On Thursday, December 27, 2018 at 4:05:40 PM UTC-5, Vlad wrote:
>
> Here is a test function in my controller:
>
> def test():
> id = 0
> try:
> id = request.args(0, cast=int)
> session.flash = "Here is the id: " + str(id)
> except:
> session.flash = "ID is not valid!"
> pass
> if id==0:
> redirect(URL('home'))
> query = db.test_table.id == id
> grid = SQLFORM.grid(query, db.test_table, user_signature=False)
> return locals()
>
Regarding the flash message, you should be setting response.flash, not
session.flash (the latter goes in the session and will not be displayed
until the *next *request, as you have observed -- it is typically used just
before a redirect).
What are you attempting to do with this function? Why are you even using
the grid if you are only intending to display a single record?
Note, your code does nothing in case the request.args(0) is not a valid
integer -- in that case, your function still returns a grid (though
presumably using a query you don't want). You might instead want to do a
redirect in that case.
Also, if your function is going to make use of some of the URL args, you
must indicate this to the grid by passing in the URL args it is supposed to
use (via the "args" argument).
Finally, actions other than reading data require either a logged in user or
user_signature=False.
Anthony
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