vertical-cooperative/easy_my_coop_loan/views/loan_line_view.xml

<odoo>
    <record id="action_loan_issue_lines" model="ir.actions.act_window">
        <field name="name">Loans</field>
        <field name="res_model">loan.issue.line</field>
        <field name="view_type">form</field>
        <field name="view_mode">tree,form</field>
    </record>

    <record id="loan_issue_line_view_tree" model="ir.ui.view">
        <field name="name">loan_issue_line_view_tree</field>
        <field name="model">loan.issue.line</field>
        <field name="arch" type="xml">
            <tree string="Loans">
                <field name="name"/>
                <field name="loan_issue_id"/>
                <field name="partner_id"/>
                <field name="quantity"/>
                <field name="face_value"/>
                <field name="amount"/>
                <field name="date"/>
                <field name="state"/>
            </tree>
        </field>
    </record>

    <record id="view_loan_issue_line_form" model="ir.ui.view">
        <field name="name">loan.issue.line.form</field>
        <field name="model">loan.issue.line</field>
        <field name="arch" type="xml">
            <form string="Loan">
                <header>
                    <button name="action_validate" string="Validate"
                            type="object" states="draft"/>
                    <button name="action_request_payment"
                            string="Request Payment"
                            type="object" states="subscribed"/>
                    <button name="action_cancel" string="Cancel" type="object"
                            states="draft,subscribed,waiting"
                            confirm="Are you sure you want to cancel this loan subscription ?"/>
                    <button name="action_draft" string="Set to draft"
                            type="object" states="cancelled"/>
                    <button name="action_paid" string="Paid"
                            type="object" states="waiting"/>
                    <field name="state" widget="statusbar"/>
                </header>
                <sheet>
                    <group>
                        <group>
                            <field name="loan_issue_id"/>
                            <field name="name"/>
                            <field name="quantity"/>
                            <field name="face_value"/>
                        </group>
                        <group>
                            <field name="date"/>
                            <field name="payment_date"/>
                            <field name="partner_id"/>
                            <field name="amount"/>
                        </group>
                    </group>
                    <notebook>
                        <page string="Interest lines">
                            <field name="interest_lines">
                                <tree delete="false" create="false">
                                    <field name="name"/>
                                    <field name="amount"/>
                                    <field name="accrued_amount"/>
                                    <field name="interest"/>
                                    <field name="net_interest"/>
                                    <field name="taxes_amount"/>
                                    <field name="due_amount"/>
                                    <field name="due_date"/>
                                    <field name="state"/>
                                </tree>
                            </field>
                        </page>
                    </notebook>
                </sheet>
            </form>
        </field>
    </record>

    <record id="view_loan_issue_line_filter" model="ir.ui.view">
        <field name="name">Loans Search</field>
        <field name="model">loan.issue.line</field>
        <field name="arch" type="xml">
            <search string="Search Loans">
                <field name="name"/>
                <field name="partner_id"/>
                <field name="loan_issue_id"/>
                <separator/>
                <filter string="Draft" name="state_draft"
                        domain="[('state','=','draft')]"/>
                <filter string="Paid" name="state_paid"
                        domain="[('state','=','paid')]"/>
                <filter string="Done" name="state_done"
                        domain="[('state','=','done')]"/>
                <filter string="Subscribed" name="state_subscribed"
                        domain="[('state','=','subscribed')]"/>
                <group expand="0" name="group_by" string="Group By">
                    <filter name="loan_issue_id" string="Loan Issue"
                            context="{'group_by' : 'loan_issue_id'}"/>
                    <filter name="date" string="Subscription Date"
                            context="{'group_by': 'date'}"/>
                </group>
            </search>
        </field>
    </record>
</odoo>