[web2py] Re: Is it possible to write a virtual method field that modifies the row?
def change_name(row, name):
row.person.update_record(name=name)
The above will update the database and the local Row object.
Anthony
On Friday, April 26, 2019 at 5:00:34 PM UTC-4, Lisandro wrote:
>
> Hi Anthony, thank you for your time.
> I tried the method you suggested, but here is my problem: after calling
> the method, the row object isn't updated.
>
> row = db.person(1)
> row.change_name('Lisandro')
> print(row.name)
>
> This doesn't print "Lisandro".
> Instead, it prints the name the person had before the call.
> If I want to print the new name, I have to retrieve the row again like
> this:
>
> row = db.person(1)
> row.change_name('Lisandro')
> row = db.person(1)
> print(row.name)
>
> I was wondering if it was possible to avoid having to retrieve the record
> again.
>
>
> El viernes, 26 de abril de 2019, 17:16:10 (UTC-3), Anthony escribió:
>>
>> def change_name(row, name):
>> db(db.person.id == row.person.id).update(name=name)
>>
>> db.define_table('person',
>> Field('name'),
>> Field.Method('change_name', change_name))
>>
>> row = db.person(1)
>> row.change_name('Lisandro')
>>
>> Anthony
>>
>> On Friday, April 26, 2019 at 12:21:28 PM UTC-4, Lisandro wrote:
>>>
>>> I've been working with Virtual Fields for a while, but now I'm
>>> wondering, how could I write a Virtual Field method that modifies the row
>>> itself?
>>>
>>> I mean, I would like to do something similar that what the
>>> .update_record() method does. When you call row.update_record(), the row
>>> object is updated with the new values.
>>>
>>> I've tried returning the row object in the method definition function
>>> but it doesn't work.
>>>
>>> I'm wondering, is it even possible to implement something like that? Any
>>> comment or suggestion will be much appreciated.
>>>
>>> Thanks!
>>> Warm regards,
>>> Lisandro.
>>>
>>
--
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- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
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[web2py] Re: Is it possible to write a virtual method field that modifies the row?
Hi Anthony, thank you for your time.
I tried the method you suggested, but here is my problem: after calling the
method, the row object isn't updated.
row = db.person(1)
row.change_name('Lisandro')
print(row.name)
This doesn't print "Lisandro".
Instead, it prints the name the person had before the call.
If I want to print the new name, I have to retrieve the row again like this:
row = db.person(1)
row.change_name('Lisandro')
row = db.person(1)
print(row.name)
I was wondering if it was possible to avoid having to retrieve the record
again.
El viernes, 26 de abril de 2019, 17:16:10 (UTC-3), Anthony escribió:
>
> def change_name(row, name):
> db(db.person.id == row.person.id).update(name=name)
>
> db.define_table('person',
> Field('name'),
> Field.Method('change_name', change_name))
>
> row = db.person(1)
> row.change_name('Lisandro')
>
> Anthony
>
> On Friday, April 26, 2019 at 12:21:28 PM UTC-4, Lisandro wrote:
>>
>> I've been working with Virtual Fields for a while, but now I'm wondering,
>> how could I write a Virtual Field method that modifies the row itself?
>>
>> I mean, I would like to do something similar that what the
>> .update_record() method does. When you call row.update_record(), the row
>> object is updated with the new values.
>>
>> I've tried returning the row object in the method definition function but
>> it doesn't work.
>>
>> I'm wondering, is it even possible to implement something like that? Any
>> comment or suggestion will be much appreciated.
>>
>> Thanks!
>> Warm regards,
>> Lisandro.
>>
>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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[web2py] Re: Is it possible to write a virtual method field that modifies the row?
def change_name(row, name):
db(db.person.id == row.person.id).update(name=name)
db.define_table('person',
Field('name'),
Field.Method('change_name', change_name))
row = db.person(1)
row.change_name('Lisandro')
Anthony
On Friday, April 26, 2019 at 12:21:28 PM UTC-4, Lisandro wrote:
>
> I've been working with Virtual Fields for a while, but now I'm wondering,
> how could I write a Virtual Field method that modifies the row itself?
>
> I mean, I would like to do something similar that what the
> .update_record() method does. When you call row.update_record(), the row
> object is updated with the new values.
>
> I've tried returning the row object in the method definition function but
> it doesn't work.
>
> I'm wondering, is it even possible to implement something like that? Any
> comment or suggestion will be much appreciated.
>
> Thanks!
> Warm regards,
> Lisandro.
>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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