In OpenERP first we create the form and browse the record of  account invoice line and then select to the product in product form and then find to the the current user’s ID for security checks. In account invoice line we check to the list of membership line IDs and fields name  and  standard dictionary for contextual values and also  dictionary of state Value.

use this function show in given below

def members(self, cr, uid, ids, name, args, context=None):
  
    res = {}
    inv_obj = self.pool.get('account.invoice')
    for line in self.browse(cr, uid, ids, context=context):
      cr.execute('''
      SELECT i.state, i.id FROM
      account_invoice i
      WHERE
      i.id = (
        SELECT l.invoice_id FROM
        account_invoice_line l WHERE
        l.id = (
          SELECT ml.account_invoice_line FROM
          membership_membership_line ml WHERE
          ml.id = %s
          )
        )
      ''', (line.id,))
      fetched = cr.fetchone()
      if not fetched:
        res[line.id] = 'canceled'
        continue
      istate = fetched[0]
      state = 'none'
      if (istate == 'draft') | (istate == 'proforma'):
        state = 'waiting'
      elif istate == 'open':
        state = 'invoiced'
      elif istate == 'paid':
        state = 'paid'
        inv = inv_obj.browse(cr, uid, fetched[1], context=context)
        for payment in inv.payment_ids:
          if payment.invoice and payment.invoice.type == 'out_refund':
            state = 'canceled'
      elif istate == 'cancel':
        state = 'canceled'
      res[line.id] = state
    return res