Ruby for Rails phần 9 pps

... the model and its associated entities for a next level of information. This information, in turn, might be used for in-house reports, richer on-screen information displays, or sales profiling. ... cosmetic. The consistent “Rubyness” of a Rails application makes for a consistent development experience: It’s easier to think in Ruby the whole time than it is to switch back and forth. (...

Ngày tải lên: 06/08/2014, 09:20

... 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.) vii PART ITHE RUBY/ RAILS LANDSCAPE ... RUBY/ RAILS LANDSCAPE 1 1 ■ How Ruby works 3 2 ■ How Rails works 33 3 ■ Ruby- informed Rails development 67 PART II RUBY BUILDING BLOCKS 93 4 ■ Objects and...

Ngày tải lên: 06/08/2014, 09:20

... in Ruby and shipped with Ruby) , lightTPD CGI Library CGI data processing routines Parses incoming form data Part of the Ruby standard library ERb "Embedded Ruby& quot; Templating system for ... extension (require it) ruby -rprofile version Show Ruby version information ruby version A Rails application walk-through 45 Initializing the databases To create the database fo...

Ngày tải lên: 06/08/2014, 09:20

... CHAPTER 3 Ruby- informed Rails development because of Ruby (Ruby doesn’t care), but because leaving the parentheses off is a standard Rails convention. The common idioms you use in Rails aren’t ... sent to I/O sockets, and so forth. It’s not uncommon for programs to define a method called send that conflicts with Ruby s built- in send method. Therefore, Ruby gives you an...

Ngày tải lên: 06/08/2014, 09:20

... the process is to install RubyGems itself. The RubyGems project is hosted by RubyForge. The homepage for RubyGems is http://rubyforge.org/projects/rubygems. Look for the Latest File Releases ... expression values 2 59 prints value of each expression 107 Rails application console 85, 89 90 , 290 starting a session 20 testing Ruby code with 20 verbose output from 290 iterators...

Ngày tải lên: 06/08/2014, 09:20

Ngày tải lên: 23/07/2014, 19:21

... SECTION: for the result. For example, here’s what that section looks like for this sample query: ;; ANSWER SECTION: ftp.redhat.com. 212 IN A 66.187.224.30 ftp.redhat.com. 212 IN A 2 09. 132.176.30 This ... 66.187.224.30 and 2 09. 132.176.30. Reverse lookups (finding host names for IP addresses) are also easy with dig. For example, to find the host name corresponding to the IP addre...

Ngày tải lên: 23/07/2014, 23:20

Ngày tải lên: 24/07/2014, 08:20

... system): Loading object 94 291 2 Loading object 94 2 892 Loading object 94 2882 The first suitcase off the plane is 94 2882 The cargo hold example shows how you can use an existing module for a new class. ... your Ruby programs. Sure enough, Ruby gives you a full suite of programming techniques for creat- ing objects on a batch or factory basis. You don’t have to define a separa...

Ngày tải lên: 06/08/2014, 09:20

... snippet informs us: Here's the inspect-string for 'self':#<C:0x40 193 c3c> And I'm a different variable called 'a' each time! Here's the inspect-string for 'self':#<C:0x40 193 c3c> And ... use an absolute path for a file. This may happen if you create a class or module with a name that’s similar to the name of a Ruby built-in...

Ngày tải lên: 06/08/2014, 09:20