SimpleForm table wrapper

simple_form_table.rb

# place in RAILS_ROOT/config/initializers/

# This initializer will give a simple table-based form layout using SimpleForm
# There are two wrappers provided.
# simple_form_for(@obj, wrapper: "table") will make <TR><TH>label</TH><TD>input, help, and error</TD></TR>
# simple_form_for(@obj, wrapper: "table_just_cells") will skip the TR tags.

SimpleForm.setup do |config|
  # wrap all the common wrapper initialization in a lambda
  # I don't think you can just do `b.use :table_just_cells` inside :table, or I would have. this works well enough.
  table_just_cells_common = ->(b) do
    b.use :html5
    b.use :placeholder
    b.use :label, wrap_with: { tag: 'th' }
    b.wrapper tag: 'td', class: 'controls' do |ba|
      ba.use :input, wrap_with: { tag: 'div' }
      ba.use :error, wrap_with: { tag: 'span', class: 'help-inline' }
      ba.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
    end
  end

  config.wrappers :table_just_cells, tag: false do |b|
    table_just_cells_common.(b)
  end

  config.wrappers :table, tag: 'tr', class: 'simple-form-table-row', error_class: 'error' do |b|
    table_just_cells_common.(b)
  end
end