Featured post

c# - Usage of Server Side Controls in MVC Frame work -

-
i using asp.net 4.0 , mvc 2.0 web application. project requiremrnt have use server side control in application not possibl in noraml case. ideally want use adrotator control , datalist control. i saw few samples , references in codepleax mvc controllib howwver found less useful. can tell how utilize theese controls in asp.net application along mvc. note: please provide functionalities related adrotator , datalist controls not equivalent functionalities thanks in advace. mvc pages not use normal .net solution makes use of normal .net components impossible. a normal .net page use event driven solution call different methods service side mvc use actions , view completly different way handle things. also, mvc not use viewstate normal .net controlls require. found article discussing mixing of normal .net , mvc.
3 comments

php - Session issue with unset() and the browser back button -

-

i'm using session variable set pre-allocated record id postgres (getting record id sequence) using pear's db nextid(). set id session variable because of scoping issues in legacy code i'm working with. after insert happens use unset() remove session variable (this clear used record id). there more information in session remains intact, it's next_id element being removed.

pseudo code:

// next id , set session $_session['next_id'] = $db->nextid();  ... more code here  // after insert unset($_session['next_id']);

my question is, clicking button on browser somehow reset session variable $_session['next_id']? maybe causing null? how cache handle session after element has been removed user has returned previous state?

edit: reason question code in production randomly (by user) trying insert null record id (which next_id session). trying debug process code minimal, reviewed peers , has stumped us???

edit 2: wow guess there issue how i'm using session variable. i'll explain as can why chose method. first code in process on being rewritten php 4, current production version php 4 ton newly added module code in php 5. reason chose session variable because of scoping issue need hard coded on several hundred pages of legacy code or on 1 page , cast value session pages have access to. (well boss pays salary option chose). original problem (my boss) wanted display id end user before insertion of information. hence pear db call nextid(). use postgresql , i'm using record id sequence ensure next id unique , allocated end user (no duplicates postgres handles locking in sequence). end user can navigate multiple pages during process, scoping issue. using session , retrieving next id validation , checks 50 lines of code whole process instead of thousands of lines of code have been written correct way. again not code in first place, making best solution @ least possible cost.

if have another, better, greater, easier, cheaper solution feel free post away. if you're going piss on decision how code, please pay bills , agree following better coding standard,practices,solution.

can't imagine scenario need store nextid() in session used on next page.

as webbiedave pointed out - $_session stored on server, no - hitting button not "reset" session variable.

but, if user hits refresh on second page (the 1 cleared _session variable) script launched again, next_id set null (because set nextid() on previous page)

the same happen if user hits button , previous page loaded browser cache - no request server, no next_id variable in _session.

but still, there wrong if store nextid() in _session.


Comments

Post a Comment

Popular posts from this blog

c# - Usage of Server Side Controls in MVC Frame work -

-
i using asp.net 4.0 , mvc 2.0 web application. project requiremrnt have use server side control in application not possibl in noraml case. ideally want use adrotator control , datalist control. i saw few samples , references in codepleax mvc controllib howwver found less useful. can tell how utilize theese controls in asp.net application along mvc. note: please provide functionalities related adrotator , datalist controls not equivalent functionalities thanks in advace. mvc pages not use normal .net solution makes use of normal .net components impossible. a normal .net page use event driven solution call different methods service side mvc use actions , view completly different way handle things. also, mvc not use viewstate normal .net controlls require. found article discussing mixing of normal .net , mvc.
Read more

ios - Very simple iPhone App crashes on UILabel settext -

-
i have simple application. have button , label in ib. have ibaction onclick calls settext on label. there's outlet label. connected in ib. crashes app first time in simulator. when launch again, sets text. crashes again next time. crashes on actual device. should simple, i'm not sure i'm doing wrong. thanks. in .h file : #import <uikit/uikit.h> @interface untitledviewcontroller : uiviewcontroller { iboutlet uilabel *label; iboutlet uibutton *button; } @property (nonatomic, retain) uilabel *label; -(ibaction) onclick1: (id) sender; @end and in .m: - (ibaction) onclick1: (id) sender { //[label settext:@"hello world!"]; label.text = @"hello world!"; //[button settitle:@"clicked" forstate:uicontrolstatenormal]; } sorry, i'm new site. how crash log , stack? thanks. edit : while answer technically correct, doesn't answer question @ :( sorry < warning - guess > if you're...
Read more

mysql - Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause? -

-
why there can 1 timestamp column current_timestamp in default or on update clause? create table `foo` ( `productid` int(10) unsigned not null, `addeddate` timestamp not null default current_timestamp, `updateddate` timestamp not null default current_timestamp on update current_timestamp ) engine=innodb; the error results: error code : 1293 incorrect table definition; there can 1 timestamp column current_timestamp in default or on update clause this limitation, due historical, code legacy reasons, has been lifted in recent versions of mysql: changes in mysql 5.6.5 (2012-04-10, milestone 8) previously, @ 1 timestamp column per table automatically initialized or updated current date , time. restriction has been lifted. timestamp column definition can have combination of default current_timestamp , on update current_timestamp clauses. in addition, these clauses can used datetime column definitions. more information, see automati...
Read more