Datagrid

A really mighty and flexible ruby library that generates reports including admin panels, analytics and data representation:

• Filtering
• Columns
• Sort order
• Localization
• Export to CSV

• ActiveRecord
• Mongoid
• MongoMapper
• Sequel
• Array (in-memory data of smaller scale)

Create an issue if you want more.

1. Expressive DSL complements OOD instead of replacing it.
2. Extensible in every way while providing a lot of defaults.
3. If your ORM supports that, datagrid also supports that!

• Readme - this read-me for basic information.
• Wiki - general reference on how to use the gem.
• Rdoc - API reference.

Datagrid DEMO application is available live! Demo source code.

In order to create a grid:

class UsersGrid

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

end

Basic grid api:

report = UsersGrid.new(
  group_id: [1,2],
  logins_count: [1, nil],
  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

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)

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

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 - selection of the given values
• string
• dynamic - build dynamic SQL condition

More about filters

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

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

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

rake datagrid:copy_partials

All advanced frontend things are described in:

Frontend section on wiki

If you have a question of any kind, just make an issue and describe your problem in details.

If you are interested in contributing to this project, please follow the instructions here.

Like datagrid?

Follow the repository on GitHub.

Read author blog.