vertical-cooperative/easy_my_coop/views/operation_request_view.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record id="operation_request_tree" model="ir.ui.view">
        <field name="name">operation.request.tree</field>
        <field name="model">operation.request</field>
        <field name="arch" type="xml">
            <tree string="Operation requests"
                  colors="green:state in ('approved'); blue:state in ('draft');grey: state in ('done')">
                <field name="request_date"/>
                <field name="partner_id"/>
                <field name="operation_type"/>
                <field name="quantity"/>
                <field name="user_id"/>
                <field name="state"/>
            </tree>
        </field>
    </record>

    <record id="operation_request_form" model="ir.ui.view">
        <field name="name">operation.request.form</field>
        <field name="model">operation.request</field>
        <field name="arch" type="xml">
            <form string="Operation request">
                <header>
                    <button string="Submit" type="object"
                            name="submit_operation" states="draft"/>
                    <button string="Approve" type="object"
                            name="approve_operation" states="waiting"/>
                    <button string="Refuse" type="object"
                            name="refuse_operation" states="waiting"/>
                    <button string="Cancel" type="object"
                            name="cancel_operation"
                            states="draft,waiting,approved"/>
                    <button string="Draft" type="object" name="reset_to_draft"
                            states="waiting,cancelled"/>
                    <button string="Execute" type="object"
                            name="execute_operation" states="approved"/>
                    <field name="state" widget="statusbar"
                           statusbar_visible="draft,done,cancelled,refused"
                           statusbar_colors='{"draft":"grey","done":"green","cancelled":"orange","refused":"red"}'/>
                </header>
                <sheet>
                    <group>
                        <group>
                            <field name="request_date"
                                   attrs="{'readonly':[('state','!=','draft')]}"/>
                            <field name="effective_date"
                                   attrs="{'readonly':[('state','!=','draft')]}"/>
                            <field name="operation_type"
                                   attrs="{'readonly':[('state','!=','draft')]}"/>
                            <field name="receiver_not_member"
                                   attrs="{'invisible':[('operation_type','!=','transfer')]}"/>
                            <field name="partner_id"
                                   options="{'no_create':True}"
                                   attrs="{'readonly':[('state','!=','draft')]}"/>
                            <field name="partner_id_to"
                                   options="{'no_create':True}"
                                   attrs="{'invisible':['|',('operation_type','!=','transfer'), ('receiver_not_member','=',True)]}"/>
                        </group>
                        <group>
                            <field name="user_id"/>
                            <field name="share_product_id"
                                   attrs="{'readonly':[('state','!=','draft')]}"
                                   widget="selection"/>
                            <field name="share_short_name" readonly="True"/>
                            <field name="share_to_product_id"
                                   attrs="{'invisible':[('operation_type','!=','convert')],'required':[('operation_type','=','convert')],'readonly':[('state','!=','draft')]}"
                                   widget="selection"/>
                            <field name="share_to_short_name" readonly="True"/>
                            <field name="quantity"
                                   attrs="{'readonly':[('state','!=','draft')]}"/>
                            <field name="share_unit_price" readonly="True"/>
                            <field name="subscription_amount" readonly="True"/>
                        </group>
                    </group>
                    <group>
                        <field name="subscription_request"
                               attrs="{'invisible':['|',('operation_type','!=','transfer'),('receiver_not_member','=',False)]}"
                               context="{'default_is_operation': True, 'default_ordered_parts':quantity,'default_share_product_id': share_product_id, 'default_source':'operation'}">
                            <tree>
                                <field name="name"/>
                                <field name="birthdate"/>
                                <field name="phone"/>
                                <field name="email"/>
                                <field name="iban"/>
                                <field name="state" invisible="True"/>
                            </tree>
                            <form string="Subscription Requests">
                                <sheet>
                                    <group>
                                        <group>
                                            <field name="name"/>
                                            <field name="firstname"/>
                                            <field name="lastname"/>
                                            <field name="birthdate"/>
                                            <field name="gender"/>
                                            <field name="email"/>
                                            <field name="phone"/>
                                            <field name="iban"/>
                                        </group>
                                        <group>
                                            <field name="address"/>
                                            <field name="zip_code"/>
                                            <field name="city"/>
                                            <field name="country_id"/>
                                            <field name="lang"/>
                                            <field name="validated"/>
                                            <field name="skip_control_ng"/>
                                            <field name="ordered_parts"
                                                   invisible="True"/>
                                            <field name="source"
                                                   invisible="True"/>
                                            <field name="state"
                                                   invisible="True"/>
                                            <field name="share_product_id"
                                                   invisible="True"/>
                                        </group>
                                    </group>
                                </sheet>
                            </form>
                        </field>
                    </group>
                </sheet>
            </form>
        </field>
    </record>

    <record id="operation_request_action" model="ir.actions.act_window">
        <field name="name">Operation request</field>
        <field name="res_model">operation.request</field>
        <field name="view_type">form</field>
        <field name="view_id" ref="operation_request_tree"/>
    </record>

</odoo>