initializer(&block) Execute the block on initialization, it yields to the application in Java

Draw QR Code JIS X 0510 in Java initializer(&block) Execute the block on initialization, it yields to the application
initializer(&block) Execute the block on initialization, it yields to the application
QR Code Printer In Java
Using Barcode generator for Java Control to generate, create QR Code image in Java applications.
configuration object
Create Barcode In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
config Provides access to the global configuration object rake tasks(&block) Loads rake tasks to be used by the application generators(&block) Require generators to be used by the application log subscriber(name, subscriber) Register a custom log subscriber for your
Decoding Bar Code In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
framework
Denso QR Bar Code Drawer In C#
Using Barcode creation for .NET Control to generate, create QR Code image in .NET applications.
193 Conclusion
QR-Code Creation In .NET
Using Barcode maker for ASP.NET Control to generate, create QR image in ASP.NET applications.
A more thorough example is
Create QR-Code In Visual Studio .NET
Using Barcode encoder for .NET Control to generate, create QR image in VS .NET applications.
require 'my_gem' require 'rails' module MyGem class Railtie < Rails::Railtie initializer "setup" do # Some initialization code here, like setting up a # database connection end initializer "verify setup" do configafter_initialize do # Do some verification on the setup end end rake_tasks do load 'my_gem/railties/tasksrake' end generators do require 'my_gem/rails/generators/my_generator' end log_subscriber :my_gem, MyGem::Railtie::Subscribernew end end
Generating QR Code 2d Barcode In Visual Basic .NET
Using Barcode creation for .NET Control to generate, create Quick Response Code image in .NET framework applications.
Plugins
Code 3/9 Drawer In Java
Using Barcode creator for Java Control to generate, create Code 39 Extended image in Java applications.
Note
Data Matrix Drawer In Java
Using Barcode maker for Java Control to generate, create Data Matrix ECC200 image in Java applications.
Rails Engines are self-contained applications that can be packaged as gems and included in another Rails application Devise (covered in 14) is an example of an engine and contains, among other things, its own configuration, routes, models, controllers, views and even generators The primary author of Devise, Jose Valim, has written one of the best descriptions of creating a Rails Engine at https://gistgithubcom/af7e572c2dc973add221# file_2_enginerdoc
Printing Code128 In Java
Using Barcode generation for Java Control to generate, create Code-128 image in Java applications.
193 Conclusion
EAN128 Creator In Java
Using Barcode creation for Java Control to generate, create GS1 128 image in Java applications.
You have now learned about all the basic aspects of Rails plugins You learned how to install and remove them You also learned the fundamentals of writing your own plugins, enough to at least get you started experimenting with them
Create Bar Code In Java
Using Barcode maker for Java Control to generate, create bar code image in Java applications.
19: Extending Rails with Plugins
Drawing 2 Of 5 Interleaved In Java
Using Barcode creation for Java Control to generate, create ANSI/AIM I-2/5 image in Java applications.
To cover everything related to Rails plugins would require its own book and would go beyond the needs of most Rails developers, so we did not cover testing plugins or the more advanced techniques employed by plugin developers We also did not discuss topics related to the life of a plugin beyond its initial development For in-depth learning about extending Rails with plugins, I strongly recommend the Addison-Wesley publication Rails Plugins by James Adam, who is considered the world s top expert on the subject
Data Matrix Generation In Visual Studio .NET
Using Barcode printer for .NET framework Control to generate, create Data Matrix ECC200 image in .NET applications.
C HAPTER 20
Encode EAN 128 In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
Background Processing
Code 3/9 Creation In Visual Basic .NET
Using Barcode maker for VS .NET Control to generate, create Code-39 image in VS .NET applications.
People count up the faults of those who keep them waiting French Proverb
Generate Code 39 Full ASCII In Visual Studio .NET
Using Barcode maker for .NET Control to generate, create USS Code 39 image in Visual Studio .NET applications.
Users of modern websites have lofty expectations when it comes to application responsiveness most likely they will expect behavior and speed similar to that of desktop applications Proper user experience guidelines would dictate that no HTTP request/ response cycle should take more than a second to execute however there will be actions that arise that simply cannot achieve this time constraint Tasks of this nature can range from simple, long running tasks due to network latency to more complex tasks that require heavy processing on the server Examples of these actions could be sending an email or processing video, respectively In these situations, it is best to have the actions execute asynchronously, so that the responsiveness of the application remains swift while the procedures run In this chapter these types of tasks are referred to as background jobs They include any execution that is handled in a separate process from the Rails application Rails and Ruby have several libraries and techniques for performing this work, most notably:
Bar Code Creation In .NET Framework
Using Barcode maker for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Delayed Job Resque Rails Runner
Bar Code Scanner In .NET Framework
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
Background Processing
Make European Article Number 13 In Visual Studio .NET
Using Barcode encoder for .NET Control to generate, create GTIN - 13 image in .NET framework applications.
This chapter will cover each of these tools, discussing the strengths and weaknesses of each one so that you may determine what is appropriate for your application
20: Background Processing
201 Delayed Job
Delayed Job1 is a robust background processing library that is essentially a highly configurable priority queue It provides various approaches to handling asynchronous actions, including:
Custom background jobs Permanently marked background methods Background execution of methods at runtime
By default Delayed Job relies on Active Record to store all queue related operations and requires a relational database to store job information However, it can be configured to use other persistence frameworks, as well as other non-relational databases Supported options are:
DataMapper MongoMapper (for use with MongoDB) CouchREST (for use with CouchDB)
2011 Getting Started
Add the delayed_job gem to your application s Gemfile, then run the generator to create your execution and migration scripts
rails generate delayed_job
This will create the database migration that will need to be run to set up the delayed_jobs table in the database, as well as a script to run Delayed Job If you are using MongoMapper or CouchREST as the persistence framework, you may run the command with a --skip-migration option supplied since no migration will be needed To change the default settings for Delayed Job, first add a delayed_jobrb in your config/initializers directory Options then can be configured by calling various methods on Delayed::Worker, which include settings for changing the behavior of the queue with respect to tries, timeouts, maximum run times, sleep delays and other options