gistfile1.rb

ExportHelpers.module_eval do;
    def generate_labels(id)
        obj = resolve_references(Resource.to_jsonmodel(id), ['tree', 'repository'])
        labels = ASpaceExport.model(:labels).from_resource(JSONModel(:resource).new(obj))
        ASpaceExport::stream(labels)
    end
end

class LabelModel < ASpaceExport::ExportModel
    model_for :labels

    include JSONModel

def headers
    %w(Resource\ Title  Resource\ Identifier Parents Restrictions Box\ Number)
end

def rows
    @rows.uniq{|r| r['container']+r['parents']}.map {|r| [self.title, self.identifier, r['parents'], r['restrictions'], r['container']]}
end

def get_parents(ref, parents)

    component = ArchivalObject.to_jsonmodel(JSONModel(:archival_object).id_for(ref))
    if component['level']!='file' && component['level']!='item'
        title = component['level'].capitalize + ' ' + component['component_id'] + ' ' + component['display_string']
    else
        title = component['display_string']
    end
    parents << title

    if component['parent']
        get_parents(component['parent']['ref'], parents)
    end

    parents.reverse.join(' > ')

end


def generate_label_rows(objects)

    rows = []

    objects.each do |obj|
        if obj.parent && obj.instances
            parents = get_parents(obj.parent['ref'], [])
            restrictions = []
            if obj.notes
                obj.notes.each do |n|
                    if n['type'] = 'accessrestrict'
                        restrictions = 'Restricted material'
                    end
                end
                restrictions
            end
            restrictions
        end

        instances = obj.instances
        instances.each do |i|
            c = i['container']
            next unless c
            if c['type_1'] && c['indicator_1']
                container = "#{c['type_1'].capitalize} #{c['indicator_1']}"
                crow = {
                    'container' => container,
                    'parents' => parents,
                    'restrictions' => restrictions
                }
            end
            rows << crow
        end
        rows.push(*generate_label_rows(obj.children))

    end

    rows
end
end