[web2py] Re: Image gallery on GAE
Thank you for your replies!
[web2py] Re: Image gallery on GAE
Mind that @cache(request.env.path_info+request.env.query_string, time_expire=3600, cache_model=cache.ram) my end up caching a lot of stuff and cause out of memory problems. Is there a way on GAE to have a normal form that includes a file upload for the blobstore? I mean a form that includes other fields that go in db normally? Some people have reported problems when videos where stored in blobstore. Do you have any experience with it? On Sep 15, 5:59 pm, howesc how...@umich.edu wrote: I have just such a setup - i'd give you the URL to the site, but it's not public yetremind me in a week or two. The link Martin gives is the best bit of blobstore info that i have found for web2py yet. i (cfhowes) wrote the 2 comments, so please let me know if they don't work - i may have made fixes and not updated the post. also, i created a method that does image resizing and caches the image in memory for the gallery page, so yes the first load of the page may be slow (this also depends on frequency of use of the app on GAE), but subsequent visits are pretty quick. here's the caching image resizing download method: @cache(request.env.path_info+request.env.query_string, time_expire=3600, cache_model=cache.ram) def download(): #handle non-gae download if not request.env.web2py_runtime_gae or not request.args[0]: return response.download(request,db) #handle gae download my_uploads=db(db.artwork.image==request.args[0]).select()[0] if not my_uploads.blob_key: return None blob_info = blobstore.get(my_uploads.blob_key) response.headers['Content-Type'] = blob_info.content_type; response.headers['Content-Disposition'] = attachment; filename= %s % blob_info.filename #response.headers['Cache-Control'] = max-age=3600, must- revalidate if (len(request.args) 1 and request.args[1]) or request.vars.width: if (len(request.args) 1 and request.args[1]): request.vars.width = request.args[1] from google.appengine.api import images img = images.Image(blob_key=my_uploads.blob_key) if not request.vars.height: img.resize(int(request.vars.width)) else: logging.info(resize width and height) img.resize(int(request.vars.width), int(request.vars.height)) return img.execute_transforms(images.JPEG) else: response.headers['X-AppEngine-BlobKey'] = my_uploads.blob_key; return response.body.getvalue() enjoy! On Sep 15, 3:23 am, Martin.Mulone mulone.mar...@gmail.com wrote: First to use blobstore you have to enabled billing. Yes for your approach i think the best is to use blobstore in gae. Take a look to this:http://www.web2pyslices.com/main/slices/take_slice/63 And to display images use the new introduce function get_serving_url is really fast and doesnt consume much resources you have to store blob_key) def _response_image(table_name='images',image_size=64): if request.env.web2py_runtime_gae: from google.appengine.ext import blobstore from google.appengine.api import images if not request.args: raise HTTP(404) myimages=db(db[table_name].image==request.args[0]).select() if myimages: myimage = myimages[0] if myimage.blob_key: if GAE_SERVING_IMAGE: image_serving = images.get_serving_url(myimage.blob_key,image_size) return image_serving On 15 sep, 07:08, István Gazsi theag...@gmail.com wrote: Hi everybody! As part of a website I try to make an image gallery in web2py. The database model is simple: there is a 100x100 thumbnail, the whole picture, and (optionally) the image's title. The website runs on Google App Engine and web2py v1.83.2 for now. There are multiple problems with it. First, I can only upload images under 1MB. Second, the gallery page loads very slowly (I make a select for only 25 records in web2py), and in the GAE logs there is always warnings about memory usage. For the first problem the solution would be using the GAE blobstore, but I don't really know how to do that. Is it implemented in web2py? For the second problem I don't know the solution. If you would do an image gallery like mine from the ground up, how would you do that? And do you have any advices about my problems? Thanks in advance!
