Where Do You Put Your Error Checking Code?
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Where Do You Put Your Error Checking Code?
by Ian Rutherford
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When you are writing your code, where do you handle error checking?
Do you handle it with Javascript on the front end? With code before you hand the data to a CFC, in CFCs, in your T-SQL code? Or do you duplicate the error checking at each step along the way? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308254 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Jerry Johnson
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All of the above.
The more user-friendly code and descriptions happen on the same page via js checks. The sql code typically throws a generic error. And the stuff in between is somewhere in the middle. On Fri, Jun 27, 2008 at 3:20 PM, Ian Rutherford < webmaster@...> wrote: > When you are writing your code, where do you handle error checking? > > Do you handle it with Javascript on the front end? With code before you > hand the data to a CFC, in CFCs, in your T-SQL code? Or do you duplicate the > error checking at each step along the way? > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308255 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Dominic Watson
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I personally never use js for validation; I always do it server side. I make
sure the database has its own validation checking (using constraints, etc) and I also check the submitted data with ColdFusion before sending it to the database. Dominic 2008/6/27 Jerry Johnson <jmiloj@...>: > All of the above. > > The more user-friendly code and descriptions happen on the same page via js > checks. > The sql code typically throws a generic error. > > And the stuff in between is somewhere in the middle. > > On Fri, Jun 27, 2008 at 3:20 PM, Ian Rutherford < > webmaster@...> wrote: > > > When you are writing your code, where do you handle error checking? > > > > Do you handle it with Javascript on the front end? With code before you > > hand the data to a CFC, in CFCs, in your T-SQL code? Or do you duplicate > the > > error checking at each step along the way? > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308256 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Barney Boisvert
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Full validation is mandatory on the server-side. Client-side
validation can smooth the user experience, but that's all it does. Your web layer should ensure everything is syntactically valid and do any necessary conversions. For example, if I submit a birth date via a form, the actual form parameter is a string, so it needs to be converted. That hands off to your business layer where semantic validation should happen (birth date is before death date, both are in the past, etc.). By the time you get to the data layer, almost no validation should be happening. The notable exception is stuff like uniqueness constraints and the like. Using JS for validation, especially combined with AJAX to do server-side processing, can yield a HUGE improvement in the appearance of your application. Things like checking if a username is unique before submitting the form, and telling the user right there if they need to pick a new one. Note that this uniqueness check does NOT count as validation, because the form is optional, only the POST is required. cheers, barneyb On Fri, Jun 27, 2008 at 12:20 PM, Ian Rutherford <webmaster@...> wrote: > When you are writing your code, where do you handle error checking? > > Do you handle it with Javascript on the front end? With code before you hand the data to a CFC, in CFCs, in your T-SQL code? Or do you duplicate the error checking at each step along the way? > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308257 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Sonny Savage
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I recently wrote some form validation. I the validation was done in CF but
was done through an AJAX call when JS was available. I feel this is the best of both worlds. The end-user gets nice JS interaction when available and the validation is written only ONE time on the server-side where it can't be circumvented. Edward A Savage Jr - "Sonny" Senior Software Engineer Creditdiscovery, LLC "An appeaser is one who feeds a crocodile, hoping it will eat him last." ~ Sir Winston Churchill On Fri, Jun 27, 2008 at 4:09 PM, Dominic Watson < watson.dominic@...> wrote: > I personally never use js for validation; I always do it server side. I > make > sure the database has its own validation checking (using constraints, etc) > and I also check the submitted data with ColdFusion before sending it to > the > database. > > Dominic > > 2008/6/27 Jerry Johnson <jmiloj@...>: > > > All of the above. > > > > The more user-friendly code and descriptions happen on the same page via > js > > checks. > > The sql code typically throws a generic error. > > > > And the stuff in between is somewhere in the middle. > > > > On Fri, Jun 27, 2008 at 3:20 PM, Ian Rutherford < > > webmaster@...> wrote: > > > > > When you are writing your code, where do you handle error checking? > > > > > > Do you handle it with Javascript on the front end? With code before you > > > hand the data to a CFC, in CFCs, in your T-SQL code? Or do you > duplicate > > the > > > error checking at each step along the way? > > > > > > > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308258 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Sonny Savage
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If the data is valid it is saved and the client is redirected. Without JS
the form is submitted normally and goes through the same validation. Edward A Savage Jr - "Sonny" Senior Software Engineer Creditdiscovery, LLC "An appeaser is one who feeds a crocodile, hoping it will eat him last." ~ Sir Winston Churchill On Fri, Jun 27, 2008 at 4:41 PM, Brad Wood <bradwood@...> wrote: > Only if you call that server-side validation a second time after the > form is submitted to the server. > > ~Brad > > -----Original Message----- > From: Sonny Savage [mailto:sonnysavage@...] > > I recently wrote some form validation. I the validation was done in CF > but > was done through an AJAX call when JS was available. I feel this is the > best of both worlds. The end-user gets nice JS interaction when > available > and the validation is written only ONE time on the server-side where it > can't be circumvented. > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308260 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Ian Rutherford
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So for the most part you would keep your business logic out of the database and take care of that in CFCS / cfm / ajax logic before hand?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308265 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by denstar
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If you jump up a level, and then use code-generation, you can take
care of a lot of various needs from one model. -- One model to rule them all, and in the darkness bind them. On Fri, Jun 27, 2008 at 3:38 PM, Ian Rutherford wrote: > So for the most part you would keep your business logic out of the database and take care of that in CFCS / cfm / ajax logic before hand? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308273 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: Where Do You Put Your Error Checking Code?
