Class: DataTable::Column

Inherits:
Object
  • Object
show all
Defined in:
lib/data-table/column.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, description = '', opts = {}, &renderer) ⇒ Column

Returns a new instance of Column.



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# File 'lib/data-table/column.rb', line 7

def initialize(name, description = '', opts = {}, &renderer)
  @name = name
  @description = description
  @data_type = opts[:data_type]
  @help_text = opts[:help_text]
  @css_class = opts[:css_class]
  @attributes = opts[:attributes] || {}
  @width = opts[:width]
  @options = opts
  @display = true
  @index = 0
  @renderer = renderer
end

Instance Attribute Details

#attributes ⇒ Object

Returns the value of attribute attributes.



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# File 'lib/data-table/column.rb', line 5

def attributes
  @attributes
end

#css_class ⇒ Object

Returns the value of attribute css_class.



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# File 'lib/data-table/column.rb', line 5

def css_class
  @css_class
end

#display ⇒ Object

Returns the value of attribute display.



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# File 'lib/data-table/column.rb', line 5

def display
  @display
end

#index ⇒ Object

Returns the value of attribute index.



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# File 'lib/data-table/column.rb', line 5

def index
  @index
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/data-table/column.rb', line 4

def name
  @name
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/data-table/column.rb', line 5

def options
  @options
end

Instance Method Details

#css_class_names ⇒ Object 



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# File 'lib/data-table/column.rb', line 54

def css_class_names
  class_names = []
  class_names << @name.to_s
  class_names << @data_type.to_s
  class_names << @css_class
  class_names.compact.join(' ')
end

#custom_attributes ⇒ Object 



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# File 'lib/data-table/column.rb', line 50

def custom_attributes
  @attributes.map { |k, v| "#{k}='#{v}'" }.join ' '
end

#render_cell(cell_data, row = nil, row_index = 0, col_index = 0) ⇒ Object 



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# File 'lib/data-table/column.rb', line 21

def render_cell(cell_data, row = nil, row_index = 0, col_index = 0)
  @data_type ||= type(cell_data)

  html = []
  html << if @renderer && row
            case @renderer.arity
            when 1 then @renderer.call(cell_data).to_s
            when 2 then @renderer.call(cell_data, row).to_s
            when 3 then @renderer.call(cell_data, row, row_index).to_s
            when 4 then @renderer.call(cell_data, row, row_index, self).to_s
            when 5 then @renderer.call(cell_data, row, row_index, self, col_index).to_s
            end
          else
            cell_data.to_s
          end

  html << '</td>'
  # Doing this here b/c you can't change @css_class if this is done before the renderer is called
  "<td class='#{css_class_names}' #{custom_attributes}>" + html.join
end

#render_column_header ⇒ Object 



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# File 'lib/data-table/column.rb', line 42

def render_column_header
  header = ["<th class='#{css_class_names}' #{custom_attributes}"]
  header << "title='#{@help_text}' " if @help_text
  header << "style='width: #{@width}'" if @width
  header << ">#{@description}</th>"
  header.join
end

#type(data) ⇒ Object

Set a CSS class name based on data type For backward compatability, ‘string’ is renamed to ‘text’ For convenience, all Numerics (e.g. Integer, BigDecimal, etc.) just return ‘numeric’



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# File 'lib/data-table/column.rb', line 65

def type(data)
  if data.is_a? Numeric
    'numeric'
  elsif data.is_a? String
    'text'
  else
    data.class.to_s.downcase
  end
end