toolbox with rails

The previous 30 articles are based on the contents of the book written, rarely have their own understanding, from this beginning to understand some of the internal rails mechanism, so understand more things, less code, this time we look at the Rails directory structure. About the directory structure of rails, we should have some understanding of the previous exe

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

Official website: http://www.cs.ubc.ca/~murphyk/Software/HMM/hmm.htmlDownloadClick here. Unziping creates a directory called Hmmall, which contains 4 subdirectories.InstallationAssuming unzip it to c:/hmmall ...>> Addpath (Genpath (' C:/hmmall ')) >> testhmmHere is a sample code that demonstrates how to fill in an existing probabilistic build model: q = 3 #% more countries ( Sun , rain , fog O = 2;% # number of continuous observations ( umbrella , no umbrella )% # Priori probabilitiespri

useful packages for Ruby or rails, you can browse the Ruby Toolbox and it's easy to sort by the suite's popularity.Common directivesgem -v 告訴你 RubyGems 的版本gem update --system 升級RubyGems的版本gem install gem_name 安裝某個套件gem list 列出安裝的套件gem update gem_name 更新最新版本gem update 更新所有你安裝的Gemsgem install -v x.x.x gemname 安裝特定版本gem uninstall gem_name 反安裝 When executed gem install gem_name , it will automatically

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

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

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

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

Brief introduction The Ruby on Rails framework has been widely watched since its inception and, guided by ideas like "Don't repeat Yourself" and "contract is superior to configuration", rails gives Web developers a very high level of development efficiency. ActiveRecord's flexibility allows you to use a very easy-to-use Hibernate without cumbersome configuration, Github and Rubygems's rich and varied

ArcGIS secondary development practices-Traverse tools in ToolBox !, Arcgistoolbox In AO, the basic process for opening file A is: 1. Create A WorkspaceFactory corresponding to "file; 2. Use WorkspaceFactory to create the Workspace of "file A". The Workspace can be the folder where the file is located (for example, the Workspace of the ToolBox to be created later in this article ), it can also be a spatial d

Recently studied a few days of deep learning of the MATLAB Toolbox code, found that the author gives the source of the comments is very poor, in order to facilitate everyone to read, the code has been commented, share with you.Before reading the MATLAB Toolbox code, we recommend that you read a few CNN two classic materials, the convolutional neural Network MATLAB Toolb