[FIX] web: allow to use content_disposable without registry

When a user connect to /web/database/manager directly without the
login page before, the request don't have registry.
When the user click to backup a db, a traceback was raised:
    return request.registry['ir.http'].content_disposition(filename)
    TypeError: 'NoneType' object has no attribute 'getitem'
Because it was impossible to call content_diposable from ir_http
without registry.

Now content disposable has been moved in http.py and is callable from
anywhere.

This commit closes #13192
This commit closes #11583

addons/web/controllers/main.py

@@ -34,7 +34,7 @@ from openerp.tools.translate import _
 from openerp.tools import ustr
 from openerp.tools.misc import str2bool, xlwt
 from openerp import http
-from openerp.http import request, serialize_exception as _serialize_exception
+from openerp.http import request, serialize_exception as _serialize_exception, content_disposition
 from openerp.exceptions import AccessError
 
 _logger = logging.getLogger(__name__)
@@ -415,10 +415,6 @@ def xml2json_from_elementtree(el, preserve_whitespaces=False):
     res["children"] = kids
     return res
 
-def content_disposition(filename):
-    return request.registry['ir.http'].content_disposition(filename)
-
-
 def binary_content(xmlid=None, model='ir.attachment', id=None, field='datas', unique=False, filename=None, filename_field='datas_fname', download=False, mimetype=None, default_mimetype='application/octet-stream', env=None):
     return request.registry['ir.http'].binary_content(
         xmlid=xmlid, model=model, id=id, field=field, unique=unique, filename=filename, filename_field=filename_field,

openerp/addons/base/ir/ir_http.py

@@ -22,7 +22,7 @@ import openerp
 import openerp.exceptions
 import openerp.models
 from openerp import http
-from openerp.http import request, STATIC_CACHE
+from openerp.http import request, STATIC_CACHE, content_disposition
 from openerp.modules.module import get_resource_path, get_module_path
 from openerp.osv import osv, orm
 
@@ -209,16 +209,7 @@ class ir_http(osv.AbstractModel):
         return self._routing_map
 
     def content_disposition(self, filename):
-        filename = openerp.tools.ustr(filename)
-        escaped = urllib2.quote(filename.encode('utf8'))
-        browser = request.httprequest.user_agent.browser
-        version = int((request.httprequest.user_agent.version or '0').split('.')[0])
-        if browser == 'msie' and version < 9:
-            return "attachment; filename=%s" % escaped
-        elif browser == 'safari' and version < 537:
-            return u"attachment; filename=%s" % filename.encode('ascii', 'replace')
-        else:
-            return "attachment; filename*=UTF-8''%s" % escaped
+        return content_disposition(filename)
 
     def binary_content(self, xmlid=None, model='ir.attachment', id=None, field='datas', unique=False, filename=None, filename_field='datas_fname', download=False, mimetype=None, default_mimetype='application/octet-stream', env=None):
         """ Get file, attachment or downloadable content

openerp/http.py

@@ -20,6 +20,7 @@ import sys
 import threading
 import time
 import traceback
+import urllib2
 import urlparse
 import warnings
 from zlib import adler32
@@ -1807,6 +1808,18 @@ def send_file(filepath_or_fp, mimetype=None, as_attachment=False, filename=None,
                 rv.headers.pop('x-sendfile', None)
     return rv
 
+def content_disposition(filename):
+    filename = openerp.tools.ustr(filename)
+    escaped = urllib2.quote(filename.encode('utf8'))
+    browser = request.httprequest.user_agent.browser
+    version = int((request.httprequest.user_agent.version or '0').split('.')[0])
+    if browser == 'msie' and version < 9:
+        return "attachment; filename=%s" % escaped
+    elif browser == 'safari' and version < 537:
+        return u"attachment; filename=%s" % filename.encode('ascii', 'replace')
+    else:
+        return "attachment; filename*=UTF-8''%s" % escaped
+
 #----------------------------------------------------------
 # RPC controller
 #----------------------------------------------------------