gmane.comp.lang.active4d.devel

a4d.json help!

Todd Freese — 2008-09-25T18:57:47

I am fairly new to the whole world of returning data as JSON responses. I have a site that needs to get some data from 4D and return it as JSON data. I have the return data all formatted using the very cool a4d.json library, however, it seems that this data needs to be "wrapped" in some sort of callback syntax. Do I need to parse out something from the original request header to wrap my response with? My JSON response: {"folderNames":["Client Approval","Dailies","Design Tests","Released Spots"]} Here is what it should be: CPJSONPConnectionCallbacks.callback716({"folderNames":["Client Approval","Dailies","Design Tests","Released Spots"]}) Where do I get the "CPJSONPConnectionCallbacks.callback716" part? Thanks! Todd Freese The Filmworkers Club

File Download Problem

Tim Gillespie — 2008-09-22T18:16:05

Friends: I have Active4D 4.0.2 running on a Mac server with OS v10.4.11. In my environment, when I request a 4D document to be downloaded to the workstation using IE or Firefox, Mac or PC, the process works perfectly. Currently we have four formats: .doc, .rtf, .html or .pdf and each type opens correctly with the appropriate application. I have tested this exact same code in two other independent environments with no issues at all. When I take the exact same code and place this on my customer's Mac server with OS v10.4.11 at their location, the files have the correct external file name extension and the download process completes. However, the applications, like Word or Acrobat are unable to open the document saying the document is not the correct type or the file has been damaged. Additional, if my client emails me any of the four types, my Exchange server quarantines the documents saying the external filename does not agree with the internal filename. Has anyone seen this type of behavior before or hav

Cookies

Jaime Herreros — 2008-09-22T17:45:03

Does someone know a method of detecting if cookies are enabled on the browser using A4D? TIA, Jaime

SproutCore & Cappuccino

Todd Freese — 2008-09-17T16:36:12

Has anyone used the SproutCore or Cappuccino frameworks with A4D? I am starting a major update to a web application and these new frameworks look very promising. I would be interested in your thoughts, praises or gripes. Thanks, Todd Freese The Filmworkers Club

CSRF security weakness?

Tony P — 2008-09-17T15:24:51

We had a security check on one of our A4D sites recently and I was surprised to see a vulnerability listed for Cross Site Request Forgeries. This is a targeted attack where the user accesses a malicious website whilst still within a session on your website. For a detailed explanation see http://en.wikipedia.org/wiki/Cross-site_request_forgery In this case the A4D session cookie actually helps the attacker, and it should be noted that apparently 99% of web sites have this vulnerability. I would not regard it as a significant weakness, but better safe than sorry. The work-around is to include a random session- linked token (not the same as the cookie) on any "sensitive" forms you may have, but I'm wondering if there is any better way to tackle the problem? Or if it has already been tackled or is in future plans? Tony Pollard Another Dimension Ltd

Design Question

Bill Leddy — 2008-09-16T19:13:33

Hi All, i'm hoping for suggestions / voices of experience on a problem I have managing multiple logins from a single user. The Situation: 1. Users log in to manage their data... works great. 2. User, for reasons both legitimate and imaginary, creates 2 separate accounts and attempts to login to both accounts simultaneously using 2 browser windows. (their goal is usually to copy and past info between the accounts) I keep the UserID in Session so that it is never sent over the network. I understand that the session cookie is shared by all instances of the browser, so when the user logs in the second time, it actually just replaces the original UserID. Now when they try to submit a form using the first browser window the update fails (quietly in this case) because the user is no longer logged into that account. To answer the first questions: Yes, they're told not to. Yes, they continue to do so. Yes, they are customers so I can't tell them to just go pound sand. Any ideas on h

Active4D v5 packaging

Aparajita Fishman — 2008-09-06T22:00:23

Hi, Well, the time has finally come to start working on Active4D v5. And to get the most out of 4D v11 (and the latest web technologies in general), I need to support Unicode fully. To do this I will be using a library called ICU, which is used by 4D v11 itself. That is the good news. The bad news is that ICU requires very large support files (>7M) that contain character set and locale data. I am trying to come up with a scheme that avoids including those support files in the plugin bundle itself, to avoid the overhead of copying them to every client. There are a number of possible solutions: 1. Reduce the number of character sets and locales supported, thus reducing the data file size. The disadvantage of this approach is that I need to provide additional data files if the default data files do not cover someone's locale. 2. Stop supporting PPC. This requires a duplicate data file with different byte ordering. Dropping PPC support would cut the total data file size in half. 3.

[ANN] ObjectTools v2.5b2 - Windows version nowavailable!

