CODEWITHSUNDEEP
google-app-enginerequest
LA_
LA_

Reputation: 20419

How to get particular POST arguments with GAE?

User uploads unknown number of files to my GAE application (photos + their descriptions). The form contains

<input type=hidden name="{{ item.photo_imgsrc_1280 }}" id="file{{ forloop.counter }}">
<input type=hidden name="desc{{ forloop.counter }}" value="{{ item.description }}">

(name value is actually replaced by Picasa with the file content)

Now in the upload handler I need to find according description for each file. Currently I do:

files_counter = 0
for argument in arguments:
    if 'localhost' in argument: # choose files only, not other fields - Picasa related approach
        files_counter +=1
        # self.request.get(argument) here returns the file
        # self.request.get('desc'+str(files_counter))) can return some other description, not 
        # related to the file above

How can I fix that?

Upvotes: 0

Views: 230

Answers (1)

moraes
moraes

Reputation: 13629

You don't need different names for each hidden field. You can have the same name multiple times, and get them all. So let's change your fields a little bit:

<input type=hidden name="{{ item.photo_imgsrc_1280 }}" id="file{{ forloop.counter }}">
<input type=hidden name="photo" value="{{ item.photo_imgsrc_1280 }}">
<input type=hidden name="description" value="{{ item.description }}">

Then, get all values for the photo and description fields:

photo_names = self.request.POST.getall('photo')
descriptions = self.request.POST.getall('description')

Here, photo_names is a list of the field names with photos. To get the actual image fields you'd do something like:

photos = [self.request.POST.get(name) for name in photo_names]

Now, you can group them into a list of tuples (photo, description), and iterate one by one:

data = zip(photos, descriptions)
for photo, description in data:
    # do what you need with each single photo/desc...

Upvotes: 2

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