farm/views/feed_event.xml

<?xml version="1.0" encoding="UTF-8"?>
    <openerp>
        <data>
            <record model="ir.actions.act_window" id="animal_group2_open_feed_events">
            <field name="domain">[('animal_group', '=', active_ids)]</field>
            <field name="name">Feed events</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form,graph</field>
            <field name="res_model">farm.feed.event</field>
            </record>
            <record model="ir.actions.act_window" id="animal_open_feed_events">
            <field name="domain">[('animal', '=', active_ids)]</field>
            <field name="name">Feed events</field>
            <field name="res_model">farm.feed.event</field>
            </record>
            <record model="ir.ui.view" id="farm_feed_event_graph_view">
            <field name="name">farm.feed.event.graph</field>
            <field name="model">farm.feed.event</field>
            <field name="type">graph</field>
            <field name="arch" type="xml">
                <graph string="Feed diagram" type="bar">
                    <field name="quantity" type="col"/>
                    <field name="start_date" type="row" interval="month"/>
                    <field name="feed_quantity" type="measure"/>
                </graph>
            </field>
        </record>
	        <record id="view_feed_event_tree" model="ir.ui.view">
	            <field name="name">feed_event.tree</field>
	            <field name="model">farm.feed.event</field>
	            <field name="mode">primary</field>
	            <field name="inherit_id" ref="view_abstract_event_tree"/>
	            <field name="arch" type="xml">
	                <field name="lot" position="after">
	                        <field name="feed_quantity" sum="Tot. feed quantity"/>
	                        <field name="feed_product"/>
	                        <field name="feed_lot"/>
	                </field>     
	            </field>
	        </record>
            <record id="view_feed_event_form" model="ir.ui.view">
            <field name="name">feed_event.form</field>
            <field name="model">farm.feed.event</field>
            <field name="mode">primary</field>
            <field name="inherit_id" ref="view_abstract_event_form"/>
            <field name="arch" type="xml">
            <field name="state" position="after">
                <h1>Feed Event</h1>
                </field>
                <field name="lot" position="after">
                        <field name="feed_quantity"/>
                        <field name="feed_quantity_animal_day"/>
                        <field name="location"/>
                        <field name="quantity"/>
                        <field name="feed_location"/>
                        <field name="feed_product"/>
                        <field name="feed_lot"
                            domain="[('product_id', '=', feed_product)]"/>
                        <field name="uom"/>
                        <field name="start_date"/>
                        <field name="end_date"/>
                        <field name="move"/>
                </field>     
            </field>
        </record>
        <record model="ir.ui.view" id="feed_event_search_view">
            <field name="name">farm.feed.event.search</field>
            <field name="model">farm.feed.event</field>
            <field name="arch" type="xml">
                <search string="Search feed event">
                    <group>
                        <field name="farm" />
                        <field name="feed_product" />
                    </group>
                    <newline />
                    <group expand="0" string="Group by...">
                        <filter string="Farm"
                                domain="[]"
                                context="{'group_by': 'farm'}" />
                        <filter string="Month"
                                domain="[]"
                                context="{'group_by': 'start_date:month'}" />
                        <filter string="Location"
                                domain="[]"
                                context="{'group_by': 'location'}" />
                        <filter string="State"
                                domain="[]"
                                context="{'group_by': 'state'}" />
                    </group>
                </search>
            </field>
        </record>
        </data>
    </openerp>