account-financial-tools/account_loan/views/account_loan_lines_view.xml

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

    <record id="account_loan_line_tree" model="ir.ui.view">
        <field name="name">account.loan.line.tree</field>
        <field name="model">account.loan.line</field>
        <field name="priority">99</field>
        <field name="arch" type="xml">
            <tree create="0">
                <field name="sequence" />
                <field name="date" />
                <field name="rate" />
                <field name="pending_principal_amount" />
                <field name="payment_amount" sum="Total payments" />
                <field name="principal_amount" />
                <field name="interests_amount" sum="Total interests" />
                <field
                    name="long_term_pending_principal_amount"
                    attrs="{'invisible': [('long_term_loan_account_id', '=', False)]}"
                />
                <field
                    name="long_term_principal_amount"
                    attrs="{'invisible': [('long_term_loan_account_id', '=', False)]}"
                />
                <field name="long_term_loan_account_id" invisible="1" />
                <field name="loan_state" invisible="1" />
                <field name="is_leasing" invisible="1" />
                <field name="has_invoices" invisible="1" />
                <field name="has_moves" invisible="1" />
                <field name="currency_id" invisible="1" />
                <button
                    name="view_account_values"
                    string="Values"
                    type="object"
                    icon="fa-eye"
                    attrs="{'invisible': [('has_moves', '=', False),  ('has_invoices', '=', False)]}"
                />
                <button
                    name="view_process_values"
                    string="Process"
                    type="object"
                    icon="fa-cogs"
                    attrs="{'invisible': ['|', '|', ('has_moves', '=', True),  ('has_invoices', '=', True), ('loan_state', '!=', 'posted')]}"
                />
            </tree>
        </field>
    </record>
    <record id="account_loan_line_form" model="ir.ui.view">
        <field name="name">account.loan.line.form</field>
        <field name="model">account.loan.line</field>
        <field name="arch" type="xml">
            <form>
                <group>
                    <field name="sequence" />
                    <field name="rate" />
                    <field name="date" />
                </group>
                <group>
                    <group>
                        <field name="pending_principal_amount" />
                        <field name="payment_amount" />
                        <field name="principal_amount" />
                        <field name="interests_amount" />
                        <field name="final_pending_principal_amount" />
                    </group>
                    <group>
                        <field name="long_term_pending_principal_amount" />
                        <field name="long_term_principal_amount" />
                    </group>
                </group>
            </form>
        </field>
    </record>
    <record id="account_loan_lines_view" model="ir.ui.view">
        <field name="name">account.loan.lines.view</field>
        <field name="model">account.loan.line</field>
        <field name="arch" type="xml">
            <tree create="0" import="0">
                <field name="sequence" />
                <field name="loan_id" />
                <field name="date" />
                <field name="rate" />
                <field name="pending_principal_amount" />
                <field name="payment_amount" />
                <field name="principal_amount" />
                <field name="interests_amount" />
                <field name="long_term_pending_principal_amount" />
                <field name="long_term_principal_amount" />
                <field name="company_id" optional="hide" />
                <field name="partner_id" optional="hide" />
                <field name="journal_id" optional="hide" />
                <field name="short_term_loan_account_id" optional="hide" />
                <field name="long_term_loan_account_id" optional="hide" />
                <field name="interest_expenses_account_id" optional="hide" />
                <groupby name="loan_id">
                    <button name="edit" type="edit" icon="fa-edit" title="Edit" />
                </groupby>
            </tree>
        </field>
    </record>

    <record id="view_account_loan_lines_search" model="ir.ui.view">
        <field name="name">Loan Items</field>
        <field name="model">account.loan.line</field>
        <field name="arch" type="xml">
            <search>
                <field name="loan_id" />
                <field name="partner_id" />
                <group expand='0' string='Group by...'>
                    <filter
                        string='Loan'
                        name="group_by_loan_id"
                        context="{'group_by': 'loan_id'}"
                    />
                </group>
            </search>
        </field>
    </record>

    <record id="account_loan_lines_action" model="ir.actions.act_window">
        <field name="name">Loan Items</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">account.loan.line</field>
        <field name="view_mode">tree,pivot,graph</field>
        <field name="view_id" ref="account_loan_lines_view" />
        <field name="context">{'search_default_group_by_loan_id': 1}</field>
    </record>

    <menuitem
        id="account_loan_lines_menu"
        parent="loan_menu"
        sequence="20"
        name="Loan Items"
        action="account_loan_lines_action"
    />
</odoo>