I would try removing the readable and writeable false for the compute
fields. It seems that it does automatically not show them. I found that
setting readable and writeable to False means the thumbs only get computed
on insert, not update. I reported this a while back.
Peter
On Monday, 18 June 2012 22:14:09 UTC+1, Massimo Di Pierro wrote:
>
> Will look into this asap. Please open a ticket about it so that it is
> tracked.
>
>
> On Monday, 18 June 2012 14:40:30 UTC-5, Brandon Reynolds wrote:
>>
>> In a new record a thumbnail is correctly generated from photo. But if I
>> didn't upload a photo or want to change the photo the thumbnail doesn't
>> generate. So basically a new record works properly but when updating
>> nothing in the thumbnail changes at all whether or not is currently has a
>> photo in it.
>>
>> ____________________________________________________
>> model:
>>
>> from image import THUMBER
>> db.define_table('park',
>> Field('photo1', 'upload'),
>> Field('photo_thumb1', 'upload', readable=False, writable=False))
>>
>> db.park.photo_thumb1.compute = lambda row: THUMBER(row.photo1,
>> "photo_thumb1", 144, 115)
>>
>> ____________________________________________________
>> image.py:
>>
>> from gluon import current
>>
>> def THUMBER(image, db_photo_var, nx=120, ny=120, name='thumb'):
>> if image:
>> try:
>> request = current.request
>> from PIL import Image
>> import os
>> img = Image.open(request.folder + 'uploads/' + image)
>> img.db_photo_var((nx, ny), Image.ANTIALIAS)
>> root, ext = os.path.splitext(image)
>> thumb = '%s_%s%s' % (root, name, ext)
>> img.save(request.folder + 'uploads/' + thumb)
>> return thumb
>> except Exception:
>> return image
>>
>>
>>
>> On Monday, June 18, 2012 1:17:07 PM UTC-6, Massimo Di Pierro wrote:
>>>
>>> Let me understand this better.
>>>
>>> on insert, the thumbnails are created.
>>> on update, if you upload a new photo1 is photo_thing1 generated?
>>>
>>> Can you provide a simpler code to reproduce the problem with a just one
>>> upload field and one thumbnail field?
>>>
>>> massimo
>>>
>>>
>>>
>>>
>>> On Monday, 18 June 2012 11:24:05 UTC-5, Brandon Reynolds wrote:
>>>>
>>>> I have this problem when i try to generate thumbnails. If the field is
>>>> empty it inserts the photo thumb into the thumbnail. But when i try to
>>>> update that record the thumbnail doesn't change.
>>>>
>>>> Here is my model:
>>>>
>>>> # coding: utf8
>>>> from image import THUMBER
>>>>
>>>> db.define_table('park',
>>>> Field('park_name', requires=IS_NOT_EMPTY()),
>>>> Field('park_city', requires=IS_NOT_EMPTY()),
>>>> Field('park_state', requires=IS_NOT_EMPTY()),
>>>> Field('park_address', requires=IS_NOT_EMPTY()),
>>>> Field('park_zip', requires=IS_NOT_EMPTY()),
>>>> Field('country', default="USA", notnull=True, readable=False,
>>>> writable=False),
>>>> Field('park_phone', requires=IS_MATCH('[\d\-\(\) ]+')),
>>>> Field('park_fax', requires=IS_EMPTY_OR(IS_MATCH('[\d\-\(\) ]+'))),
>>>> Field('park_phone_2', 'string',
>>>> requires=IS_EMPTY_OR(IS_MATCH('[\d\-\(\) ]+'))),
>>>> Field('photo1', 'upload'),
>>>> Field('photo_thumb1', 'upload', readable=False, writable=False),
>>>> Field('photo2', 'upload'),
>>>> Field('photo_thumb2', 'upload', readable=False, writable=False),
>>>> Field('photo3', 'upload'),
>>>> Field('photo_thumb3', 'upload', readable=False, writable=False),
>>>> Field('photo4', 'upload'),
>>>> Field('photo_thumb4', 'upload', readable=False, writable=False),
>>>> Field('photo5', 'upload'),
