odoo/addons/event/report/report_event_registration_view.xml

<?xml version="1.0"?>
<openerp>
   <data>
    <!-- report , event on registration... start -->
        <record model="ir.ui.view" id="report_event_registration_tree">
            <field name="name">report.event.registration.tree</field>
            <field name="model">report.event.registration</field>
            <field name="type">tree</field>
            <field name="arch" type="xml">
                <tree string="Event on Registration">
                    <field name="date" invisible="1"/>
                    <field name="user_id" invisible="1"/>
                    <field name="year" invisible="1"/>
                    <field name="day" invisible="1"/>
                    <field name="month" invisible="1"/>
                    <field name="event_id" invisible="1"/>
                    <field name="state" invisible="1"/>
                    <field name="type" invisible="1"/>
                    <field name="nbevent"/>
                    <field name="draft_state"/>
                    <field name="confirm_state"/>
                    <field name="register_max"/>
                </tree>
            </field>
        </record>

        <record model ="ir.ui.view" id="report_event_registration_graph">
            <field name="name">report.event.registration.graph</field>
            <field name="model">report.event.registration</field>
            <field name="type">graph</field>
            <field name="arch" type="xml">
                <graph  string="Event on Registration" type="bar">
                    <field name="type"/>
                    <field name="draft_state" operator="+"/>
                    <field name="confirm_state" operator="+"/>
                    <field name="register_max" operator="+"/>
                    <field group="True"  name="event_id" />
                    
                </graph>
            </field>
        </record>
        
              <!-- Event on Registration search view -->  
        
        <record model="ir.ui.view" id="view_report_event_registration_search">
            <field name="name">.search</field>
            <field name="model">report.event.registration</field>
            <field name="type">search</field>
            <field name="arch" type="xml">
                <search string="Event on Registration">
                    <group col="8" colspan="4">
                    <filter icon="gtk-media-rewind" string="  365 Days  "
                        domain="[('date','&lt;=', time.strftime('%%Y-%%m-%%d')),('date','&gt;',(datetime.date.today()-datetime.timedelta(days=365)).strftime('%%Y-%%m-%%d'))]"
                        help="Tasks performed in last 365 days"/>
                    <filter icon="gtk-media-rewind" string="   30 Days   "
                        name="month"
                        domain="[('date','&lt;=', time.strftime('%%Y-%%m-%%d')), ('date','&gt;',(datetime.date.today()-datetime.timedelta(days=30)).strftime('%%Y-%%m-%%d'))]"
                        help="Tasks performed in last 30 days"/>
                    <filter icon="gtk-media-rewind"
                         string="    7 Days    "
                         separator="1"
                         domain="[('date','&lt;=', time.strftime('%%Y-%%m-%%d')), ('date','&gt;',(datetime.date.today()-datetime.timedelta(days=7)).strftime('%%Y-%%m-%%d'))]"
                         help="Tasks during last 7 days"/>
                         
                    <separator orientation="vertical"/>
                      <filter icon="terp-crm"
                        string="Draft"
                        domain="[('state','=','draft')]"/>
                    <filter icon="terp-crm"
                        string="Confirm"
                        domain="[('state', '=', 'confirm')]"/>
                    <separator orientation="vertical"/>    
                        <field name="event_id" widget="selection"/>

                         <field name="type" widget="selection"/>
                         <field name="user_id" widget="selection">
                            <filter icon="terp-partner"
                                string="My Events"
                                help="My Events"
                                domain="[('user_id','=',uid)]"/>
                        </field>
                         <field name="date" />
                    </group>
                    <newline/>
                    <group expand="1" string="Group By..." colspan="4" col="12">
                        <filter string="User" name="user" icon="terp-partner" context="{'group_by': 'user_id'}"/>
                        <filter string="Event" name="event" icon="terp-crm" context="{'group_by':'event_id'}"/>
                        <filter string="Event Type" icon="terp-crm"  context="{'group_by':'type'}"/>
                        <filter string="state" icon="terp-crm" context="{'group_by':'state'}"/>
                        <separator orientation="vertical" />
                        <filter string="Day" icon="terp-crm"
                            domain="[]" context="{'group_by':'day'}"/>
                        <filter string="Month" icon="terp-crm"
                            domain="[]" context="{'group_by':'month'}"/>
                        <filter string="Year" icon="terp-crm"
                            domain="[]" context="{'group_by':'year'}"/>
                    </group>
                </search>
            </field>
        </record>
    

        <record  model="ir.actions.act_window" id="action_report_event_registration">
            <field name="name">Events On Registrations</field>
            <field name="res_model">report.event.registration</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,graph</field>
            <field name="search_view_id" ref="view_report_event_registration_search"/>
            <field name="context">{"search_default_user":1,"search_default_month":1,'group_by_no_leaf':1,'group_by':[]}</field>
        </record>
       
        <!--<menuitem parent="menu_report_event" action="action_event_registration" id="menu_report_event_registration"/>-->
        <menuitem parent="menu_report_event" action="action_report_event_registration" id="menu_report_event_registration" />
 
    <!-- end...  -->
    </data>
</openerp>