DatagridDemo

Developer ↑ ↓	Project ↑ ↓	Company ↑ ↓	Report hours ↑ ↓
Jeanne Witting	doloribus hic corporis	Microsoft	90.0
Jewell Kreiger	doloribus hic corporis	Microsoft	75.0
Jewell Swaniawski	doloribus hic corporis	Microsoft	92.0
Joelle Hodkiewicz	doloribus hic corporis	Microsoft	83.0
Johnny Spinka	doloribus hic corporis	Microsoft	91.0
Jon Lindgren	doloribus hic corporis	Microsoft	79.0
Juliana Hauck	doloribus hic corporis	Microsoft	93.0
Kaye Greenfelder	doloribus hic corporis	Microsoft	35.0
Kellie Cassin	doloribus hic corporis	Microsoft	84.0
Lesia Hyatt	doloribus hic corporis	Microsoft	53.0
Li Considine	doloribus hic corporis	Microsoft	73.0
Lillie Hamill	doloribus hic corporis	Microsoft	39.0
Lynell Stamm	doloribus hic corporis	Microsoft	50.0
Malvina Zulauf	doloribus hic corporis	Microsoft	87.0
Marna Ritchie	doloribus hic corporis	Microsoft	73.0
Maryanna Medhurst	doloribus hic corporis	Microsoft	53.0
Micheal Jenkins	doloribus hic corporis	Microsoft	76.0
Milagros Lemke	doloribus hic corporis	Microsoft	33.0
Mi Prosacco	doloribus hic corporis	Microsoft	100.0
Myriam Von	doloribus hic corporis	Microsoft	55.0
Myrtle O'Conner	doloribus hic corporis	Microsoft	47.0
Nelson Leannon	doloribus hic corporis	Microsoft	75.0
Ophelia Hermiston	doloribus hic corporis	Microsoft	67.0
Palmira Fay	doloribus hic corporis	Microsoft	67.0
Pearlie McGlynn	doloribus hic corporis	Microsoft	76.0

Grid:

class TimeEntriesGrid < BaseGrid

  #
  # 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_for @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