I ended up updating the database fields in the callback function in web2py
controller, then return a True to indicate ajax to do a location.reload()
to render the page. it does what I need. Apologize for all these questions
and answers myself, but I thought i would share with someone who may need
it later. Thanks and case close.
On Wednesday, June 7, 2017 at 1:15:15 PM UTC+8, Rudy wrote:
>
> I just used the firefox inspector to see the source and spot the id and
> tag I need to get the non-writable field value, something like below:
> var quote_id = jQuery('#quotation_id__row').children("p")[0].innerHTML;
>
> Apologize for any bother, I am still learning a lot of stuffs eg. web2py,
> javascript, even python. Often times I see other experience coders here to
> leverage the API http://web2py.readthedocs.io/en/latest/index.html. For
> this particular question, i thought I could find something from web2py to
> toggle, so that i could read the value of an non-writable field, i went to
> this above API link and did a search for FORM writable, but i didn't see
> where it's building the HTML from web2py engine. Any basic guideline or
> instruction how i can leverage this APIs. Sorry if it sounds dumb.
>
> Now I can read the non-writable field from a FORM, I want javascript to
> make a callback and return a json to update a few fields (non-writable)
> fields in the FORM. Wonder what's the best way to do it, since they are
> non-writable I can see from the firefox inspector that non-writable and
> writable fields are structured like below with HTML elements. BTW, i could
> retrieve the right data from jason and print them out using alert, but I
> couldn't update the non-writable fields. Do I need to alter the HTML
> elements for those non-writable fields to writable HTML element structure,
> and reverse them back right after I update them? Any suggestion is
> appreciated.
>
>
>
> <https://lh3.googleusercontent.com/-eusFTb0OJlU/WTeIv6CjtrI/AAAAAAAAAyg/ACVL2hJG78UamFeUiATDSWTfq4g2K0DXACLcB/s1600/non-writable.png>
>
> <https://lh3.googleusercontent.com/-Wu9qWqnPkYo/WTeJDf-8lAI/AAAAAAAAAyk/sywnenXTOVcQJk_bjdNQeUunYLG9K6yJgCLcB/s1600/writable.png>
>
>
>
>
>
>
>
>
> On Wednesday, June 7, 2017 at 7:49:39 AM UTC+8, Rudy wrote:
>>
>> I posted a question a couple days ago asking how I can read a SQLFORM's
>> field and update it using javascript when its writable=False (because user
>> is not supposed to make change to the subtotal field manually, it should be
>> calculated based on the sum of all the items), but I didn't get any reply.
>> Now I wonder if anyone can share your insight how i can read a SQLFORM
>> field which writable=False, thanks in advance!
>>
>
--
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