Cells
As explained in dedicated page View Models (Cells), a cell is an object that represent a fragment of your UI.
In order to define a cell, you need to create a class that inherits from Decidim::ViewModel in your module.
Cells classes are located in the app/cells/decidim/<my_module> directory, and named: <my_cell>_cell.rb.
For example, if you want to create a cell that renders a simple text:
# frozen_string_literal: true
# app/cells/decidim/my_module/my_cell_cell.rb
module Decidim
  module MyModule
    class MyCellCell < Decidim::ViewModel
      def show
        render if condition?
      end
      private
      def condition?
        true
      end
    end
  end
endThen, you can render the cell in your view:
<%= cell("decidim/my_module/my_cell") =>