new file upload controller, new upload template, new utils lib, some elixir basics

git-svn-id: http://yolanda.mister-muffin.de/svn@373 7eef14d0-6ed0-489d-bf55-20463b2d70db

trunk/yolanda/config/environment.py

@@ -7,6 +7,9 @@ import yolanda.lib.app_globals as app_globals
 import yolanda.lib.helpers
 from yolanda.config.routing import make_map
 
+from sqlalchemy import engine_from_config
+from yolanda.model import init_model
+
 def load_environment(global_conf, app_conf):
     """Configure the Pylons environment via the ``pylons.config``
     object
@@ -31,3 +34,6 @@ def load_environment(global_conf, app_conf):
 
     # CONFIGURATION OPTIONS HERE (note: all config options will override
     # any Pylons config options)
+    
+    engine = engine_from_config(config, 'sqlalchemy.')
+    init_model(engine)

trunk/yolanda/controllers/upload.py

@@ -0,0 +1,23 @@
+import logging
+
+from yolanda.lib.base import *
+
+log = logging.getLogger(__name__)
+
+class UploadController(BaseController):
+
+    def index(self):
+        return render('/xhtml/upload.mako')
+    
+    def upload(self):
+        myfile = request.params['file']
+        permanent_file = open(os.path.join(
+                                           myfile.filename.lstrip(os.sep)),
+                              'w')
+
+        u.copyfileobj(myfile.file, permanent_file)
+        myfile.file.close()
+        permanent_file.close()
+
+        return 'Successfully uploaded: %s'%myfile.filename
+

trunk/yolanda/lib/base.py

@@ -11,7 +11,9 @@ from pylons.i18n import _, ungettext, N_
 from pylons.templating import render
 
 import yolanda.lib.helpers as h
+import yolanda.lib.utils as u
 import yolanda.model as model
+import os
 
 class BaseController(WSGIController):
 
@@ -21,7 +23,10 @@ class BaseController(WSGIController):
         # the request is routed to. This routing information is
         # available in environ['pylons.routes_dict']
         response.headers['Content-type'] = "application/xml"
+        try:
             return WSGIController.__call__(self, environ, start_response)
+        finally:
+            Session.remove()
 
 # Include the '_' function in the public names
 __all__ = [__name for __name in locals().keys() if not __name.startswith('_') \

trunk/yolanda/lib/utils.py

@@ -0,0 +1,8 @@
+#borrowed from shutil to minimize dependencies
+def copyfileobj(fsrc, fdst, length=16*1024):
+    """copy data from file-like object fsrc to file-like object fdst"""
+    while 1:
+        buf = fsrc.read(length)
+        if not buf:
+            break
+        fdst.write(buf)

trunk/yolanda/model/__init__.py

@@ -0,0 +1,21 @@
+from sqlalchemy.orm import scoped_session, sessionmaker
+import elixir
+
+# replace the elixir session with our own
+Session = scoped_session(sessionmaker(autoflush=True, transactional=True))
+elixir.session = Session
+elixir.options_defaults.update({
+    'shortnames': True
+})
+
+# use the elixir metadata
+metadata = elixir.metadata
+
+# this will be called in config/environment.py
+def init_model(engine):
+    metadata.bind = engine
+
+# import your entities, and set them up
+from entities import *
+elixir.setup_all()
+

trunk/yolanda/model/entities.py

@@ -0,0 +1,8 @@
+from elixir.entity import *
+from elixir.fields import *
+from sqlalchemy.types import *
+from datetime import datetime
+
+class Person(Entity):
+    name = Field(Unicode(128))
+    birthdate = Field(DateTime, default=datetime.now)

trunk/yolanda/templates/xhtml/upload.mako

@@ -0,0 +1,17 @@
+<%inherit file="base.mako"/>
+
+<%def name="title()">
+    front page
+</%def>
+
+<%def name="heading()">
+    Upload Video
+</%def>
+
+
+        ${h.form(h.url_for(action='upload'), multipart=True)}
+            ${h.file_field('file')}<br />
+            ${h.text_field('name')}<br />
+            ${h.submit('Upload')}
+
+        ${h.end_form()}

trunk/yolanda/websetup.py

@@ -6,9 +6,16 @@ from pylons import config
 
 from yolanda.config.environment import load_environment
 
+from yolanda.model import metadata
+
 log = logging.getLogger(__name__)
 
 def setup_config(command, filename, section, vars):
     """Place any commands to setup yolanda here"""
     conf = appconfig('config:' + filename)
     load_environment(conf.global_conf, conf.local_conf)
+    
+    log.info("Creating tables")
+    metadata.create_all()
+    log.info("Successfully setup")
+