by Tom Chiverton-2
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On Friday 27 Jun 2008, Ian Rutherford wrote:
> So for the most part you would keep your business logic out of the database > and take care of that in CFCS / cfm / ajax logic before hand? Yup, with the note that business rules should never be solely in the client, because the client can't be trusted. -- Tom Chiverton **************************************************** This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at Halliwells LLP, 3 Hardman Square, Spinningfields, Manchester, M3 3EB. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by The Solicitors Regulation Authority. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 2500. For more information about Halliwells LLP visit www.halliwells.com. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308667 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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(ot) javascript problem
by Stephens, Larry V
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I'm using a DHTML javascript menu (from DynamicDrive) that works fine in Mozilla (shows no errors in the error console). The sample works fine in IE but my revision (no revision to code other than adding menu elements) won't even show up in IE.
I see an error icon but it tells me absolutely nothing useful. Line 348 Char: 3 Error: Invalid argument Code: 0 As best I can tell - looking at the page source - line 348 is past the end of the source code so I infer that the problem is in one of the referenced javascript sources. I've tried the IE Developer's Toolbar but don't see anything like the Mozilla error console. I do get warnings in the Mozilla error console but they don't track to a specific line of code. Any clues on how to trace javascript errors in IE? A sample page is http://www.cincinnaticc.org/newweb/ Larry V. Stephens Indiana University Office of Risk Management stephenL@... 812-855-9758 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308724 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: (ot) javascript problem
by Gerald Guido
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You can try this.
http://www.debugbar.com/ On Tue, Jul 8, 2008 at 8:42 AM, Stephens, Larry V <stephenl@...> wrote: > I'm using a DHTML javascript menu (from DynamicDrive) that works fine in > Mozilla (shows no errors in the error console). The sample works fine in IE > but my revision (no revision to code other than adding menu elements) won't > even show up in IE. > > I see an error icon but it tells me absolutely nothing useful. > Line 348 > Char: 3 > Error: Invalid argument > Code: 0 > > As best I can tell - looking at the page source - line 348 is past the end > of the source code so I infer that the problem is in one of the referenced > javascript sources. > > I've tried the IE Developer's Toolbar but don't see anything like the > Mozilla error console. > > I do get warnings in the Mozilla error console but they don't track to a > specific line of code. > > Any clues on how to trace javascript errors in IE? > > A sample page is http://www.cincinnaticc.org/newweb/ > > > Larry V. Stephens > Indiana University > Office of Risk Management > stephenL@... > 812-855-9758 > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308725 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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RE: (ot) javascript problem
by Adrian Lynch
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If things aren't working after you made a change, show us a before and after
sample of the code. Adrian -----Original Message----- From: Stephens, Larry V [mailto:stephenl@...] Sent: 08 July 2008 13:43 To: CF-Talk Subject: (ot) javascript problem I'm using a DHTML javascript menu (from DynamicDrive) that works fine in Mozilla (shows no errors in the error console). The sample works fine in IE but my revision (no revision to code other than adding menu elements) won't even show up in IE. I see an error icon but it tells me absolutely nothing useful. Line 348 Char: 3 Error: Invalid argument Code: 0 As best I can tell - looking at the page source - line 348 is past the end of the source code so I infer that the problem is in one of the referenced javascript sources. I've tried the IE Developer's Toolbar but don't see anything like the Mozilla error console. I do get warnings in the Mozilla error console but they don't track to a specific line of code. Any clues on how to trace javascript errors in IE? A sample page is http://www.cincinnaticc.org/newweb/ Larry V. Stephens Indiana University Office of Risk Management stephenL@... 812-855-9758 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308726 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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Re: (ot) javascript problem
by Claude Schneegans
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>>Any clues on how to trace javascript errors in IE?
Error messages in IE are simply retarded. The error could be in any file, and it does not even give the file name. Furthermore, the line number is always one unit higher. Then your error must be in one of the included files, at line 347. -- _______________________________________ REUSE CODE! Use custom tags; See http://www.contentbox.com/claude/customtags/tagstore.cfm (Please send any spam to this address: piegeacon@...) Thanks. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;203748912;27390454;j Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:308727 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=17837.14401.4 |
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RE: (ot) javascript problem
by Stephens, Larry V |
