Module: Para::FormBuilder::NestedForm

Defined in:
lib/para/form_builder/nested_form.rb

Instance Method Summary collapse

Instance Method Details

#allow_destroy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/para/form_builder/nested_form.rb', line 50

def allow_destroy?
  return false unless nested?

  nested_options = parent_object.nested_attributes_options
  relation = nested_options[nested_attribute_name]
  relation && relation[:allow_destroy]
end

#inverse_of?(field_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/para/form_builder/nested_form.rb', line 58

def inverse_of?(field_name)
  return false unless nested?

  reflection = parent_object.class.reflect_on_association(nested_attribute_name)
  reflection && (reflection.options[:inverse_of].to_s == field_name.to_s)
end

#nested? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/para/form_builder/nested_form.rb', line 65

def nested?
  nested_attribute_name.present? && options[:parent_builder]
end

#nested_attribute_name ⇒ Object 



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# File 'lib/para/form_builder/nested_form.rb', line 69

def nested_attribute_name
  options[:nested_attribute_name] ||=
    if (match = object_name.match(/\[(\w+)_attributes\]/))
      match[1]
    end
end

#nested_fields ⇒ Object

FIXME : When we have a nested field that maps to an STI model, the _id

field is passed instead of the relation, and the inverse_of
guard doesn't work



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# File 'lib/para/form_builder/nested_form.rb', line 8

def nested_fields
  @nested_fields ||= fields.reject do |field|
    inverse_of?(field.name)
  end
end

#nested_fields_partial_name ⇒ Object

Returns the partial name to be looked up for rendering used inside the nested fields partials, for the nested fields container and the remote nested fields partial.



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# File 'lib/para/form_builder/nested_form.rb', line 84

def nested_fields_partial_name
  :fields
end

#nested_resource_dom_id ⇒ Object 



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# File 'lib/para/form_builder/nested_form.rb', line 27

def nested_resource_dom_id
  return '' unless nested?

  @nested_resource_dom_id ||= [
    object.class.model_name.singular,
    (Time.now.to_f * 1000).to_i,
    object.id || "_new_#{nested_attribute_name}_id"
  ].join('-')
end

#nested_resource_name ⇒ Object 



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# File 'lib/para/form_builder/nested_form.rb', line 14

def nested_resource_name
  @nested_resource_name ||= begin
    name_method = Para.config.resource_name_methods.find do |method_name|
      object.respond_to?(method_name) && object.try(method_name).present?
    end

    name = (name_method && object.send(name_method)) || default_resource_name
    name = name.to_s.gsub(%r{(</p>|<br\s*/?>)}, ' ')

    template.sanitize(name, tags: [])
  end
end

#parent_object ⇒ Object 



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# File 'lib/para/form_builder/nested_form.rb', line 76

def parent_object
  nested? && options[:parent_builder].object
end

#remove_association_button(allow_destroy_if:) ⇒ Object 



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# File 'lib/para/form_builder/nested_form.rb', line 37

def remove_association_button(allow_destroy_if:)
  return '' unless allow_destroy?
  return '' unless !allow_destroy_if || allow_destroy_if.call(object)

  template.content_tag(:div, class: 'panel-btns') do
    template.link_to_remove_association(
      self, wrapper_class: 'form-fields', class: 'btn btn-danger btn-xs'
    ) do
      ::I18n.t('para.form.nested.remove')
    end
  end
end