On Saturday, April 20, 2019 at 8:52:01 AM UTC-4, icodk wrote:
>
> Hi Antony
>
> My selectable looks like :
>
> selectable = [('Add 100 to price',lambda ids: redirect(URL('product',
> 'modify_price', args=request.args, vars=dict(id=ids, inc=100)))),
>
>
Why do a redirect rather than simply doing the work in the same function?
Also, this redirect puts the ids in the URL query string, resulting in the
ultimate update being a GET request rather than a POST -- this is
undesirable because a refresh of that page will result in the entire
operation being repeated, which you don't want.
>
> and my function in the product controller looks like this:
>
> def modify_price():
>
> if type(request.vars.id) is str:
>
> id_list = request.vars.id.split(',') #convertint to list
>
> else:
>
> id_list = request.vars.id
>
> db(db.product.id.belongs(id_list)).update(product_price=db.product.product_price+request.vars.inc)
>
>
> Simply following the documentation in the book
>
> I also tried:
>
> selectable= lambda ids: modify_price
>
>
> But the function neve called
>
It's not that the function never gets called but that the function is not
written to work this way. The function expects to find ids in
request.vars.id, but that is actually None in the case where you call it
this way (the real values are in request.vars.records). Is modify_price a
controller action that needs to be accessible separately from this
particular operation? If not, just make it a helper function that accepts
an "ids" argument, and set selectable=modify_price.
Anthony
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