Peter,

I tried your fix with no luck. It did not work unfortunately.

Massimo,

I replaced the lines you specified with no luck. It never printed out 
computing. What should we try to next to debug this?

Brandon

On Tuesday, June 19, 2012 8:28:20 AM UTC-6, Massimo Di Pierro wrote:
>
> I need your help debugging this. In dal.py there are these lines:
>
>     def _listify(self,fields,update=False):
>         for ofield in self:
>             if not ofield.name in new_fields_names and ofield.compute:
>                 try:
>                     new_fields.append((ofield,ofield.compute(Row(fields))))
>                 except KeyError:
>                     pass
>
> The line new_fields.append((ofield,ofield.compute(Row(fields)))) should 
> always be called (insert and update). Can you try remove the try... 
> except.. 
>
>     def _listify(self,fields,update=False):
>         for ofield in self:
>             if not ofield.name in new_fields_names and ofield.compute:
>                 #try:
>                     print 'computing',ofield.name
>                     new_fields.append((ofield,ofield.compute(Row(fields))))
>                 #except KeyError:
>                 #   pass
>
> and see what you get?
>
>
> On Tuesday, 19 June 2012 08:35:19 UTC-5, LightDot wrote:
>>
>> I think this is closely connected to an existing Issue 687 (Compute= 
>> should work always, not once):
>>
>> http://code.google.com/p/web2py/issues/detail?id=687
>>
>> Regards
>>
>> On Monday, June 18, 2012 11:21:57 PM UTC+2, peter wrote:
>>>
>>> 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
>>>>>>>
>>>>>>

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