On Monday, August 5, 2019 at 11:28:43 PM UTC-7, Константин Комков wrote:
>
> *Val K*, it is my table.py file:
> db.define_table(
> 'recipes',
> Field('NAME',length=512),
> Field('IMAGE','upload'),
> migrate=False
> )
> It's code in my default.py file:
> row = db().select(db.recipes.IMAGE).first()
>
> image = str(dir(row))
> >>>
>
row.keys() is more interesting than dir(row)
> image = str(dir(row.IMAGE))
> >>>
> ['_BlobReader__blob_get', '_BlobReader__blobid',
> '_BlobReader__bytes_read', '_BlobReader__charset', '_BlobReader__closed',
> '_BlobReader__db_handle', '_BlobReader__ensure_open', '_BlobReader__index',
> '_BlobReader__is_text', '_BlobReader__mode', '_BlobReader__open',
> '_BlobReader__opened', '_BlobReader__pos', '_BlobReader__python_charset',
> '_BlobReader__reset_buffer', '_BlobReader__tr_handle', '__class__',
> '__del__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__',
> '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__',
> '__init__', '__init_subclass__', '__iter__', '__le__', '__lt__',
> '__module__', '__ne__', '__new__', '__next__', '__reduce__',
> '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__',
> '__subclasshook__', '__weakref__', '_blob_handle', '_isc_status',
> 'blob_charset', 'blob_id', 'charset', 'close', 'closed', 'flush',
> 'get_info', 'is_text', 'mode', 'next', 'read', 'readline', 'readlines',
> 'seek', 'tell']
>
> I can not do row.file.row.IMAGE
>
>
row.file probably doesn't exist, because it would have to be row.keys()
(it's not in the attributes, as you've shown), and then looking in a
putative row.files for row key or attribute doesn't seem sensible.
I don't have any experience with BLOBs, but I believe default/user/download
is able to handle them.
For a file-based upload field, the upload field is a string that
default/user/download uses to locate the file. That is, it is the
obfuscated file name, and the rest of the path is defined by the
uploadfolder value (default, myapp/uploads), as well as uploadseparate and
uploadfs. For BLOBs, you've instead set uploadfield to true. In my case,
the file-base one, the attributes are those of a string, but I don't have
to do much with it except return it in hrefs.
default/users/download will use the path name or the blob field to figure
out what to stream. There are times when it is desirable to set up the
streaming in your code, and I thought this was one of those times, but
Ramos and Val K have pointed out how to use the out-of-the-box tool to do
this.
/dps
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