Module: Gridion::GridHelper

Defined in:
lib/gridion/grid_helper.rb

Defined Under Namespace

Classes: GridBinding

Instance Method Summary collapse

Instance Method Details

#grid(collection, options = {}, &block) ⇒ Object 



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# File 'lib/gridion/grid_helper.rb', line 36

def grid(collection, options={}, &block)
  grid_binding=GridBinding.new

  initialize_grid_binding(grid_binding)

  content=with_output_buffer {block.call(grid_binding) } if block_given?

  # we need to initialize the procs in the helper context otherwise other helpers inside the proc object (e.g. link_to) wont work

  
  options={:actions=>[:edit, :delete]}.merge(options).with_indifferent_access
  
  if %w(ol ul).include?(options[:table_tag])
    options[:table_header_tag]||="span"
    options[:table_row_tag]||="li"
    options[:table_cell_tag]||="span"
  end
  
  options[:table_tag]||="table"
  options[:table_header_tag]||="th"
  options[:table_header_wrapper_tag]="thead"
  options[:table_body_wrapper_tag]="tbody"
  options[:table_row_tag]||="tr"
  options[:table_cell_tag]||="td"
  options[:paginate]=true unless options.has_key?(:paginate)

  
  if collection.blank?
    if options[:render_empty_grid]
      grid_binding.header.call(options[:object_class], collection, options)
      grid_binding.filter.call(collection.first.class, collection, options) if grid_binding.filter.present?
      grid_binding.footer.call(options[:object_class], collection, options)
    end
  else
    grid_binding.header.call(collection.first.class, collection, options)
    grid_binding.filter.call(collection.first.class, collection, options) if grid_binding.filter.present?

    collection.each_with_index {|object, i| grid_binding.row.call(object.class, object, options.merge(:row_is_even=>i%2==1)) } #index starts from 0 
    
    if collection.respond_to?(:current_page) && defined?(Kaminari) # we assume only Kaminari is supported
      grid_binding.paginator.call(collection.first.class, collection, options) if collection.num_pages > 1 && options[:paginate]==true

    end
      
    
    grid_binding.footer.call(collection.first.class, collection, options)

  end

  return nil

end

#initialize_grid_binding(grid_binding) ⇒ Object 



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# File 'lib/gridion/grid_helper.rb', line 88

def initialize_grid_binding(grid_binding)
  with_output_buffer do
    grid_binding.header do |klass, collection, options={}|
      table_tag = options[:table_tag]||"table"
      table_row_tag=options[:table_row_tag]||"tr"
      table_header_tag=options[:table_header_tag]||"th"
      table_header_wrapper_tag=options[:table_header_wrapper_tag]||"thead"
      table_body_wrapper_tag=options[:table_body_wrapper_tag]||"tbody"
      skip_field_class=options[:skip_field_class]||false
      field_class_prefix=options[:field_class_prefix]||""
      table_classes=[options[:class]].flatten.compact
      safe_concat("<#{table_tag} class=\"#{klass.name.downcase} #{table_classes.join(' ')}\">")
      
      columns=options[:columns]||klass.column_names
      safe_concat("<#{table_header_wrapper_tag}>")  if table_header_wrapper_tag.present?
      safe_concat("<#{table_row_tag} class=\"header\">")
      
      (columns).each do |col|
        col_label=klass.human_attribute_name(col)
        col_label = sort_link(options[:q], col, col_label) if defined?(:sort_link) && options.has_key?(:q) && options[:q].present?  
        safe_concat("<#{table_header_tag} class=\"header_cell #{field_class_prefix + '_' + col.to_s.parameterize.underscore unless skip_field_class}\">#{col_label}</#{table_header_tag}>")
      end
      safe_concat("<#{table_header_tag} class=\"actions\">#{I18n.t("gridion.headers.actions", "Actions")}</#{table_header_tag}>") unless options[:actions].blank?
      safe_concat("<#{table_header_tag} class=\"children\"></#{table_header_tag}>") if options.has_key?(:children)
      safe_concat("</#{table_row_tag}>")
      safe_concat("</#{table_header_wrapper_tag}>")  if table_header_wrapper_tag.present?
      safe_concat("<#{table_body_wrapper_tag}>")  if table_body_wrapper_tag.present?
    end

    grid_binding.row do  |klass, object, options={}|
      table_tag = options[:table_tag]||"table"
      table_row_tag=options[:table_row_tag]||"tr"
      table_cell_tag=options[:table_cell_tag]||"td"
      skip_field_class=options[:skip_field_class]||false
      field_class_prefix=options[:field_class_prefix]||""
      
      object_list=
        if options.has_key?(:parent)
          ([options[:parent]] + [object]).flatten 
        else
          [object]
        end

      if options.has_key?(:namespace)
        namespaces=options[:namespace]
        object_list = ([namespaces] + object_list).flatten
      end
        
