测试环境：Odoo8.0
1.在你的模块中创建一个方法，返回url
举个例子，
@api.multi
def get_stock_file(self):
return{'type':'ir.actions.act_url',
'url':'/web/binary/download_document?model=wizard.product.stock.report&field=datas&id=%s&filename=product_stock.xls'%(self.id),
'target':'self',}
例中的url包含model及field、id、filename等信息，下一步将在controller方法中抓取到url
2.创建controller类，捕获url，并下载文件
from openerp import http
from openerp.http import request
from openerp.addons.web.controllers.main import serialize_exception,content_disposition
import base64
class Binary(http.Controller):
@http.route('/web/binary/download_document',type='http',auth="public")
@serialize_exception
def download_document(self,model,field,id,filename=None,**kw):
"""Download link for files stored as binary fields.
:param str model:name of the model to fetch the binary from
:param str field:binary field
:param str id:id of the record from which to fetch the binary
:param str filename:field holding the file's name,if any
:returns::class:`werkzeug.wrappers.Response`
"""
Model=request.registry[model]
cr,uid,context=request.cr,request.uid,request.context
fields=[field]
res=Model.read(cr,uid,[int(id)],fields,context)[0]
filecontent=base64.b64decode(res.get(field)or'')
if not filecontent:
return request.not_found()
else:
if not filename:
filename='%s_%s'%(model.replace('.','_'),id)
return request.make_response(filecontent,
[('Content-Type','application/octet-stream'),
('Content-Disposition',content_disposition(filename))])
在上面的方法中从url中拿到ID并返回http响应。
例子中下载的是Excel文件，你可以返回任意类型的文件，甚至是数据库中的二进制字段。