Datagrid

Ruby library that helps you to build and represent table-like data with:

• Customizable filtering
• Columns
• Sort order
• Localization
• Export to CSV

ORM Support

• ActiveRecord
• Mongoid
• MongoMapper
• Array (slow but possible)

Create an issue if you want more.

Live Demo

Datagrid DEMO application is available live! Demo source code.

Example

In order to create a grid:

class SimpleReport

  include Datagrid

  scope do
    User.includes(:group)
  end

  filter(:category, :enum, :select => ["first", "second"])
  filter(:disabled, :xboolean)
  filter(:group_id, :integer, :multiple => true)
  filter(:logins_count, :integer, :range => true)
  filter(:group_name, :string, :header => "Group") do |value|
    self.joins(:group).where(:groups => {:name => value})
  end

  column(:name)
  column(:group, :order => "groups.name") do |user|
    user.name
  end
  column(:active, :header => "Activated") do |user|
    !user.disabled
  end

end

Basic grid api:

report = SimpleReport.new(
        :group_id => [1,2], :from_logins_count => 1,
        :category => "first",
        :order => :group,
        :descending => true
)

report.assets # => Array of User instances:
              # SELECT * FROM users WHERE users.group_id in (1,2) AND users.logins_count >= 1 AND users.category = 'first' ORDER BY groups.name DESC

report.header # => ["Name", "Group", "Activated"]
report.rows   # => [
              #      ["Steve", "Spammers", false],
              #      [ "John", "Spoilers", false],
              #      ["Berry", "Good people", true]
              #    ]
report.data   # => [ header, *rows]

report.to_csv # => Yes, it is

Grid DSL

In order to create a report, you need to define:

• scope of objects to look through
• filters that will be used to filter data
• columns that should be displayed and sortable (if possible)

Scope

Default scope of objects to filter and display. In common case it is ActiveRecord::Base (or any other supported ORM) subclass with some generic scopes like:

scope do
  User.includes(:group)
end

More about scope

Filters

Each filter definition consists of:

• name of the filter
• type that will be used for value typecast
• conditions block that applies to defined scope
• additional options

Datagrid supports different type of filters including:

• text
• integer
• float
• date
• datetime
• boolean
• xboolean - the select of "yes", "no" and any
• enum
• string
• dynamic

More about filters

Columns

Each column is represented by name and code block to calculate the value.

column(:activated, :header => "Active", :order => "activated", :after => :name) do
  self.activated?
end

Some formatting options are also available. Each column is sortable.

More about columns

Front end

Using Generator

Datagrid has a builtin generator:

rails g datagrid:scaffold skills

That gives you some code to play with out of the box:

create  app/grids/skills_grid.rb
create  app/controllers/skills_controller.rb
create  app/views/skills/index.html.erb
route  resources :skills
insert  app/assets/stylesheet/application.css

Customize Built-in partials

In order to get a control on datagrid built-in partials run:

rake datagrid:copy_partials

Advanced frontend

All advanced frontend things are described in:

Frontend section on wiki

Self-Promotion

Like datagrid?

Follow the repository on GitHub.

Read author blog.