I need to show attachments in kanban view.
<record id="view_document_ir_attachment_kanban" model="ir.ui.view">
<field name="name">ir.attachment.kanban</field>
<field name="model">ir.attachment</field>
<field name="arch" type="xml">
<kanban create="false">
<field name="name" />
<field name="datas" />
<templates>
<t t-name="kanban-box">
<div style="width: 100px;">
<field name="name" />
<field name="data"/>
</div>
</t>
</templates>
</kanban>
</field>
</record>
Here field data is the binary field.
\addons\document\document_view.xml after line 256. add this
<menuitem name="Documents" id="menu_document_doc" parent="knowledge.menu_document" sequence="0"/>
<menuitem name="Documents" action="action_document_file_form" id="menu_document_files" parent="menu_document_doc" sequence="0"/>