Aparajita Fishman — 2008-09-06T17:29:17

Dear friends, At long last your wait is over! ObjectTools -- the indispensable, all- purpose extension to the 4D language -- is now available as a plugin bundle for Mac OS X (Intel and PPC) and Windows, for 4D 2004 and v11! To download: http://www.aparajitaworld.com/site/products/ObjectTools/download.php Please note that this new version -- ObjectTools v2.5 -- is no longer free. Why? The only reason v2.0 was free was because a large company very kindly paid me to do the development, so I could continue to offer it for free. But that support was not there for v2.5, so from now on it is you, the users of ObjectTools, who must support its continued development. ObjectTools v2.5 is priced at only $70 per deployment. OEM licenses are also available. Licenses may be purchased at my online store: http://www.aparajitaworld.com/store/index.php?main_page=index&cPath=1_8 Thank you for your patience! Regards, Aparajita www.aparajitaworld.com "If you dare to fail, you are bound t

Error 4448 on Load Record

Douglas von Roeder — 2008-09-04T02:13:28

Code snippet from an A4D page: query([Freight];[Freight]ID = $freightID) LOAD RECORD([Freight]) When the code runs, A4D throws error 4448. This is happening in two places. Can't find 4448 in the docs - any idea what 4448 means?

Announcement in Premium Support

Aparajita Fishman — 2008-09-02T18:40:16

Hello, For the Premium Support members, there is a new announcement: https://www.aparajitaworld.com/premium/viewtopic.php?f=5&t=8 Regards, Aparajita www.aparajitaworld.com "If you dare to fail, you are bound to succeed." - Sri Chinmoy | www.srichinmoy.org

Active4D causes 4D WebServer to fail?

Peter Schumacher — 2008-08-31T17:07:01

Hi, on my own websever I'm observing a strange problem. Every second request I get a "Server-Error" message from 4D. The other 50% are working fine. Even going back on the status before the last changes (recovered from a backup) doesn't change it. Using a different 4D version doesn't help either. Serving the same pages with 4D only - and it works fine. The "good thing" is, it happens on my server only. Same errors if I change the server (MacBookPro, Windows box). Even more strange: * the error message doesn't appear inside my own network (public IP addresses!!) * no problems from a G5 running Safari 1.2 http://www.4d-consulting.com (just in case you want to test it) A4D 4.0.3b39 4D 2004.7 build 3 hotfix 2 MacOSX 10.5.4 Hopefully it doesn't happen on a customer site, it would kill A4D there. I have no idea where to search, already searched here: * receated webpage * removed all JavaScript (Google only) * switched extensions from .shtml to .html to .a4d If I put the home page, default.shtml, int

_request - 4.5 crash

Steve Alex — 2008-08-31T11:10:52

In another system that I have not converted to 4.5, I stored the full requested url to the _request collect in "on execute start". _request{"inurl"} := full requested url I tried to move that line to a 4.5 system and it crashes 4D. If fact trying to store anything in _request crashes 4D. I moved the line to a script and it still crashed 4D. I tried _request{"test") := "hi steve" a4d.debug.dump collection(_request) It crashes most of the time, but once I got and Active4D error reporting an internal error in the dump routine. It seems a little random? I actually got it to work in one script and crash in another. In an unrelated problem, I'm also having problems getting dump locals to work most of the time, with an end if error. Just added a dump locals to the demo login form and got: /Macintosh HD/Users/salex/Desktop/4d2004/Active4D_Demo_2004/web/demo/ login/views/dsp_loginForm.a4d[main]60 /Macintosh HD/Users/salex/Desktop/4d2004/Active4D_Demo_2004/Active4D/ a4d.debug.a4la4d.debug.

[OFF]Question about how BBEdit Colorizes A4D Files

Douglas von Roeder — 2008-08-28T19:08:42

This is a "Doh" question… I'm using BBEdit to modify A4D files. When I open on one of the files ("thankyou.a4d") the contents are colorized. This file contains HTML and the HTML and non-HTML text is colorized. When I open the file "post_RefRom.a4P", the contents are not colorized. There is no HTML in the file but when I add HTML, the contents do not colorize. Can someone steer me in the right direction so that I can enable colorizing all A4D files? Thanks.

JSON debugging tip

Brad Perkins — 2008-08-28T17:25:12

Firebug is great for seeing what is being sent and returned when doing 'AJAX' style development (XHR). However, if you are working on a page that expects a JSON response and your back end code returns output in addition to the JSON , your client side Javascript probably won't work as expected because the extra data invalidates the JSON. I'm working on a project that uses jQuery, and in my usage I recently experiences this. The problem was that in this case the additional output was my doing. I'd put some "write" calls in the code to debug something. Of course I could have used write to console, but my A4D code is running on 4D client in a machine in a server room. I wanted to see the output in the response. I discovered that you can do a couple of things to fix this. (1) Return your debugging output in the JSON. The downside of this is that the debug out is harder to read and may loose any intended formatting. (2) Output your debugging output inside a Javascript /* */ comment. This keeps the JSON valid, p

My 'for each' is broken. Or at least myunderstanding is.

