link button to a model function(method) 自定义一个点击一个button执行某个方法.

file: access_view.xml

<record model="ir.ui.view" id="it_access_form">
            <field name="name">it.access.form</field>
            <field name="model">it.access</field>
            <field name="arch" type="xml">
                <form string="Access">
                    <sheet>
                        <div class="oe_title">
                            <div class="oe_edit_only">
                                <label for="name"/>
                            </div>
                            <h1>
                                <field name="name"/>
                            </h1>
                            <div class="oe_edit_only">
                                <label for="equipment_id"/>
                            </div>
                            <h1>
                                <field name="equipment_id"/>
                            </h1>
                            <div class="oe_edit_only">
                                <label for="partner_id"/>
                            </div>
                            <h1>
                                <field name="partner_id"/>
                            </h1>
                        </div>
                        <group>
                            <!--fields-->
                        </group>
                        <field colspan="4" name="note" nolabel="1" placeholder="Write a note.."/>
                        <notebook>
                            <page string="Information">
                                <group col="4">
                                    <field name="user"/>
                                    <field name="application"/>
                                    <field name="port"/>
                                    <field name="description"/>
                                    <field name="link" widget="url" />
                                </group>
                                <newline/>
                                <group col="5">
                                    <field name="password" on_change="onchange_password(encrypted)"/>
                                    <button name="get_random_password" string="Generate" type="object" groups="it.group_it_mod"
                                            confirm="Are you sure?" colspan="1" icon="gtk-convert"/>
                                    <button name="encrypt_password" type="object" string="Encrypt" confirm="Are you sure?"
                                            icon="gtk-execute" colspan="1"  attrs="{'invisible': [('encrypted', '=', True)]}"/>
                                    <button name="decrypt_password" type="object" string="Decrypt" icon="gtk-print"
                                            colspan="1" attrs="{'invisible': [('encrypted', '=', False)]}"/>
                                    <newline/>
                                    <field name="encrypted" readonly="True"/>
                                </group>
                            </page>
                            <page string="SSL">
                                <group label="SSL">
                                    <field name="ssl_csr" filename="ssl_csr_filename"/>
                                    <field name="ssl_csr_filename" invisible="1"/>
                                    <field name="ssl_cert" filename="ssl_cert_filename"/>
                                    <field name="ssl_cert_filename" invisible="1"/>
                                    <field name="ssl_publickey" filename="ssl_publickey_filename"/>
                                    <field name="ssl_publickey_filename" invisible="1"/>
                                    <field name="ssl_privatekey" filename="ssl_privatekey_filename"/>
                                    <field name="ssl_privatekey_filename" invisible="1"/>
                                </group>
                            </page>
                            <page string="Audit Data" groups="it.group_it_mod">
                                <group>
                                    <group>
                                        <field name="user_id"/>
                                        <field name="creation_date" />
                                    </group>
                                </group>
                            </page>
                            <page string="Configuration" groups="it.group_it_mod">
                                <group>
                                    <group>
                                        <field name="active" />
                                        <field name="company_id" string="Company" groups="base.group_multi_company"/>
                                    </group>
                                </group>
                            </page>
                        </notebook>
                    </sheet>
                </form>
            </field>
        </record>

file: access.py

 def get_random_password(self, cr, uid, ids, context=None):
        logging.info("......1")
        for access in self.browse(cr, uid, ids, context=context):
            longitud = 16
            valores = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ<=>@#%&+"
            p = ""
            p = p.join([choice(valores) for i in range(longitud)])
            # self.write(cr, uid, ids, {'password': p, 'encrypted': False })
        return True

    def onchange_password(self, cr, uid, ids, encrypted, context={}):
        return {'value':{'encrypted': False}}


    def encrypt_password(self, cr, uid, ids, *args):
        logging.info('.........')
        try:
            from Crypto.Cipher import ARC4
        except ImportError:
            raise osv.except_osv(_('Error !'), _('Package python-crypto no installed.'))

        val = self.pool.get('ir.config_parameter').get_param(cr, uid, 'it_passkey')
        if not val:
            raise osv.except_osv(_('Error !'), _('For Encryptation you must set a system parameter with key "it_passkey" and fill in value a passkey'))

        for rec in self.browse(cr, uid, ids):

            if not rec.encrypted:
                enc = ARC4.new(val)
                try:
                    encripted = base64.b64encode(enc.encrypt(rec.password))
                except UnicodeEncodeError:
                    break
                self.write(cr, uid, [rec.id], {'password': encripted, 'encrypted': True})
            else:
                raise osv.except_osv(_('Error !'), _('Password already encrypted'))

        return True


    def decrypt_password(self, cr, uid, ids, *args):
        try:
            from Crypto.Cipher import ARC4
        except ImportError:
            raise osv.except_osv(_('Error !'), _('Package python-crypto no installed.'))

        val = self.pool.get('ir.config_parameter').get_param(cr, uid, 'it_passkey')
        if not val:
            raise osv.except_osv(_('Error !'), _('For Encryptation you must set a system parameter with key "it_passkey" and fill in value a passkey'))

        for rec in self.browse(cr, uid, ids):
            dec = ARC4.new(val)
            try:
                desencripted = dec.decrypt(base64.b64decode(rec.password))
                unicode(desencripted, 'ascii')
                raise osv.except_osv(_('Decrypt password:'), desencripted)
            except UnicodeDecodeError:
                raise osv.except_osv(_('Error !'), _('Wrong encrypt/decrypt password.'))

        return True