I'm trying to create a wizard.

This is the view code:

<?xml version="1.0" encoding="utf-8"?>
<openerp>
	<data>
		<record id="view_mymodule_wizard_form" model="ir.ui.view"> 
    		<field name="name">Wizard</field>
    		<field name="model">mymodule.wizard</field>
    		<field name="arch" type="xml">
        		<form string="mymodule Wizard">
        			<sheet>
        				<group name="top">
        					<group name="left">
        						<h1>Demo Wizard</h1>
        					</group>
						<group name="right">
							<button type="object"
				                    		name="crea_servizio"
				                    		string="Crea Servizio"/>
							<button type="object"
				                    		name="crea_attivita"
				                    		string="Crea Attivita"/>
				                </group>
					</group>
				</sheet>
				<footer>
					<button string="cancella" special="cancel"/>
				</footer>
		        </form>
		    </field>
		</record>
		
		<record id="view_mymodule_wizard" model="ir.actions.act_window">
		
			<field name="name">Selezione link</field>
			<field name="type">ir.actions.act_window</field>
            		<field name="res_model">mymodule.wizard</field>
            		<field name="view_type">form</field>
            		<field name="view_mode">form</field>
            		<field name="target">new</field>
		</record>
		
		<!-- Action to open To-do Task list -->
		<act_window id="action_mymodule_wizard" name="Attività / Servizio" res_model="mymodule.wizard" view_mode="tree,form" />
		<!-- Menu item to open To-do Task list -->
	  	<menuitem id="menu_mymodule_wizard" name="Menu mymodule Wizard" parent="mail.mail_feeds" sequence="40" action="action_mymodule_wizard" />
	  	
	</data>
</openerp>

and this is the py file:

# -*- encoding: utf-8 -*-
from openerp import models, api

class wizard(models.TransientModel):
        _name = 'mymodule.wizard'
        _description = "Wizard per la scelta dell'azione"

        @api.multi
        def crea_attivita(self):
            return {
                'type': 'ir.actions.act_window',
                'res_model': 'mymodule.tbl_attivita',
                'view_type': 'form',
                'view_mode': 'form',
                'target': 'new',
            }
            
        def crea_servizio(self):
            return {
                'type': 'ir.actions.act_window',
                'res_model': 'mymodule.tbl_servizio',
                'view_type': 'form',
                'view_mode': 'form',
                'target': 'new',
            } 

This is mymodule.py:

# -*- encoding: utf-8 -*-
from openerp import models, fields

class mymodule_attivita(models.Model):
        _name = 'mymodule.tbl_attivita'
        _description = 'Tabella Attivita'

        scode_attivita_contr =  fields.Char('Code', size=1, required=True)
        sdescrizione = fields.Text('Descrizione', equired=True)
        
class mymodule_servizio(models.Model):
        _name = 'mymodule.tbl_servizio'
        _description = 'Tabella Servizio'

        scode_servizio =  fields.Char('Code', size=1, required=True)
        sdescrizione = fields.Text('Descrizione', required=True) 

I have two problems.

1) When I click on "Crea servizio" in the wizard, I get this error:

Traceback (most recent call last):
  File "/home/openerp/openerp/http.py", line 530, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/openerp/openerp/http.py", line 567, in dispatch
    result = self._call_function(**self.params)
  File "/home/openerp/openerp/http.py", line 303, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/openerp/openerp/service/model.py", line 113, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/openerp/openerp/http.py", line 300, in checked_call
    return self.endpoint(*a, **kw)
  File "/home/openerp/openerp/http.py", line 796, in __call__
    return self.method(*args, **kw)
  File "/home/openerp/openerp/http.py", line 396, in response_wrap
    response = f(*args, **kw)
  File "/home/openerp/openerp/addons/web/controllers/main.py", line 953, in call_button
    action = self._call_kw(model, method, args, {})
  File "/home/openerp/openerp/addons/web/controllers/main.py", line 941, in _call_kw
    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
TypeError: crea_servizio() takes exactly 1 argument (5 given)

Instead, everything is ok with the other button (Crea Attivita).

2) I'm not able to make an action when I click on "Crea Attivita". I see the module 'mymodule' in the pop up, but I don't know I I have to do for writing in the db.

This is mymodule_view.xml:

<?xml version="1.0" encoding="utf-8"?>
<openerp>
	<data>
		<record id="view_mymodule_attivita" model="ir.ui.view"> 
    		<field name="name">mymodule Attivita</field>
    		<field name="model">mymodule.tbl_attivita</field>
    		<field name="arch" type="xml">
        		<form string="mymodule Attivita">
        			<sheet>
        				<notebook>
        					<page string="Tab 1">
		        				<group name="top">
		        					<group name="left">
		        						<field name="scode_attivita_contr"/>
		        						<field name="sdescrizione"/>
		        					</group>
		        				</group>
		        			</page>
		        			<page string="Tab 2">
		        				<group name="top">
									<group name="left">
										<field name="id" attrs="{'invisible': [('write_date', '=', False)]}"/>
										<field name="write_date" attrs="{'invisible': [('write_date', '=', False)]}"/>
										
									</group>
								</group>
							</page>
						</notebook>
					</sheet>
		        </form>
		    </field>
		</record>
		
		<record id="view_mymodule_servizio" model="ir.ui.view"> 
    		<field name="name">mymodule Servizio</field>
    		<field name="model">mymodule.tbl_servizio</field>
    		<field name="arch" type="xml">
        		<form string="mymodule Servizio">
        			<sheet>
        				<group name="top">
        					<group name="left">
        						<field name="id" attrs="{'invisible': [('write_date', '=', False)]}"/>
        						<field name="write_date" attrs="{'invisible': [('write_date', '=', False)]}"/>
        					</group>
							<group name="left">
								<field name="scode_servizio"/>
								<field name="sdescrizione"/>
							</group>
						</group>
					</sheet>
		        </form>
		    </field>
		</record>
		
		<!-- Action to open To-do Task list -->
		<act_window id="action_mymodule_attivita" name="Attivita" res_model="mymodule.tbl_attivita" view_mode="tree,form" />
		<act_window id="action_mymodule_servizio" name="Servizio" res_model="mymodule.tbl_servizio" view_mode="tree,form" />
		<!-- Menu item to open To-do Task list -->
	  	<menuitem id="menu_mymodule_attivita" name="Menu mymodule Attivita" parent="mail.mail_feeds" sequence="20" action="action_mymodule_attivita" />
	  	<menuitem id="menu_mymodule_servizio" name="Menu mymodule Servizio" parent="mail.mail_feeds" sequence="30" action="action_mymodule_servizio" />
		
	</data>
</openerp>
 

Could you help me, please?