farm/views/event_move.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
<data>
<record model="ir.ui.view" id="view_move_event_tree">
            <field name="name">move_event.tree</field>
            <field name="model">farm.move.event</field>
            <field name="type">tree</field>
            <field name="arch" type="xml">
                <tree string="Event" position="replace">
                    <tree string="Animals Moves">
	                    <field name="animal_type" />
	                    <field name="timestamp" />
	                    <field name="quantity" />
	                    <field name="from_location"/>
	                    <field name="to_location" />
                    </tree>
                </tree>
            </field>
        </record>
        <record model="ir.ui.view" id="view_move_event_form">
            <field name="name">move_event.form</field>
            <field name="model">farm.move.event</field>
            <field name="type">form</field>
            <field name="arch" type="xml">
                <form string="Event" position="replace">
                    <form string="Animal Move">
                    <sheet>
                        <group col="4" colspam="2">
                            <field name="animal_type" attrs="{'readonly': True}"/>
                            <field name="timestamp" attrs="{'readonly': True}"/>                        
                            <field name="animal" attrs="{'invisible':[('animal_type','=','group')], 'readonly': True}"/>
                            <field name="animal_group" attrs="{'invisible':[('animal_type','!=','group')], 'readonly': True}" />
                            <field name="from_location" attrs="{'readonly': True}"/>
                            <field name="to_location" attrs="{'readonly': True}"/>
                        </group>
                        <group>
                            <field name="move" attrs="{'readonly': True}"/>
                        </group>
                    </sheet>
                    </form>
                </form>
            </field>
        </record>
</data>
</openerp>