rails helpers

Rails command. Be careful here: if you already have a directory named demo, Rails asks if you want to overwrite existing files. Copy Code code as follows: Dave> CD Work Work> Rails Demo Create Create App/apis Create App/controllers Create App/helpers : : : Create Log/development.

Key points for creating Rails Applications in China (in windows 7, Rails 4.2.0) and rails4.2.0 1. the application created using the rails new command will not succeed when the bundle install is automatically executed. Based on the error prompt, it is determined that the cause may be the security problem of the wall and https certificate. as a development envir

Install and use jquery-file-upload step by step1. Install gem Add the gem of jquery-fileupload-rails and paperclip to gemfile: gem "jquery-fileupload-rails"gem 'paperclip'2. Add in APP/assets/application. js //= require jquery-fileupload3. Add in APP/assets/stylesheets/application.css *= require jquery.fileupload-ui4. Create a picture data table rails g mo

A solution for modifying operation conflicts in Rails applications at the same time. A rails Solution Operating conflicts in Rails Applications are a common problem. Rails provides a simple and effective solution. For example, there is a shop module in our system. An important part of the store is the management of pro

Rails implements field encryption storage and rails field Encryption Solution Data is encrypted before being stored in the database.The KEY is used for decryption after reading. Implementation ActiveSupport: MessageEncryptor is a class implemented by Rails Based on openssl encapsulation. It can be used to encrypt and decrypt an object. For example: salt = SecureR

New rails4.2.6 project, project can not be accessed through intranet ip:3000, only localhost:3000 access since Rails4.2 is bound to 0.0.0.0,rails 4.2 by default, localhost is bound by default. The default boot console information is as follows: Rails 4.2.2 Application starting in development on http://localhost:3000 The following modifications are made via IP access:The CONFIG/BOOT.RB directory under en

The following method defines constants and global variables in Rails. If you want to access any environment (development, testing, or product), it is defined in config/environment. rb. For example: BOOLEN_TRUE = 1 If you want your global variables to be determined by the Environment, configure /Config/environments/development. rb /Config/environments/test. rb /Config/environments/production. rb Note,1> constants and global variables must all be in up

1. Apps created with the rails new command will not succeed in automating the bundle install, and depending on the error prompt, it may be the security of the certificate that is being wall and HTTPS. As a development environment, choose to bypass the method, in the directory C:\ProgramData build GEMRC file, inside only one line of code can:: ssl_verify_mode:02. Run the command gem sources-a http://gems.ruby-china.org to add the Ruby-china gem Source

This chapter launches the introduction of model: including check and delete operation. And then the above section, [Ruby on Rails] and I learned the HelloWorldCreating models using commands to create modelsCreate a table post, default comes with two field title:string, Content:text, use the singular post instead of the plural in the model by convention postsCD Blograils G model post title:string Content:textOutput: Invoke Active_record crea

1. Auxiliary methods2. StringEnter "IRB" into the ruby command-line development environment, and the controller starts by executing "rails console" on the command line.(1) String connection>>"foo"+"bar"="foobar" (2) Interpolation by special syntax #{}>>first_name="Amy" ="Amy">>" #{first_name} Sun"+"Amy Sun "(3) The difference between a single-quote string and a double-quote string: Single-quote strings they really are literal values, contain only the

Uva514 rails (Rails) Question: railsLink: uva514Description:There is a railway station in a city, with N trains entering the station from the direction, numbered 1-N in the order of arrival. your task is to determine whether you can allow them to enter the Track B in a specific order and enter the station. For example, the order of the output stack (5 4 1 2 3) is impossible, but (5 4 3 2 1) is possible.Ques

. opts file in the spec directory (Path: platform_base/spec. opts). The content is as follows: Copy codeThe Code is as follows: -- color-- Format progress-- Loadby mtime-- Reverse 4. Create a Rails app named test_app under the spec directory. This new application requires the spec directory and the spec_helper.rb file. 5. To simplify the process, sort out the new app (test_app) and delete the vendor and public directories. The final structure is as fo

Algorithm competition entry classic 6.1.2 stack and queue-rails, algorithm competition entry classic rails There is a railway station in a city, as shown in. There are n trains entering the station from the direction, numbered 1 ~ N. Your task is to let them enter the Track B in a specific order and exit the station. In order to restructure the carriage, you can use the transfer station C. This is a station

=${zlib-dir}/include--with-zlib-lib--without-zli B-lib=${zlib-dir}/lib--enable-cross-build--disable-cross-build to the why this extension failed to compile, ple ASE Check the Mkmf.log which can be found here:/VAR/LIB/GEMS/2.3.0/EXTENSIONS/X86_64-LINUX/2.3.0/NOKOGIRI-1.8.2/MKMF.L OG extconf failed, exit code 1 GEM files would remain installed in/var/lib/gems/2.3.0/gems/nokogiri-1.8.2 for inspection . Results logged To/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nokogiri-1.8.2/gem_make.out

tags and even tag cloud calculations.3. minus_r-if you are not keen on the prototype JavaScript library and want to use alternative libraries without replacing the default rails JavaScript helpers or want to write real Javascript in your RJS templates This plugin is for you.4. acts_as_ferret-powerful search plugin that fuilds on the ferret gem for enabling full text searching in your applications. ferret i

| \-routes.rb |-DB | \-Test.sqlite3 |-Log \-Spec \-spec_helper.rb 6. In the CONFIG/ENVIRONMENT.RB configuration file, add the following code: Rails::initializer.run do |config| Config.gem ' rails_platform_base ' End 7. Add the HELPERS_SPEC.RB document under the platform_base/spec/directory, which reads as follows: Require File.join (File.dirname (__file__), ' Test_app/spec/spec_helper ') Describe "

Dates, Params and you Dec 3rd, 2008 A Not particle ly nice area of rails are the date and time helpers. 3 popups just isn' t a very nice bit of user interface. it's a lot of clicks when you want to change dates and most people can't reason in their head about just the date. it's far easierTo pick a date from a calendar type view. Still the helpers

a resource. Pundit provides a simpler and less "magic" permission management solution by using Ruby class-defined authorization systems.Slim There are many template systems. Ruby on Rails uses the eRuby template system by default, but users usually choose another template system instead. Slim is usually used because it allows you to maintain easy-to-read templates. With its simple syntax, it can be maintained quickly with less Compilation Time.Draper

Define_url_helper route, name, kind, hash End End def define_named_route_methods(name, route) {:url => {:only_path => false}, :path => {:only_path => true}}.each do |kind, opts| hash = route.defaults.merge(:use_route => name).merge(opts) define_hash_access route, name, kind, hash define_url_helper route, name, kind, hash endend Or you already know that named route has two types of helper Methods: name_url and name_path. From the above code, we can see the real implementation. Her

class library. Many Ruby ides written in Java use jruby to explain the syntax. Jruby on rails Http://book.51cto.com/art/200807/79142.htm This project is run using the complete jar package of jruby. For details, refer Http://spin.atomicobject.com/2010/02/01/running-a-ruby-application-with-jruby-complete/ Example of jruby on rails Http://www.infoq.com/cn/news/2008/07/csi-disease-management-jruby