ここでの提案を使用しましたhttp://www.web2pyslices.com/slice/show/1387/upload-image-and-make-a-thumbnail 画像のサムネイルを作成します。サムネイルを取得しましたが、表示できません。
以下は私の関数です: db.py :
db.define_table('uploads', Field('dataset', 'reference dataset'),
Field('filename', represent = lambda x, row: "None" if x == None else [:45]),
Field('image', 'upload', uploadseparate=True, requires=IS_NOT_EMPTY() and IS_IMAGE(extensions=('jpeg', 'png','jpg','tif')) ),
Field('thumb', 'upload', uploadseparate=True, requires=IS_NOT_EMPTY() and IS_IMAGE(extensions=('jpeg', 'png', 'jpg', 'tif'))))
default.py :
def makeThumbnail(dbtable,ImageID,size=(150,150)):
try:
thisImage=db(dbtable.id==ImageID).select()[0]
import os, uuid
from PIL import Image
except: return
im=Image.open(request.folder + 'uploads/' + thisImage.image)
im.thumbnail(size,Image.ANTIALIAS)
thumbName='uploads.thumb.%s.jpg' % (uuid.uuid4())
im.save(request.folder + 'uploads/' + thumbName,'jpeg')
thisImage.update_record(thumb=thumbName)
return
def insertImage():
response.menu = [
(T('Home'),False,URL('default','experimenter')),
(T('Manage Data Set'),False,URL('default','MDS')),
(T('Manage Experiment'),False,URL('default','ME')),
(T('Manage Workflow Element'),False,URL('default','MWE'))]
dbtable = db.uploads
record = None
record = db(db.dataset.id == request.args[0],ignore_common_filters=True).select().first()
form = FORM(dbtable, INPUT(_name='up_files', _type='file',
_multiple=True, requires=IS_NOT_EMPTY()),INPUT(_type='submit'))
# The multiple param lets us choose multiple files.
if form.process().accepted:
#onvalidation checks the uploaded files to make sure they are only txt, config, or log.
makeThumbnail(dbtable,form.vars.id,(300,300))
response.flash = 'files uploaded'
files = request.vars['up_files']
if not isinstance(files, list):
#convert files to a list if they are not one already.
files = [files]
for file in files:
db.uploads.insert(dataset=record.id, filename=file.filename, image=db.uploads.image.store(file, file.filename))
#store is a FIELD method that let's you save a file to disk. you can choose the directory if you want using the 'path' param.
else:
response.flash = 'Choose the Files you would like to upload'
return dict(form=form, record=record)
そしてビュー:
{{extend 'layout.html'}}
<h4>Manage Image of dataset: {{=record.name}}</h4>
{{if images:}}
<div style="overflow: auto;" width="80%">
<table>
<tr> <th> Image </th> </tr>
{{
for image in images:
=TR(TD(image.filename), IMG(_src=URL('default', 'download', args=image.thumb)), A(str(T('View')),_href=URL("show", args=[image.id,rowId])), A(str(T('Delete')),_href=URL('deleteImage',args=image.id)))}}
{{pass}}
</table>
</div>
{{pass}}
注:画像のリストに各画像のサムネイルを表示しようとしています(ビューを参照)。サムネイルが表示されませんが、代わりに小さな疑問符が表示されます。PS: 画像をアップロードできません。疑問符の代わりに画像が必要です。insertImage() 関数とビューで何か問題があります。助けてくれてありがとう!