railsspace building a social networking website with ruby on rails phần 8 pps

... between RailsSpace users. 13.1 Action Mailer Sending email in Rails is easy with the Action Mailer package. Rails applies the MVC architecture to email, with an Action Mailer class playing the part ... actually send them. We’ll start by making a general Email controller to handle the various email actions on RailsSpace, starting with a remind action: > ruby script/gene...

Ngày tải lên: 13/08/2014, 08:20

... and 16). In the context of computers, an avatar is an image or other graphical representation of a particular person. 1 On RailsSpace, the avatar will simply be an uploaded image. It can be a ... the RailsSpace database. Once we’ve done that, we’ll be in a position to make the distance calculation needed to find all locations within a certain radius of a given zip code. While w...

Ngày tải lên: 13/08/2014, 08:20

... (Create, Read, Update, Delete 7 ) operations of relational databases. In contrast to the traditional controller/action/id approach, REST embraces the radical notion that there are only four actions—the ... use a tag modifier as if it were an action, so that /specs/1;tag would respond to a PUT request and update the spec with a tag. But look at it another way: Fundamentally, we are cre...

Ngày tải lên: 13/08/2014, 08:20

... 345–350 geographical location, 350 GeoData, 352–355 local databases, 351–352 names, 355–3 58 validation, 3 58 363 button to function, 81 button to function function, 499 Caching, 510 Calculations for distances ... data, 305 loading data, 305–307 searching. See Searching CommunityController class, 312 concat function, 334–335 Concatenating arrays, 335 Conditional statements, 82 confirm fu...

Ngày tải lên: 13/08/2014, 08:20

... database (Optional) an additional module to display the items on the website (Optional) a search plug-in, so that you can search your new content So that you get an idea of what I am talking about ... respective anchors within the documents and are arranged semantically correctly by means of a list. The JText commands are for translation and are automatically translated into the def...

Ngày tải lên: 14/08/2014, 10:22

... Using arrays 279 Creating a new array 279 ■ Inserting, retrieving, and removing array elements 280 ■ Combining arrays with other arrays 283 ■ Array transformations 285 ■ Array iteration, ... ActiveRecord 85 The irb-based Rails application console 89 3.4 Summary 90 Ruby for Rails RUBY TECHNIQUES FOR RAILS DEVELOPERS DAVID A. BLACK MANNING Greenwich (74° w. long.)...

Ngày tải lên: 06/08/2014, 09:20

... Ruby version information ruby version A Rails application walk-through 45 Initializing the databases To create the database for the application, you need to initialize a database on your system. ... of the Rails framework ■ Details of how Rails handles incoming requests ■ Domain modeling and database creation ■ A complete sample Rails application 16 CHAPTER 1 How Ruby wo...

Ngày tải lên: 06/08/2014, 09:20

... its configuration data as potential Ruby data, easily brought to life with a YAML operation. Here, again, the worlds of programming and configuration melt into one another, thanks to the facilities ... Rails application console. You’ve already started using irb to test Ruby code snippets and to do quick cal- culations. Rails applications come complete with an irb-based console...

Ngày tải lên: 06/08/2014, 09:20

... between one model- ing system (the relational database) and another (the classes and instances and method-calls of Ruby) . The automatic creation of methods based on the names of database fields ... store application from chapter 2. Along the way, we’ll use selected features and components of the application as windows onto the inner workings of both Ruby and Rails and, of course, Ruby...

Ngày tải lên: 06/08/2014, 09:20

... inclu- sion of one or more partial views. We summon up the partial view at a particular place in the main or master template with a call to render . 16.2.1 Anatomy of a master template The best way ... works _on_ order editions _on_ order.map {|edition| edition.works }.flatten.uniq end Mapping that operation across all the editions on order returns one array of works for each edi...

Ngày tải lên: 06/08/2014, 09:20