Ruby will_paginate usage

The new version of will_paginate has abandoned this practice and switched to the gem method. This article builds an application named foobar to understand the usage of will_paginate.

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C: \> rails foobar-d mysql

C: \> cd foobar

C: \ foobar> ruby script/generate scaffold article title: string content: text

In this case, set the database (C: \ foobar \ config \ database. yml) and make sure that the relevant database has been created.

C: \ foobar> rake db: migrate

C: \ foobar> ruby script/server

Now, you can browse http: // localhost: 3000/articles and add some data (such as 10) to prepare for paging.

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The old version of will_paginate in the form of plugin does not need to be explicitly loaded in the rails program, because the init under the plug-in directory will be automatically executed when rails is started. rb file, and the new version of will_pagiante adopts the gem form, there is no such mechanism, so you need to explicitly load in the rails program:

# C: \ foobar \ config \ environment. rb
Rails: Initializer. run do | config |
Config. gem 'mislav-will_paginate',: version => '~> 2.3.2 ',: lib => 'will _ paginate ',
: Source => 'HTTP: // gems.github.com'
End

Restart WEBrick and run the following command to install the corresponding gem:

C: \ foobar> rake gems: install

The installation is complete.

Add the following code to modify the index method of the controller:

# C: \ foobar \ app \ controllers \ articles_controller.rb
@ Articles = Article. paginate: page => params [: page],: per_page => 2

Modify the corresponding template file and add code similar to the following:

# C: \ foobar \ app \ views \ articles \ index.html. erb
<% = Will_paginate @ articles %>

Restart WEBrick again, And Then browse to view the page effect.

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Will_paginate latest document: http://github.com/mislav/will_paginate/wikis