      result =""
      aux_columns={}
      aux_columns=options[:aux_columns].with_indifferent_access if options.has_key?(:aux_columns)
      
      formats=(options[:formats]||{}).with_indifferent_access
      actions=options[:actions]
      columns=options[:columns]||klass.column_names

      row_id="#{klass.name}_#{object.id}"
      
      result << "<#{table_row_tag} id=\"#{row_id}\" data-id=\"#{object.id}\" class=\"#{options[:row_is_even] ? 'even' : 'odd'}\">"
      (columns).each do |col|
        if aux_columns[col].present?
          value=aux_columns[col].call(object, options)
        else
          value=object.send(col)
          if formats.has_key?(col)
        
            if formats[col]==:currency
              value=number_to_currency(value) 
            elsif formats[col].kind_of?(Hash)
              if formats[col].has_key?(:date)
                value=value.try(:to_date).try(:to_s, formats[col][:date])
              elsif formats[col].has_key?(:datetime)
                value=value.try(:to_s, formats[col][:datetime])
              end
            elsif formats[col].kind_of?(Proc)
              # use hook
              value=formats[col].call(value)
            end
          end
        end
        result << "<#{table_cell_tag} #{"class=\"#{field_class_prefix + '_' + col}\"" unless skip_field_class}>#{value}</#{table_cell_tag}>"
      end
        

      if actions.present?
        result << "<#{table_cell_tag} class=\"actions\">"
        if actions.kind_of?(Proc)
          result << actions.call(object, options)
        elsif actions.kind_of?(Array)
          result << "#{link_to I18n.t("gridion.actions.show", default: "Show"), object_list, :class=>%w{action_link show}}" if actions.include?(:show)
          result << "#{link_to I18n.t("gridion.actions.edit", default: "Edit"), [:edit]+ object_list, :class=>%w{action_link edit}}" if actions.include?(:edit)
          result << "#{link_to I18n.t("gridion.actions.delete", default: "Delete"), object_list, :class=>%w{action_link delete}, :method=>:delete, :confirm=>'Are you sure?'}"  if actions.include?(:delete)
        elsif actions.kind_of?(Hash)
          result << "#{link_to I18n.t("gridion.actions.show", default: "Show"), object_list, {:class=>%w{action_link show}}.merge(actions[:show]||{})}" if actions.has_key?(:show)
          result << "#{link_to I18n.t("gridion.actions.edit", default: "Edit"), [:edit]+ object_list, {:class=>%w{action_link edit}}.merge(actions[:edit]||{})}" if actions.include?(:edit)
          result << "#{link_to I18n.t("gridion.actions.delete", default: "Delete"), object_list, {:class=>%w{action_link delete}, :method=>:delete, :confirm=>'Are you sure?'}.merge(actions[:delete]||{})}"  if actions.include?(:delete)
        end
        result << "</#{table_cell_tag}>"
      end
      
      if options.has_key?(:children)
        result << "<#{table_cell_tag} class=\"children\">"
        children_hash=
          if options[:children].kind_of?(Array)
            options[:children].each_with_object({}) {|child, h| h[child]=child.to_s.singularize.classify.constantize.model_name.human.pluralize }
          else
            options[:children].keys.each_with_object({}) {|child, h| h[child]=options[:children][child]||child.to_s.singularize.classify.constantize.model_name.human.pluralize} 
          end

        children_hash.keys.each do |child|
          label= children_hash[child]
          label||= child.to_s.singularize.classify.constantize.model_name.human.pluralize
          result << link_to(label, [namespaces, object, child].flatten, :class=>"child_link #{child.to_s}")
        end
      
        result << "</#{table_cell_tag}>"
      end

      
      result << "</#{table_row_tag}>"
      safe_concat(result)

    end

    grid_binding.paginator do |klass, collection, options|
      table_tag = options[:table_tag]
      table_row_tag=options[:table_row_tag]
      table_cell_tag=options[:table_cell_tag]
      paginate_param_name=options[:paginate_param_name]||"page"
      
      colspans=(options[:columns]||klass.column_names).count + 1 + (options[:actions].blank? ? 0 : 1) #TODO: change this to number of action columns
      result = ""
      result << "<#{table_row_tag} class=\"paginator\">"
      result << "<#{table_cell_tag} colspan=\"#{colspans}\">"
      result << paginate(collection, param_name: paginate_param_name)
      result << "</#{table_cell_tag}>"
      result << "</#{table_row_tag}>"
      safe_concat(result)
    end

    grid_binding.footer do |klass, collection, options={}|
      table_tag = options[:table_tag]
      table_row_tag=options[:table_row_tag]
      table_cell_tag=options[:table_cell_tag]
      table_body_wrapper_tag=options[:table_body_wrapper_tag]
      safe_concat("</#{table_body_wrapper_tag}>")  if table_body_wrapper_tag.present?
      safe_concat("</#{table_tag}>")
    end
    

  end
end