Server globals

[Alex Tweedly]

Hi Tim,

I think there are many easy ways to do this - and many not-so-easy ones too.

IMO, easiest for something simple like this is to just use the url.

See tweedly.net/page_by_url.txt for the code, or try it out at 
tweedly.net/page_by_url.lc

(or try tweedly.net/page_by_url.lc?row=14 )

You can do something very similar using a cookie, with the 'row' value 
stored in the cookie each time (remember to "put cookie ..." before 
*any* other output.)

Or by using the cookie to hold the name of a file in which you store 
this kind of info. This is necessary if you need to store a lot of data 
- if there is not already a cookie, create a filename using something 
like uuid(), and store the file name in it - then retrieve the cookie, 
and read or write the file.

Alex.

On 12/08/2022 14:18, Tim Selander via use-livecode wrote:
> Hi Matthias,
>
> It is user specific, but I just tried the saving to a text file on the 
> server -- very fast. Got the user IP from $_Server, and used that in 
> the filename for easy later retrieval. How much data can a cookie 
> hold? Guess I'll test that.
>
> One of the reasons I'm fussing with this is I'm trying to come up with 
> some kind of pagination system. I'm probably trying to re-invent the 
> wheel -- badly.
>
> It's a simple membership list, with a few hundred records. Only want 
> to show 30 on the page at a time. I wonder if anyone has a LC sample 
> for doing that. I tried Ralph Bitter's Revigniter but just can't wrap 
> my head around it.
>
> Using MySQL for testing, so could try to figure out using the CURSOR 
> feature. But know nothing about avoiding injection attacks, so may 
> fall back to using  a .csv for the datafile. I've done that for all my 
> other projects....
>
> Anyway, thanks for the info; no global variables, but file saves look 
> like they'll work!
>
> Tim
>
> On 2022.08.12 21:26, matthias rebbe via use-livecode wrote:
>> Hi Tim,
>>
>> does the variable have a user specific value or a value, that changes 
>> from time to time, but is the same for all users?
>>
>> I've done something some time ago and used a text file on the server 
>> which stored that value. In my case the value was not user specific 
>> so it was an easy task.
>>
>>
>> If the variable is user specific, why don't you use a  cookies for 
>> that? That will grant that the value is available  at all pages in 
>> the same domain.
>>
>> Regards,
>> Matthias
>>
>>
>>> Am 12.08.2022 um 13:27 schrieb Tim Selander via use-livecode 
>>> <use-livecode at lists.runrev.com>:
>>>
>>> As always, appreciate everyone's help.
>>>
>>> Have made several little projects using LC Server on the on-rev.com 
>>> host. For the first time, I would like a global variable -- that is 
>>> a variable that would retain it's value even if the page is 
>>> re-loaded. Or if a user goes to another .lc page/file in the domain.
>>>
>>> All my playing around, and Googling around, has been for nought. Is 
>>> there a way to hang on to a bit of data was you move around pages in 
>>> the same domain?
>>>
>>> Thanks.
>>>
>>> Tim Selander
>>> Tokyo, Japan
>>>
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