acc_actu_views.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo>
    <data>

        <record id="acc_actu_form_view" model="ir.ui.view">
            <field name="name">acc_actu.form</field>
            <field name="model">acc.actu</field>
            <field name="arch" type="xml">
                <form string="Actualité">
                    <sheet>
                        <div class="oe_title">
                            <label for="name" />
                            <h1>
                                <field name="name" placeholder="Titre" />
                            </h1>
                        </div>
                        <group>
                            <group>
                                <field name="operation_id" />
                            </group>
                            <group>
                                <field name="date_actu" />
                            </group>
                        </group>
                        <group>
                            <field name="content_html" />
                        </group>
                    </sheet>
                </form>
            </field>
        </record>

        <record id="acc_actu_tree_view" model="ir.ui.view">
            <field name="name">acc_actu.tree</field>
            <field name="model">acc.actu</field>
            <field name="arch" type="xml">
                <tree string="Actualités">
                    <field name="name" />
                    <field name="operation_id" />
                    <field name="date_actu" />
                </tree>
            </field>
        </record>

        <record id="acc_actu_act_window" model="ir.actions.act_window">
            <field name="name">Actualités</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">acc.actu</field>
            <field name="view_mode">tree,form</field>
            <field name="help" type="html">
                <p class="oe_view_nocontent_create">
                    Créer une nouvelle actualité
                </p>
            </field>
        </record>

        <menuitem
            id="acc_actu_menu"
            name="Actualités"
            parent="acc_operation.menu_acc_config"
            sequence="10"
            action="acc_actu_act_window"
        />

    </data>
</odoo>