Hi Pawan, unfortunately I have no choice, CSV file comes from outside source so I prefer not to change anything (to be hones for me it doesn't matter but third person can have a problem with it) so better if it will as it is (CSV file). As we spoken earlier, I just importing ready (downloaded) CSV file without change option :)

then you have to write a customized functionality for reading a csv file and import data from it for creating your orders...

Should be data written into the table into class which inherits from parent class ?

or is it there but need to be loaded into the table ?

Studying examples ... still not found how to ...

where are you stucked??

It's difficult to say where i'm not stucked :) I just need one more time to do everything step by step with you i guess ;) First thing: I created a class order_lines and inside this class I have item_id, item_title, quantity, sale_price. However I found that is a very bad idea because a lot of other things require item_id for example. So once I update module getting a lot of errors :) However, sorted it out but still when I'm trying to load CSV it won't load anything into those fields. Also, getting errors like:

2015-09-23 09:38:13,562 4533 WARNING GNG openerp.fields: Field order.lines.item_order_line with unknown comodel_name 'iprodstep_log'
2015-09-23 09:38:13,562 4533 WARNING GNG openerp.fields: Field order.lines.item_title with unknown comodel_name 'iprodstep_log'
2015-09-23 09:38:13,562 4533 WARNING GNG openerp.fields: Field order.lines.item_id with unknown comodel_name 'iprodstep_log'
2015-09-23 09:38:13,563 4533 WARNING GNG openerp.fields: Field order.lines.sale_price with unknown comodel_name 'iprodstep_log'
2015-09-23 09:38:13,563 4533 WARNING GNG openerp.fields: Field order.lines.sales_record_number with unknown comodel_name 'iprodstep_log'
2015-09-23 09:38:13,800 4533 WARNING GNG openerp.fields: Field product.line.state with unknown comodel_name 'iprodstep_log'

#----------------- Order lines ----------------
class order_lines(models.Model):
	_name = 'order.lines'
	_description = 'Order lines'
	
	item_order_line = fields.Many2one('iprodstep_log','Item')
	item_id = fields.Char()
	item_title = fields.Char()
	quantity = fields.Integer()
	sale_price = fields.Char()

	
#----------------- Main class -----------------    
class iprodstep_log(models.Model):
	_name = 'iprodstep.log'
	_description = 'iprodstep log'
	_inherit = ['ir.needaction_mixin','order.lines']

#------------------ Sub table -----------------
	order_line = fields.One2many('order.lines','item_order_line',string='item lines')

#--------- Sub table related fields -----------
	item_id = fields.Char('Item Number')
	item_title = fields.Char('Item Title')
	quantity = fields.Integer('Quantity')
	sale_price = fields.Char('Sale price')

			record.write({'order_lines.item_id': 'item_id'})

New week, new, ideas, new challenges ! Any thoughts how to solve this issue ??

New week, new ideas, new challenges, and new solution.... new problem.... ;)

anyway, please provide a brief what has been done till now in that....

Hi Pawan, been busy last week, so I had no time to try. This week I will buid custom import module and I hope it will work :):)