rails crud

1. Visit the official website of the Rails i18n plugin to view the informationHttp://guides.rubyonrails.org/i18n.html2. Add the test to Gemfile rails4.2.1 do not install this gemGem ' rails-i18n '3. Install by using bundle install4. Configure CONFIG/APPLICATION.RB[Ruby] View plaincopy1. # CONFIG/APPLICATION.RB2. Config.i18n.load_path + = dir[rails.root.join (' config ', ' locales ', ' * * ', ' *.{ RB,YML} '

The essay briefly understands the use of rails ' test and test data, and this time to see how to add a test to a model for deletion and modification. 1. Or using the last written products_test.rb, modify the Test_turth method by the name Test_create and make the contents: def test_create assert_kind_of Product, @product assert_equal 1, @product. ID assert_equal "pragmatic Ver Sion control ", @product. Title assert_equal" I to use version control ",

Create & Save Create & Save Order = order.new order.name = "VIRUSSWB" order.email = "asdf@exmaple.com" order.save You can save to the database after you call the Save method. You can also use block to create and save. Order.new do |order|

Action Web Service. Active Resource fully understands RESTful Routing and XML representations. It is a class that maps a RESTful resource to a model in a Rails application. Active Resource provides tools to quickly and easily use RESTful Web services that adhere to the Rails RESTful URI structure and protocol conventions. Active Resource maps responses from any qualifying service to a rich Ruby object. Act

The first two sections of this series have already covered how to configure the Ruby on Rails development environment, and now it's time to get to the point!Part1. Pre-development Preparation The main task of this time is to develop the first rails program. In particular, this time I chose a (PAAs development platform), which is the Cloud 9 platform described in the

(Windows) (9)-add error handling to the shopping cart Ruby on Rails development from scratch (Windows) (10)-Clear the shopping cart and format the amount Ruby on Rails development from scratch (Windows) (11)-order (Order) Ruby on Rails development from scratch (Windows) (12)-order (Order) Ruby on Rails development fro

the following link for more information. When you want to create something, you want to post a specific URL address; when you want to get the object content, put the location of the relevant resource in the URL, and then get; when you want to change this object, you can use post. Some people also use get operations to do this. In fact, this is not good. The delete operation also uses post. Looking at such a picture, sometimes I feel a little crazy. One of our purposes in

Simple CRUD (1), simple CRUD (I. JDBC overview-(from Baidu) JDBC (Java DataBase Connectivity, java DataBase connection) is a Java API used to execute SQL statements. It can provide unified access to multiple relational databases, it consists of a group of classes and interfaces written in Java. JDBC provides a benchmark to build more advanced tools and interfaces so that database developers can write databa

Dapper skills and basic CRUD, dapper skills crudDapper skills and basic CRUD 1. add, delete, modify, and query a model. class ATest { public int ID { get; set; } public string Name { get; set; } public string Code { get; set; } } 2. Create a database 1 CREATE TABLE [dbo].[ATest]( 2 3 [ID] [INT] IDENTITY(1,1) NOT NULL, 4 5 [Name] [VARCHAR](50) NULL, 6

"the object that wraps data rows in database tables or views, encapsulates database access, and adds domain logic to data ". In rails, each domain object will be extended to provide crud operationsActiveRecord::Base.Like hibernate, active record does not need to map files. In fact, developers using active record do not need to encode the attributes of getter, setter, and even classes. Through some beautifu

The object class calls the static method in the generic parent class to execute CRUD -- the first version, static crud public abstract class LYEntityDbContext

Oracle table management-crud introduction, oracle table crud Insert Statement (add data) Update Statement (Update data) Delete Statement (Delete data) Select Statement (query data) 1. Manage oracle tables-add data Use the INSERT statement to INSERT data to the table. Insert into table [(column [, column...])] VALUES (value [, value...]); The inserted data should be of the same type as the field data. The d

as "writing programs that can write and operate other programs (or themselves ), use other programs as their own data programs, or write programs that complete part of the work done by other programs at runtime." the following code implements reflection: 01 OBJ = "some_string" 02 if obj. respond_to? ('Length'): 03 puts "OBJ length = # {obj. Length}" 03 end> OBJ length = 5 This code implements metaprogramming:

Ruby on Rails is a suddenly popular framework that acts as a catalyst for the ruby programming language. As Ruby experiences continue to succeed, developers began to seek to integrate their ruby applications with applications written in other languages. Rails provides excellent support for Web Services. This article introduces the Web service in rails, focusing o

implement CRUD We will use the scaffold feature of Rails to generate source code files such as model, controller, view, and database migration for working with picture Publishing. Copy Code code as follows: Rails Generate scaffold post title filename Qiniu_hash Rake Db:migrate The access http://localhost:3000/posts can see that we've g

When pry is used, you will feel that the previously used debugger method is so complicated and troublesome that it brings up the troubles of rails S and takes time to enhance IRB's functions, By default, the pry configuration is enough, so that the rails console can also rest. Installation: Add in gemfile gem ‘pry‘, :group =gt; :development Then execute bundle install You can.Usage: Replace the IRB method w

$ Rails _ 3.0.5 _ new depotRubygems. RB: 244: In 'bin _ path': Can't Find gem railties (["3.0.5"]) with executable rails (GEM: gemnotfoundexception)ErrorAfter you reinstall rails sudo gem install rails -- version 3.0.5$ Rails _ 3.0.5 _ new depotDependency. RB: 247: In 'to _

Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu., railsubuntuAbout Ruby on Rails Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications. ruby on Rails does take a little while to ins

a smart freak. Its efficiency is indisputable. It is called rails.Okay, let's not talk about this. Let's talk about anything else:I Used Rails to create a small app. I threw it away and soon rewritten it in Java. I think rails can quickly complete 80% in your app, while the remaining 20% takes more time than the previous 80%. Of course program development is like this. Scaffolding is very cool, especially

How can we improve the performance of RailS Applications ?, Improve rails Is rails slow? 「 Railway is slow 」. You may have heard of this joke. What about our Rails framework?If Rails is slow, how to improve the performance of Rails