[web2py] Re: Image gallery on GAE
i try some time ago, caching download with this parameters and didn't work. perhaps you have to take a look to this http://groups.google.com/group/web2py/browse_thread/thread/c10235cb16c476f/d72d988abe41a3c1?lnk=gstq=cache+download#d72d988abe41a3c1 On Sep 30, 11:14 am, mdipierro mdipie...@cs.depaul.edu wrote: Mind that @cache(request.env.path_info+request.env.query_string, time_expire=3600, cache_model=cache.ram) my end up caching a lot of stuff and cause out of memory problems. Is there a way on GAE to have a normal form that includes a file upload for the blobstore? I mean a form that includes other fields that go in db normally? Some people have reported problems when videos where stored in blobstore. Do you have any experience with it? On Sep 15, 5:59 pm, howesc how...@umich.edu wrote: I have just such a setup - i'd give you the URL to the site, but it's not public yetremind me in a week or two. The link Martin gives is the best bit of blobstore info that i have found for web2py yet. i (cfhowes) wrote the 2 comments, so please let me know if they don't work - i may have made fixes and not updated the post. also, i created a method that does image resizing and caches the image in memory for the gallery page, so yes the first load of the page may be slow (this also depends on frequency of use of the app on GAE), but subsequent visits are pretty quick. here's the caching image resizing download method: @cache(request.env.path_info+request.env.query_string, time_expire=3600, cache_model=cache.ram) def download(): #handle non-gae download if not request.env.web2py_runtime_gae or not request.args[0]: return response.download(request,db) #handle gae download my_uploads=db(db.artwork.image==request.args[0]).select()[0] if not my_uploads.blob_key: return None blob_info = blobstore.get(my_uploads.blob_key) response.headers['Content-Type'] = blob_info.content_type; response.headers['Content-Disposition'] = attachment; filename= %s % blob_info.filename #response.headers['Cache-Control'] = max-age=3600, must- revalidate if (len(request.args) 1 and request.args[1]) or request.vars.width: if (len(request.args) 1 and request.args[1]): request.vars.width = request.args[1] from google.appengine.api import images img = images.Image(blob_key=my_uploads.blob_key) if not request.vars.height: img.resize(int(request.vars.width)) else: logging.info(resize width and height) img.resize(int(request.vars.width), int(request.vars.height)) return img.execute_transforms(images.JPEG) else: response.headers['X-AppEngine-BlobKey'] = my_uploads.blob_key; return response.body.getvalue() enjoy! On Sep 15, 3:23 am, Martin.Mulone mulone.mar...@gmail.com wrote: First to use blobstore you have to enabled billing. Yes for your approach i think the best is to use blobstore in gae. Take a look to this:http://www.web2pyslices.com/main/slices/take_slice/63 And to display images use the new introduce function get_serving_url is really fast and doesnt consume much resources you have to store blob_key) def _response_image(table_name='images',image_size=64): if request.env.web2py_runtime_gae: from google.appengine.ext import blobstore from google.appengine.api import images if not request.args: raise HTTP(404) myimages=db(db[table_name].image==request.args[0]).select() if myimages: myimage = myimages[0] if myimage.blob_key: if GAE_SERVING_IMAGE: image_serving = images.get_serving_url(myimage.blob_key,image_size) return image_serving On 15 sep, 07:08, István Gazsi theag...@gmail.com wrote: Hi everybody! As part of a website I try to make an image gallery in web2py. The database model is simple: there is a 100x100 thumbnail, the whole picture, and (optionally) the image's title. The website runs on Google App Engine and web2py v1.83.2 for now. There are multiple problems with it. First, I can only upload images under 1MB. Second, the gallery page loads very slowly (I make a select for only 25 records in web2py), and in the GAE logs there is always warnings about memory usage. For the first problem the solution would be using the GAE blobstore, but I don't really know how to do that. Is it implemented in web2py? For the second problem I don't know the solution. If you would do an image gallery like mine from the ground up, how would you do that? And do you have any advices about my problems? Thanks in advance!
[web2py] Re: Image gallery on GAE
I have an integrated form that does a file upload and other fields. the trouble is to get blobstore to load the file you have to redirect to blobstore then back to your form processing. it works fine when there are no errors, but the major problem i have with it is that when there are errors, the previous values get lost. perhaps it's a bug in my controller. i have no experience with video yet. cfh On Sep 30, 7:14 am, mdipierro mdipie...@cs.depaul.edu wrote: Mind that @cache(request.env.path_info+request.env.query_string, time_expire=3600, cache_model=cache.ram) my end up caching a lot of stuff and cause out of memory problems. Is there a way on GAE to have a normal form that includes a file upload for the blobstore? I mean a form that includes other fields that go in db normally? Some people have reported problems when videos where stored in blobstore. Do you have any experience with it? On Sep 15, 5:59 pm, howesc how...