Generate an Odoo downloadable CSV report - export-to-csv

Question

I need to provide a button in Sale Order Form View to export order lines to CSV with a specific format. I have searched a lot but I only have found custom modules that don't satisfy the solution because users shouldn't have to select fields.
UPDATE: Solution
I ended up doing the following solution, thanks to #phillip-stack and his answer:
Model
# -*- coding: utf-8 -*-
import csv, sys
from openerp import api, fields, models, _
class sale_order_export_line(models.Model):
_inherit = 'sale.order'
_auto = False
#api.multi
def export_lines_to_csv(self):
return {
'type' : 'ir.actions.act_url',
'url': '/csv/download/sale_order/%s/supplier_name/%s'%(self.id,'American'),
'target': 'blank',
}
#api.model
def _csv_download(self,vals):
order_id = vals.get('order_id')
supplier_name = vals.get('supplier_name')
so = self.env['sale.order'].browse(order_id)
lines = so.order_line.search([('order_id','=',order_id),('supplier_name','ilike',supplier_name)])
columns = [u'Número pedido Dentaltix',u'Nombre de cliente',u'Dirección', u'Código postal', u'Población',
u'Provincia', u'País', u'Teléfono', u'Horario de entrega', u'Referencia', u'Cantidad', u'Envío']
csv = u','.join(columns)
csv += "\n"
if len(lines) > 0:
for ol in lines:
drupal_order_name = so.drupal_order_name if so.drupal_order_name else ''
client_notes = so.client_notes if so.client_notes else ''
supplier_ref = ol.supplier_ref if ol.supplier_ref else ''
picking_policy = DELIVERY_METHODS[so.picking_policy] if so.picking_policy else 'Directo'
product_uos_qty = str(int(ol.product_uos_qty)) if ol.product_uos_qty else '0'
csv_row = u'","'.join(data)
csv += u"\"{}\"\n".format(csv_row)
return csv
sale_order_export_line()
Controller
# -*- coding: utf-8 -*-
from openerp import http
from openerp.http import request
from openerp.addons.web.controllers.main import serialize_exception,content_disposition
class SaleOrderController(http.Controller):
#http.route('/csv/download/sale_order/<int:order_id>/supplier_name/<string:supplier_name>', auth='user')
def sale_order_lines_csv_download(self, order_id, supplier_name, **kw):
if supplier_name:
csv = http.request.env['sale.order']._csv_download({'order_id': order_id, 'supplier_name':supplier_name})
else:
csv = http.request.env['sale.order']._csv_download({'order_id': order_id, 'supplier_name': False})
filename = 'order_lines_%s_%s.csv'%(order_id,supplier_name)
return request.make_response(csv,
[('Content-Type', 'application/octet-stream'),
('Content-Disposition', 'attachment; filename="%s"'%(filename))])

Answer 1

I probably should not be admitting to this. But I use a technique with controllers and adding a link to a form. The controller can be modified to conduct custom security checks of your choosing then you can use sudo() to bypass field restrictions on the models in question. Then just return the csv with the format of your choosing.
And of course... An Example!
CONTROLLER
#http.route('/csv/download/<int:rec_id>/', auth='user', website=True)
def csvdownload(self, rec_id, **kw):
return http.request.env['your_addon.your_model']._csv_download({'rec_id': rec_id})
MODEL METHOD
def _get_csv_url(self):
self.csv_url = "/csv/download/{}/".format(self.id)
csv_url = fields.Char(compute=_get_csv_url)
#api.model
def _csv_download(self,vals):
sql = """SELECT
quote_nullable(field_1),
quote_nullable(field_2),
quote_nullable(field_3),
quote_nullable(field_4)
FROM
table_name
WHERE id={}""".format(vals.get(rec_id))
self.env.cr.execute(sql)
rows = self.env.cr.fetchall()
csv = """'Field 1','Field 2','Field 3','Field 4'\n"""
if rows:
for row in rows:
csv_row = ""
for item in row:
csv_row+= "{},".format(item)
csv+="{}\n".format(csv_row[:-1])
return csv
In your form have a link which points to your controller
<a id="csv_download" href="#" target="_blank" download="file.csv"/>
<div id="csv_url_div" style="display:none"><field name="csv_url"/></div>
<script>
$(document).ready(function(){
var csv_url = $("#csv_url_div").text();
$("#csv_download").attr("href", csv_url);
});
</script>
I acknowledge the level of hackyness that is going on here. I am sure if I spent more time on it I could do something with a nice Odoo widget that would be quite nice. But it has worked for me.