odoo hides Many2many's "New" and One2many's "Save and New" buttons to hide

• For Many2many, open the new form view and hide the "New" button,

The effect after hiding

Add the field in xml

<field name="production_line_ids"
 options="{
     
     'no_create': True}"/>

# options="{'no_create': True}"

Add options="{'no_create': True}" to hide it

• For One2many, open the new form view and hide the "Save and New" button. The
  
  hidden effect
  
  is added in the scss file

.modal-footer .btn-primary:nth-of-type(2) {
    
    
  display: None;
}

Import scss file

        <template id="production_front" name="production settings" inherit_id="web.assets_backend">
            <xpath expr="." position="inside">
                <link rel="stylesheet" type="text/scss" href="/production/static/src/scss/production_style.scss"/>
            </xpath>
        </template>

After adding, the One2many "Save and New" button of the entire system is hidden