@umich.edu wrote: I have just such a setup - i'd give you the URL to the site, but it's not public yetremind me in a week or two. The link Martin gives is the best bit of blobstore info that i have found for web2py yet. i (cfhowes) wrote the 2 comments, so please let me know if they don't work - i may have made fixes and not updated the post. also, i created a method that does image resizing and caches the image in memory for the gallery page, so yes the first load of the page may be slow (this also depends on frequency of use of the app on GAE), but subsequent visits are pretty quick. here's the caching image resizing download method: @cache(request.env.path_info+request.env.query_string, time_expire=3600, cache_model=cache.ram) def download(): #handle non-gae download if not request.env.web2py_runtime_gae or not request.args[0]: return response.download(request,db) #handle gae download my_uploads=db(db.artwork.image==request.args[0]).select()[0] if not my_uploads.blob_key: return None blob_info = blobstore.get(my_uploads.blob_key) response.headers['Content-Type'] = blob_info.content_type; response.headers['Content-Disposition'] = attachment; filename= %s % blob_info.filename #response.headers['Cache-Control'] = max-age=3600, must- revalidate if (len(request.args) 1 and request.args[1]) or request.vars.width: if (len(request.args) 1 and request.args[1]): request.vars.width = request.args[1] from google.appengine.api import images img = images.Image(blob_key=my_uploads.blob_key) if not request.vars.height: img.resize(int(request.vars.width)) else: logging.info(resize width and height) img.resize(int(request.vars.width), int(request.vars.height)) return img.execute_transforms(images.JPEG) else: response.headers['X-AppEngine-BlobKey'] = my_uploads.blob_key; return response.body.getvalue() enjoy! On Sep 15, 3:23 am, Martin.Mulone mulone.mar...@gmail.com wrote: First to use blobstore you have to enabled billing. Yes for your approach i think the best is to use blobstore in gae. Take a look to this:http://www.web2pyslices.com/main/slices/take_slice/63 And to display images use the new introduce function get_serving_url is really fast and doesnt consume much resources you have to store blob_key) def _response_image(table_name='images',image_size=64): if request.env.web2py_runtime_gae: from google.appengine.ext import blobstore from google.appengine.api import images if not request.args: raise HTTP(404) myimages=db(db[table_name].image==request.args[0]).select() if myimages: myimage = myimages[0] if myimage.blob_key: if GAE_SERVING_IMAGE: image_serving = images.get_serving_url(myimage.blob_key,image_size) return image_serving On 15 sep, 07:08, István Gazsi theag...@gmail.com wrote: Hi everybody! As part of a website I try to make an image gallery in web2py. The database model is simple: there is a 100x100 thumbnail, the whole picture, and (optionally) the image's title. The website runs on Google App Engine and web2py v1.83.2 for now. There are multiple problems with it. First, I can only upload images under 1MB. Second, the gallery page loads very slowly (I make a select for only 25 records in web2py), and in the GAE logs there is always warnings about memory usage. For the first problem the solution would be using the GAE blobstore, but I don't really know how to do that. Is it implemented in web2py? For the second problem I don't know the solution. If you would do an image gallery like mine from the ground up, how would you do that? And
[web2py] Re: Image gallery on GAE
also note that you can enable billing but ensure you never pay by allocating the resources to something you don't use - eg sending emails On Sep 15, 8:23 pm, Martin.Mulone mulone.mar...@gmail.com wrote: First to use blobstore you have to enabled billing. Yes for your approach i think the best is to use blobstore in gae. Take a look to this:http://www.web2pyslices.com/main/slices/take_slice/63 And to display images use the new introduce function get_serving_url is really fast and doesnt consume much resources you have to store blob_key) def _response_image(table_name='images',image_size=64): if request.env.web2py_runtime_gae: from google.appengine.ext import blobstore from google.appengine.api import images if not request.args: raise HTTP(404) myimages=db(db[table_name].image==request.args[0]).select() if myimages: myimage = myimages[0] if myimage.blob_key: if GAE_SERVING_IMAGE: image_serving = images.get_serving_url(myimage.blob_key,image_size) return image_serving On 15 sep, 07:08, István Gazsi theag...@gmail.com wrote: Hi everybody! As part of a website I try to make an image gallery in web2py. The database model is simple: there is a 100x100 thumbnail, the whole picture, and (optionally) the image's title. The website runs on Google App Engine and web2py v1.83.2 for now. There are multiple problems with it. First, I can only upload images under 1MB. Second, the gallery page loads very slowly (I make a select for only 25 records in web2py), and in the GAE logs there is always warnings about memory usage. For the first problem the solution would be using the GAE blobstore, but I don't really know how to do that. Is it implemented in web2py? For the second problem I don't know the solution. If you would do an image gallery like mine from the ground up, how would you do that? And do you have any advices about my problems? Thanks in advance!
[web2py] Re: Image gallery on GAE
First to use blobstore you have to enabled billing. Yes for your approach i think the best is to use blobstore in gae. Take a look to this: http://www.web2pyslices.com/main/slices/take_slice/63 And to display images use the new introduce function get_serving_url is really fast and doesnt consume much resources you have to store blob_key) def _response_image(table_name='images',image_size=64): if request.env.web2py_runtime_gae: from google.appengine.ext import blobstore from google.appengine.api import images if not request.args: raise HTTP(404) myimages=db(db[table_name].image==request.args[0]).select() if myimages: myimage = myimages[0] if myimage.blob_key: if GAE_SERVING_IMAGE: image_serving = images.get_serving_url(myimage.blob_key,image_size) return image_serving On 15 sep, 07:08, István Gazsi theag...@gmail.com wrote: Hi everybody! As part of a website I try to make an image gallery in web2py. The database model is simple: there is a 100x100 thumbnail, the whole picture, and (optionally) the image's title. The website runs on Google App Engine and web2py v1.83.2 for now. There are multiple problems with it. First, I can only upload images under 1MB. Second, the gallery page loads very slowly (I make a select for only 25 records in web2py), and in the GAE logs there is always warnings about memory usage. For the first problem the solution would be using the GAE blobstore, but I don't really know how to do that. Is it implemented in web2py? For the second problem I don't know the solution. If you would do an image gallery like mine from the ground up, how would you do that? And do you have any advices about my problems? Thanks in advance!