Michael Check — 2008-08-20T19:25:29

Using A4D 4.5r1 with 4D 2004.5 I've been staring at this way too long. Can anyone see an obvious reason why the for each below does not work the way the for loop does? CODE writebr(concat(" "; 'Records found:'; string(size of array(account_AT)))) if(size of array(account_AT)>0) c_longint($idx) c_text($value) for each (account_AT; $value; $idx) writebr('Account: %1%' % $value) writebr('Password: %1%' % password_AT{$idx}) end for each writebr for ($idx; 1; size of array(account_AT)) writebr('Account: %1%' % account_AT{$idx}) writebr('Password: %1%' % password_AT{$idx}) end for end if RESULTS Records found: 3 Account: 11111 Password: password Account: 11111 Password: password Account: 22222 Password: password Account: 33333 Password: password Thanks, Michael Check

A4D 4.5 Demo Firefox img

Steve Alex — 2008-08-18T20:01:44

I can't seem to get images to load from the web-static directory in Firefox (2.0.0.16). Works fine in Safari, IE. CSS loads fine, just images. I've been converting a site to 4.5 and used much of the structure of the demo. All was working fine in Safari. Went to IE and of course I had to tweak the CSS, but when I went to Firefox, images flat won't load. This is in either is CSS or with an img tag. Can anyone else confirm this? I can do xxx.xxx.xxx:8080/images/ myimage.jpg and it works fine. Think I even got it to cache it for one screen load. Steve Alex

Starting ODBC project with A4D

Michael Check — 2008-08-18T19:22:59

We have a database that we've created to be exclusively accessed via A4D; there is no other user interface. Part of the data that we need to collect is read-only in a SQL Svr on the LAN. So we need to, for instance, authenticate users via a MS SQL db table, but they will be mostly using the data in 4D. So we have ODBC access to the MS SQL Svr, which we can query from 4D, but my question is the best way to access the queries and data via A4D. Should we write a bunch of 4D wrapper methods that we can call from our qry_selectMany.a4d files (we're using fusebox)? One real bummer about that is using rowsets, which we want to do. I'm not sure I can see how to get the data into a rowset unless I first pull it via ODBC, populate arrays, then push into rowsets. That's a lot of work, ugh. And so then, should the wrappers be written in A4D, mimicing the 4D ODBC commands, and calling the 'Execute 4D Command' from with the A4D method? Or write the wrappers in 4D, calling them as methoids from A4D. I know I coul

Custom error page and processing

Peter Schumacher — 2008-08-17T16:25:36

Hi, I've setup a custom error page (for syntax errors and so) and in case of an error it displays. Fine. But as soon as I want to do something like <% write("Hello World")%> I get the good old error display (native) of A4D showing my test error. A4D 4.0.3b39 4D 2004.7 build 3 hotfix 2 MacOSX 10.5.4 The test error is generated so: <% write($Test) %> $Test is not defined. My custom error page shows up. OK, but any A4D code I put in there displays "write($Test)" as error and not my custom page. Frankly, I have no idea where to lock for something. :) Mit freundlichen Grüßen [4D-Consulting.com]eK, Wiesbaden Peter Schumacher -------------------------------------------------------- Web: http://www.4D-Consulting.com/ FreeCall: 0800-434 636 7 Tel.: 0611-9406.850 - Fax: 0611-9406.744 4D-Consulting.com eK - Scharnhorststr. 36 - 65195 Wiesbaden HR Wiesbaden: HRA 4867

v4.5 key files

Aparajita Fishman — 2008-08-15T22:55:00

Greetings, The bug with key files has been resolved. The key files were fine, it was the routine that retrieved license info that had a bug. So I will have to release v4.5r2 to ensure 'get license info' works correctly. Regards, Aparajita www.aparajitaworld.com "If you dare to fail, you are bound to succeed." - Sri Chinmoy | www.srichinmoy.org

Sorry for the delay...

Aparajita Fishman — 2008-08-14T15:27:36

Hi, If you ordered new deployments or Premium Support in the past few days, thank you! I just discovered there is a critical bug in my key file generator, any v4.5 key file you have won't give you unlimited time. I'm working on a fix and will send you a new one as soon as it's ready. If you have not yet received a key file, please be patient while I fix this problem. Regards, Aparajita www.aparajitaworld.com "If you dare to fail, you are bound to succeed." - Sri Chinmoy | www.srichinmoy.org

A4D & SproutCore??

Todd Freese — 2008-08-13T21:31:40

Has anyone played with or are using the SproutCore AJAX frameworks? Apple gave it a huge endorsement at WWDC and said it is heavy used in the new Mobile Me. (Problems aside!) Todd Freese The Filmworkers Club