document_view.xml

<?xml version="1.0"?>
<openerp>
<data>
    <!--Add model list field-->
    <record model="ir.ui.view" id="view_document_file_multiple_models_form">
      <field name="name">ir.attachment.multiple.models</field>
      <field name="model">ir.attachment</field>
      <field name="inherit_id" ref="document.view_document_file_form"/>
      <field name="arch" type="xml">
        <group string="Indexed Content" position="after">
          <group col="2" colspan="4">
            <field name="attachment_document_ids" nolabel="1">
              <tree string="AttachmentDocumentTree" create="false" version="7.0">
                <field name="res_model"/>
                <field name="res_id"/>
                <field name="res_name"/>
              </tree>
              <form string="AttachmentDocumentForm">
                <field name="res_model"/>
                <field name="res_id"/>
                <field name="res_name"/>
              </form>
            </field>
          </group>
        </group>
      </field>
    </record>
</data>
</openerp>