DatagridDemo

Developer ↑ ↓	Project ↑ ↓	Company ↑ ↓	Report hours ↑ ↓
Johnny Spinka	suscipit consectetur beatae	Google	42.0
Rebecca Rempel	eum amet quia	Google	42.0
Grace Kris	eum amet quia	Google	42.0
Treena Wolf	repudiandae officiis qui	Google	42.0
Myrtle O'Conner	saepe hic temporibus	Microsoft	42.0
Eleonore Wisozk	vitae eum pariatur	Google	42.0
Jewell Swaniawski	eum amet quia	Google	42.0
Marna Ritchie	odio velit repudiandae	Apple	42.0
Grace Kris	vitae eum pariatur	Google	42.0
Arnita Smith	animi aperiam tenetur	Google	42.0
Nelson Leannon	animi aperiam tenetur	Google	42.0
Jeanne Witting	eum amet quia	Google	42.0
Jamison Hagenes	quibusdam sed sit	Apple	42.0
Elida Zulauf	eum amet quia	Google	42.0
Clifton Hintz	saepe hic temporibus	Microsoft	42.0
Claudette Hagenes	quibusdam sed sit	Apple	41.0
Mi Prosacco	eum amet quia	Google	41.0
Tamika Cronin	quibusdam sed sit	Apple	41.0
Reinaldo Heidenreich	vitae eum pariatur	Google	41.0
Penney Schowalter	odio velit repudiandae	Apple	41.0
Terisa Ruecker	quibusdam sed sit	Apple	41.0
Myrtle O'Conner	perspiciatis totam perferendis	Apple	41.0
Myriam Von	vitae eum pariatur	Google	41.0
Nelson Leannon	doloribus hic corporis	Microsoft	41.0
Imelda Heidenreich	animi aperiam tenetur	Google	41.0

Grid:

class TimeEntriesGrid < ApplicationGrid

  #
  # Scope
  #

  scope do
    User.select(
      "users.name",
      "projects.name as project_name",
      "accounts.name as account_name",
      "sum(time_entries.hours) as report_hours"
    ).joins(
      time_entries: {project: :account}
    ).group("projects.name", "users.name", "accounts.name").
    order("users.name")
  end


  #
  # Filters
  #

  filter(
    :project_id, :enum,
    :select => :project_id_select,
    :multiple => true,
    :include_blank => false
  ) do |value|
    self.where(:time_entries => {:project_id => value})
  end


  filter(
    :year, :enum,
    :select => :year_select,
    :include_blank => false,
    :default => lambda {Date.today.year}
  ) do |value|
    self.where([
      "extract(year from time_entries.date) = ?",
      value.to_i
    ])
  end

  filter(
    :month, :enum,
    :select => :month_select,
    :include_blank => false,
    :default => lambda {Date.today.month}
  ) do |value|

    self.where([
      "extract(month from time_entries.date) = ?",
      value.to_i
    ])
  end


  #
  # Columns
  #

  column(:user_name, :header => "Developer", :order => "users.name") do
    self.name
  end
  column(:project_name, :header => "Project", :order => "projects.name")
  column(
    :account_name,
    :header => "Company",
    :order => "accounts.name",
  ) do |model|
    format(model.account_name) do
      render :partial => "time_entries/company", :locals => {:model => model}
    end
  end

  column(:report_hours, order: "sum(time_entries.hours)")

  protected

  def year_select
    TimeEntry.all.any? ? (TimeEntry.minimum(:date).year..TimeEntry.maximum(:date).year) : []
  end
  def month_select
    Date::MONTHNAMES[1..12].enum_for(:each_with_index).collect {|name, index| [name, index + 1]}
  end

  def project_id_select
    Project.all.map {|p| [p.name, p.id]}
  end
end

Controller:

class TimeEntriesController < ApplicationController

  def index
    @time_entries_grid = TimeEntriesGrid.new(params[:g]) do |scope|
      scope.page(params[:page] )
    end
  end
end

View:

.grid-index-grid
  %div{class: 'overflow-x-auto p-4'}
    = datagrid_form_with model: @time_entries_grid, url: time_entries_path
    %br/
    = datagrid_table(@time_entries_grid)
    = paginate @time_entries_grid.assets, window: 2
  %div
    = render :partial => "shared/source", :object => @time_entries_grid