table builder: add default html ids and css classes.

* Add default IDs for <table> tags (ex: <table id="artists-table">).
* Add default CSS classes for <th> and <td> tags (ex: <td class="name-column">).

app/logical/table_builder.rb

@@ -10,6 +10,12 @@ class TableBuilder
 
       @name = name || attribute
       @name = @name.to_s.titleize unless @name.kind_of?(String)
+
+      if @name.present?
+        column_class = "#{@name.parameterize.dasherize}-column"
+        @header_attributes[:class] = "#{column_class} #{@header_attributes[:class]}".strip
+        @body_attributes[:class] = "#{column_class} #{@body_attributes[:class]}".strip
+      end
     end
 
     def value(item, i, j)
@@ -30,6 +36,11 @@ class TableBuilder
     @items = items
     @columns = []
     @table_attributes = { class: "striped", **table_attributes }
+
+    if items.respond_to?(:model_name)
+      @table_attributes[:id] ||= "#{items.model_name.plural.dasherize}-table"
+    end
+
     yield self if block_given?
   end