WiceGrid 3.6.0.pre4 examples

# encoding: utf-8
class NoRecordsController < ApplicationController
  def index
    @tasks_grid  = initialize_grid(Task,  conditions: ['title = ?', 'a title that does not exist'])
    @tasks_grid2 = initialize_grid(Task,  conditions: ['title = ?', 'a title that does not exist'])
    @tasks_grid3 = initialize_grid(Task,  conditions: ['title = ?', 'a title that does not exist'])
  end
end

.well
  %h2= current_page_title
  %p
    What if there no records to render in a grid?
    There are three ways to define what to show in this case:
    %ul
      %li
        %code blank_slate
        with a block. This looks like a column definition, but the value
        returned by the block is rendred when there are no records.
      %li
        %code blank_slate
        whithout a block, but with one string argument.
      %li
        %code blank_slate
        with parameter
        %code partial:  "partial_name"
        which defines a partial to render.

= show_code

.example1= render   'grid1'
.example2= render   'grid2'
.example3= render   'grid3'

<%= grid(@tasks_grid) do |g|

  g.blank_slate  do
    content_tag :div, "No records found", class: 'well'
  end

  g.column name:  'ID', attribute: 'id'

  g.column name:  'Title', attribute: 'title'

end -%>

<%= grid(@tasks_grid3) do |g|

  g.blank_slate partial:  "empty_grid"

  g.column name:  'ID', attribute: 'id'

  g.column name:  'Title', attribute: 'title'

end -%>

<%= grid(@tasks_grid2) do |g|

  g.blank_slate content_tag(:div, "No records found", class: 'well')

  g.column name:  'ID', attribute: 'id'

  g.column name:  'Title', attribute: 'title'

end -%>

.well No records found