Screencast: MongoDB und MongoMapper

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Resourcen:

• MongoDB
• Installing MongoDB on OS X
• MongoMapper
• Why I think Mongo is to Databases what Rails was to Frameworks
• Nifty Generators
• Full episode source code

Quellcode:

[bash] rails todo sudo rake gems:install script/generate nifty_layout script/generate nifty_scaffold project name:string —skip-migration script/generate nifty_scaffold task project_id:string name:string completed:boolean —skip-migration [/bash]

[ruby] # config/environment.rb config.gem “mongo_mapper”

# config/initializers/mongo_config.rb MongoMapper.database = “todo-#{Rails.env}”

# models/project.rb class Project include MongoMapper::Document key :name, String, :required => true key :priority, Integer many :tasks end

# models/task.rb class Task include MongoMapper::Document key :project_id, ObjectId key :name, String key :completed, Boolean belongs_to :project end

# script/console Project.all Project.all(:order => “name”) Project.all(:priority => 3) Project.all(:priority.gte => 2) Project.all(:priority.in => [2, 3]) [/ruby]

[html]

<%= f.label :priority %>
<%= f.select :priority, [1,2,3,4,5] %>

<%= f.label :project\_id %>
<%= f.collection\_select :project\_id, Project.all, :id, :name %>

\[/html\]