It's work!
Thanks!
Anthony於 2016年3月1日星期二 UTC+8上午2時24分48秒寫道：
>
> The default value should be the file name, but you don't have to set it
> when you define the table in the model. Instead, set the default in the
> controller right *before* you create the form:
>
> db.project.project_pdf.default = the_file_name
>
> Simply setting form.vars.project_pdf will not work.
>
> Anthony
>
> On Monday, February 29, 2016 at 2:32:55 AM UTC-5, killzane wrote:
>>
>> So if I have this field in db.project
>> Field('project_pdf', 'upload', label='Project PDF', comment='',
>> uploadfolder='app/uploads'),
>>
>> I must change to
>> Field('project_pdf', 'upload', label='Project PDF', comment='',
>> uploadfolder='app/uploads', default=''),
>> what content should I put in "default" attribute?
>> the file name? or folder path?
>> records have same folder path but different file name.
>>
>> Even if I change "form.var.project_pdf", the link button won't appear?
>>
>>
>> Anthony於 2016年2月29日星期一 UTC+8上午8時51分27秒寫道：
>>>
>>> The widget gets created when the form is initialized, so if you want to
>>> specify a value for the file URL, you should do it by setting the "default"
>>> attribute of the upload field in the db.project table *before* creating
>>> the table.
>>>
>>> Anthony
>>>
>>> On Sunday, February 28, 2016 at 10:07:28 AM UTC-5, killzane wrote:
>>>>
>>>> I want to modify a record from db.project, and there are a reference
>>>> field in db.project.
>>>> So I use SQLFORM.factory to add field to put reference list name.
>>>>
>>>> the code I paste is simplify version
>>>> here is full code
>>>> project = db((db.project.id == 1) & (db.frature.project_id ==
>>>> 1)).select(db.project.ALL, db.feature.ALL).first()
>>>>
>>>> form = SQLFORM.factory(Field('list_name', 'string', label='List Name'),
>>>> db.project, db.feature, table_name='project',upload=URL('download'))
>>>>
>>>> for t in [db.project, db.project_feature]:
>>>> query = t.id == project.id if t == db.project else t.project_id ==
>>>> project.id
>>>> __copydata(db(query).select(limitby=(0,1)).first(), form.vars,
>>>> t.fields)
>>>>
>>>> so, that me ask another question:
>>>> How to make SQLFORM.widgets.upload.widget work.
>>>> I mean make the link button appear.
>>>> what content I need to put in form.var?
>>>>
>>>> Anthony於 2016年2月28日星期日 UTC+8下午9時29分52秒寫道：
>>>>>
>>>>> Sorry, still not clear what you are trying to do, and you have not
>>>>> explained why you are iterating over the Fields of the db.project table.
>>>>>
>>>>> On Sunday, February 28, 2016 at 3:48:26 AM UTC-5, killzane wrote:
>>>>>>
>>>>>> Because I want to add other field to the form so I use
>>>>>> SQLFORM.factory.
>>>>>>
>>>>>> And this is my __copydata method
>>>>>> def __copydata(src, dest, fields):
>>>>>> if src:
>>>>>> for k in fields:
>>>>>> if src.has_key(k):
>>>>>> dest[k] = src[k]
>>>>>> return dict()
>>>>>>
>>>>>>
>>>>>>
>>>>>> Anthony於 2016年2月26日星期五 UTC+8下午9時08分13秒寫道：
>>>>>>>
>>>>>>>
>>>>>>> for t in db.project:
>>>>>>>> query = (t.id == request.vars.id)
>>>>>>>> __copydata(db(query).select(limitby=(0,1)).first(), form.vars,
>>>>>>>> t.fields)
>>>>>>>>
>>>>>>>
>>>>>>> The above is confusing and cannot be the actual code, as it would
>>>>>>> raise an exception. When you iterate over db.project, you get its Field
>>>>>>> objects (so each value of "t" is a Field object). Field objects do not
>>>>>>> have
>>>>>>> ".id" or ".fields" attributes, so both of the next two lines would
>>>>>>> result
>>>>>>> in errors. Perhaps you instead mean to be iterating over Table objects,
>>>>>>> but
>>>>>>> it's not clear why you would be doing that, as the form is based on
>>>>>>> just a
>>>>>>> single table.
>>>>>>>
>>>>>>> Anthony
>>>>>>>
>>>>>>
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