>>>> Field('photo_thumb5', 'upload', readable=False, writable=False),
>>>> Field('manager', requires=IS_NOT_EMPTY()),
>>>> Field('manager_email', requires=IS_EMAIL()),
>>>> Field('spaces', 'integer', requires=IS_NOT_EMPTY()),
>>>> Field('vacant', 'integer'),
>>>> Field('lot_rent', 'integer', requires=IS_NOT_EMPTY()),
>>>> Field('water', 'boolean'),
>>>> Field('sewer', 'boolean'),
>>>> Field('trash', 'boolean'),
>>>> Field('pool', 'boolean'),
>>>> Field('playground', 'boolean'),
>>>> Field('clubhouse', 'boolean'),
>>>> Field('laundromat', 'boolean'),
>>>> Field('rv_spaces', 'boolean'),
>>>> Field('storage', 'boolean'),
>>>> Field('handicap_accessible', 'boolean'),
>>>> Field('community_description', 'text'),
>>>> format='%(park_name)s')
>>>>
>>>> db.define_table('home',
>>>> Field('pid', notnull=True, readable=False, writable=False),
>>>> Field('lot'),
>>>> Field('year', length=4, requires=IS_NOT_EMPTY()),
>>>> Field('make'),
>>>> Field('model'),
>>>> Field('width', requires=IS_NOT_EMPTY()),
>>>> Field('length', requires=IS_NOT_EMPTY()),
>>>> Field('wide', requires=IS_NOT_EMPTY()),
>>>> Field('for_sale', 'boolean', default=True),
>>>> Field('beds', requires=IS_NOT_EMPTY()),
>>>> Field('baths', requires=IS_NOT_EMPTY()),
>>>> Field('fridge', 'boolean'),
>>>> Field('stove', 'boolean'),
>>>> Field('dishwasher', 'boolean'),
>>>> Field('microwave', 'boolean'),
>>>> Field('washer', 'boolean'),
>>>> Field('dryer', 'boolean'),
>>>> Field('photo1', 'upload'),
>>>> Field('photo1_text'),
>>>> Field('photo_thumb1', 'upload', readable=False, writable=False),
>>>> Field('photo2', 'upload'),
>>>> Field('photo2_text'),
>>>> Field('photo_thumb2', 'upload', readable=False, writable=False),
>>>> Field('photo3', 'upload'),
>>>> Field('photo3_text'),
>>>> Field('photo_thumb3', 'upload', readable=False, writable=False),
>>>> Field('photo4', 'upload'),
>>>> Field('photo4_text'),
>>>> Field('photo_thumb4', 'upload', readable=False, writable=False),
>>>> Field('photo5', 'upload'),
>>>> Field('photo5_text'),
>>>> Field('photo_thumb5', 'upload', readable=False, writable=False),
>>>> Field('price',requires=IS_NOT_EMPTY()),
>>>> Field('description', 'text', requires=IS_NOT_EMPTY()),
>>>> Field('posted_on', 'datetime', readable=False, writable=False))
>>>>
>>>> db.define_table('state',
>>>> Field('name'),
>>>> Field('full_name'))
>>>>
>>>> db.define_table('wide',
>>>> Field('type'),
>>>> format='%(type)s')
>>>>
>>>>
>>>> db.park.park_state.requires = IS_IN_DB(db, 'state.name',
>>>> '%(full_name)s (%(name)s)', zero=T('Select State'))
>>>> db.home.wide.requires = IS_IN_DB(db, 'wide.type', '%(type)s',
>>>> zero=T('Select Home Type'))
>>>>
>>>> db.park.photo_thumb1.compute = lambda row: THUMBER(row.photo1,
>>>> "photo_thumb1", 144, 115)
>>>> db.park.photo_thumb2.compute = lambda row: THUMBER(row.photo2,
>>>> "photo_thumb2", 144, 115)
>>>> db.park.photo_thumb3.compute = lambda row: THUMBER(row.photo3,
>>>> "photo_thumb3", 144, 115)
>>>> db.park.photo_thumb4.compute = lambda row: THUMBER(row.photo4,
>>>> "photo_thumb4", 144, 115)
>>>> db.park.photo_thumb5.compute = lambda row: THUMBER(row.photo5,
>>>> "photo_thumb5", 144, 115)
>>>> db.home.photo_thumb1.compute = lambda row: THUMBER(row.photo1,
>>>> "photo_thumb1", 144, 115)
>>>> db.home.photo_thumb2.compute = lambda row: THUMBER(row.photo2,
>>>> "photo_thumb2", 144, 115)
>>>> db.home.photo_thumb3.compute = lambda row: THUMBER(row.photo3,
>>>> "photo_thumb3", 144, 115)
>>>> db.home.photo_thumb4.compute = lambda row: THUMBER(row.photo4,
>>>> "photo_thumb4", 144, 115)
