Hi guys

Please i want to add some fields in existing class in odoo which is product.template.

Here is my code:

class product_template(models.Model):

#Inhertis the model product.template

_inherit = 'product.template'

_name = 'product.template'

_columns = { 

'CostPrice' : fields.float('Buy price'),

'ShippingCost' : fields.float('Shipping Cost'),

'FieldAfterGroup' : fields.char(string='Field After Group'),

'FieldNewPage' : fields.char(string='Field New Page'),

}

--------------------------------------

<record id="view_product_form_inherit" model="ir.ui.view">

<field name="name">product.template.common.form.inherit</field>

<field name="model">product.template</field>

<field name="inherit_id" ref="product.product_template_form_view"/>

<xpath expr="//page[@string='Information']" position="after">

<page name="Sample" string="Custom page">

<group>

<field name="FieldNewPage"/>

</group>

</page>

</xpath>

<xpath expr="//page[@string='Information']/group" position="after">

<group>

<field name="FieldAfterGroup"/>

</group>

</xpath>

</record>

<record model="ir.ui.view" id="view_product_form_inherit_tree">

<field name="name">product.template.common.form.inherit.tree</field>

<field name="model">product.template</field>

<field name="type">tree</field>

<field name="arch" type="xml">

<tree string="Services" >

<field name="FieldNewPage"/>

<field name="FieldAfterGroup"/>

</tree>

</field>

</record>

--------------------- I have this error 

2015-06-15 09:12:05,111 5222 CRITICAL see-teck openerp.modules.module: 'module' object has no attribute 'integer'

Please help please