Wizard Creation

Python

from openerp import models, fields, api
from openerp.tools.translate import _
import openerp.addons.decimal_precision as dp
from datetime import datetime

class od_cancellation_wizard(models.TransientModel):
    _name = 'od.cancellation.wizard'
    _description = 'Cancellation Wizard'

    reason = fields.Text(string='Reason',required="1")
    active_id = fields.Char(string='Form ID')
    active_model = fields.Char(string='Model')
    state = fields.Char('State')

    def default_get(self, cr, uid, fields, context=None):
        res = super(od_cancellation_wizard, self).default_get(cr, uid, fields, context=context)
        active_id = context.get('active_ids', [])
        state = ''
        active_model = context.get('active_model')
        if active_model == 'sale.order':
            state = self.pool.get('sale.order').browse(cr,uid,active_id,context).state
            res.update({'active_id': active_id,'active_model':active_model,'state':state})

        elif active_model == 'purchase.order':
            state = self.pool.get('purchase.order').browse(cr,uid,active_id,context).state
            res.update({'active_id': active_id,'active_model':active_model,'state':state})

        elif active_model == 'stock.picking':
            state = self.pool.get('stock.picking').browse(cr,uid,active_id,context).state
            res.update({'active_id': active_id,'active_model':active_model,'state':state})

        elif active_model == 'account.invoice':

            state = self.pool.get('account.invoice').browse(cr,uid,active_id,context).state
            res.update({'active_id': active_id,'active_model':active_model,'state':state})


        elif active_model == 'account.voucher':

            state = self.pool.get('account.voucher').browse(cr,uid,active_id,context).state
            res.update({'active_id': active_id,'active_model':active_model,'state':state})



     
        return res
    def cancel(self, cr, uid, ids, context=None):
        obj = self.browse(cr,uid,ids,context)
        active_id = int(obj.active_id)
        active_model = obj.active_model
        reason = obj.reason
        if active_model == 'sale.order':
            self.pool.get('sale.order').write(cr,uid,[active_id],{'state':'cancel','od_cancel_reason':reason},context)

        elif active_model == 'purchase.order':

            self.pool.get('purchase.order').action_cancel(cr,uid,[active_id],context)
            self.pool.get('purchase.order').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)
        elif active_model == 'stock.picking':

            self.pool.get('stock.picking').action_cancel(cr,uid,[active_id],context)
            self.pool.get('stock.picking').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)


        elif active_model == 'account.voucher':
            self.pool.get('account.voucher').cancel_voucher(cr,uid,[active_id],context)

            self.pool.get('account.voucher').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)


     
        return True
    def cancel_confirmed(self, cr, uid, ids, context=None):
        obj = self.browse(cr,uid,ids,context)
        active_id = int(obj.active_id)
        active_model = obj.active_model
        reason = obj.reason

     
        if active_model == 'purchase.order':

            self.pool.get('purchase.order').action_cancel(cr,uid,[active_id],context)
            self.pool.get('purchase.order').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)

        elif active_model == 'stock.picking':

            self.pool.get('stock.picking').action_cancel(cr,uid,[active_id],context)
            self.pool.get('stock.picking').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)

        elif active_model == 'sale.order':

            self.pool.get('sale.order').action_cancel(cr, uid, [active_id], context)
            self.pool.get('sale.order').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)

        elif active_model == 'account.voucher':
            self.pool.get('account.voucher').cancel_voucher(cr,uid,[active_id],context)

            self.pool.get('account.voucher').write(cr,uid,[active_id],{'od_cancel_reason':reason},context)


     
        return True



    @api.multi
    def action_cancel_for_invoice(self):
        active_id = int(self.active_id)
        reason= self.reason
        acco = self.env['account.invoice'].browse(active_id)
        acco.action_cancel()
        acco.write({'od_cancel_reason': reason})
        return True


XML



<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <record id="od_view_cancellation_wizard_form" model="ir.ui.view">
            <field name="name">Cancellation Reason</field>
            <field name="model">od.cancellation.wizard</field>
            <field name="arch" type="xml">
                <form string="Transfer details" >

                <p style="color:blue;font-size:10pt;">
                    Enter the cancellation reason for this document.
                </p>
                <group>
                    <field name="reason" nolabel="1" placeholder="Type Here...."/>
                    <field name="active_id" invisible="1"/>
                    <field name="active_model" invisible="1"/>
                    <field name="state" invisible="1"/>
                </group>
                    <footer>
                <p style="color:red;font-size:10pt;">
                    Are you sure you want to cancel this document?
           
                        <button name="cancel" string="Yes" type="object"  attrs="{'invisible': ['|',('state', '!=', 'draft'),('active_model', '=', 'account.invoice')]}" class="oe_link"/>
                        <button name="cancel_confirmed" string="Yes" type="object" class="oe_link" attrs="{'invisible': ['|',('state', '=', 'draft'),('active_model', '=', 'account.invoice')]}" />

                        <button name="action_cancel_for_invoice" string="Yes" type="object"  attrs="{'invisible': [('active_model','!=','account.invoice')]}" class="oe_link"/>

                        or
                        <button string="No"  class="oe_link" special="cancel"/>

                   </p>
                    </footer>


                 
               
                </form>
            </field>
        </record>




        <record id="action_od_view_cancellation_wizard" model="ir.actions.act_window">
            <field name="name">Cancellation Reason</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">od.cancellation.wizard</field>
            <field name="view_type">form</field>
            <field name="view_mode">form</field>
            <field name="view_id" ref="od_view_cancellation_wizard_form"/>
            <field name="target">new</field>
        </record>





    </data>

</openerp>


Button

       <button name="%(action_od_view_cancellation_wizard)d" states="manual,progress" string="Cancel Order" type="action" groups="base.group_user"/>


    def action_add(self, cr, uid, ids, context=None):
        context['mo_id'] = ids[0]


        return {
            'name': _('Product Enquiry'),
            'view_type': 'form',
            'view_mode': 'form',
            'res_model': 'od.product.enquiry',
            'context':context,
            'target': 'new',
            'type': 'ir.actions.act_window',
        }


 <button name="action_add" string="Consumption" icon="STOCK_ADD" type="object"/>