>>>> db.home.photo_thumb5.compute = lambda row: THUMBER(row.photo5,
>>>> "photo_thumb5", 144, 115)
>>>>
>>>>
>>>> Here is my controller:
>>>>
>>>> def index():
>>>> return locals()
>>>>
>>>> def parks():
>>>> if request.args(0):
>>>> parks =
>>>> db(db.park.park_state==request.args(0)).select(orderby=db.park.park_city|db.park.park_name)
>>>> else:
>>>> parks =
>>>> db(db.park).select(orderby=db.park.park_state|db.park.park_city|db.park.park_name)
>>>> return locals()
>>>>
>>>> def park():
>>>> park = db.park(request.args(0)) or redirect(URL('parks'))
>>>> homes = db(db.home.pid==(request.args(0))).select(orderby=
>>>> db.home.id)
>>>> return locals()
>>>>
>>>> def home():
>>>> home = db.home(request.args(0)) or redirect(URL('parks'))
>>>> park = db.park(home.pid)
>>>> return locals()
>>>>
>>>> def home_feed():
>>>> home = db(db.home).select(orderby=db.home.id)
>>>> return locals()
>>>>
>>>> @auth.requires_membership('Admin')
>>>> def new_park():
>>>> form = crud.create(db.park, next='park/[id]')
>>>> return locals()
>>>>
>>>> @auth.requires_membership('Admin')
>>>> def new_home():
>>>> db.home.pid.default = request.args(0) or redirect(URL('parks'))
>>>> db.home.price.default = "$0000.00"
>>>> db.home.posted_on.default = request.now
>>>> form = crud.create(db.home, next='home/[id]')
>>>> return locals()
>>>>
>>>> @auth.requires_membership('Admin')
>>>> def edit_park():
>>>> park = db.park(request.args(0)) or redirect(URL('parks'))
>>>> form = crud.update(db.park, park, next='park/[id]')
>>>> return locals()
>>>>
>>>>
>>>> @auth.requires_membership('Admin')
>>>> def edit_home():
>>>> home = db.home(request.args(0)) or redirect(URL('parks'))
>>>> form = crud.update(db.home, home, next='home/[id]')
>>>> return locals()
>>>>
>>>> def about_us():
>>>> return locals()
>>>>
>>>> def employment_opportunities():
>>>> return locals()
>>>>
>>>> def park_management():
>>>> return locals()
>>>>
>>>> def make_park_thumbs():
>>>> from image import THUMBER
>>>> parks=db(db.park).select(orderby=db.park.park_state)
>>>> for park in parks:
>>>> park.update_record(photo_thumb1 = THUMBER(park.photo1, "photo_thumb1",
>>>> 144, 115))
>>>> park.update_record(photo_thumb2 = THUMBER(park.photo2, "photo_thumb2",
>>>> 144, 115))
>>>> park.update_record(photo_thumb3 = THUMBER(park.photo3, "photo_thumb3",
>>>> 144, 115))
>>>> park.update_record(photo_thumb4 = THUMBER(park.photo4, "photo_thumb4",
>>>> 144, 115))
>>>> park.update_record(photo_thumb5 = THUMBER(park.photo5, "photo_thumb5",
>>>> 144, 115))
>>>> db.commit()
>>>>
>>>>
>>>> Here is the THUMBER function
>>>> from gluon import current
>>>>
>>>> def THUMBER(image, db_photo_var, nx=120, ny=120, name='thumb'):
>>>> if image:
>>>> try:
>>>> request = current.request
>>>> from PIL import Image
>>>> import os
>>>> img = Image.open(request.folder + 'uploads/' + image)
>>>> img.db_photo_var((nx, ny), Image.ANTIALIAS)
>>>> root, ext = os.path.splitext(image)
>>>> thumb = '%s_%s%s' % (root, name, ext)
>>>> img.save(request.folder + 'uploads/' + thumb)
>>>> return thumb
>>>> except Exception:
>>>> return image
>>>>
>>>>
>>>> What should i do to get these working on update? At the bottom of the
>>>> controller you will notice a the make_park_thumbs() function. That was one
>>>> way of try to fix this and having it set to run on updates. However won't
>>>> generate a thumbnail it just returns the original photo. This would work
>>>> if
>>>> you can tell why that function won't work. Let me know what to do.
>>>>
>>>> Braandon
>>>>
>>>
