t.integer :id
       t.string :name
 
       t.timestamps
     end
 
-    create_table :user, id: false do |t|
+    create_table "user".pluralize.to_sym, id: false do |t|
       t.integer :id
       t.string :username
       t.string :first_name