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Johannes Correa
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[Easy Gantt] Error using Gantt as Web Block
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Easy Gantt
Forge component by Guilherme Pereira
Good morning. 

I am trying to use Easy Gantt do draw a Gantt chart of a given set of Outsystems Objects, each of them with Start and End Date. I am following the ideas of the sample application but when includding the webblock and after processing my data and transforming it to the structure required for Easy Gantt I am having the following error into the Javascript Console of Chrome:



The bigges problem is that the page I am using to show the gantt gets blocked after the error an does not work properly. Any idea how to fix this?
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23 Jun 2015
Additional Information: same error is being produced by sample application. 
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23 Jun 2015
Ji Joahnnes,

I've the sample application running as the demo on my PE and I can't see the error you're describing. (https://lguilhas.outsystemscloud.com/EasyGanttSample/)

On what operation are you getting the error?

Thanks,
Guilherme
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23 Jun 2015
Hi Guilherme. Thanks for your answer. I downloaded the module, installed in an onpremise development server and tried the sample app.

I was doing a debug on the app and all the process is done right, it fails when control returns to javascript.

Guilherme Pereira wrote:
Ji Joahnnes,

I've the sample application running as the demo on my PE and I can't see the error you're describing. (https://lguilhas.outsystemscloud.com/EasyGanttSample/)

On what operation are you getting the error?

Thanks,
Guilherme
 
 
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24 Jun 2015
Hello Guilherme. I am doing some debugging to the javascript and this is were EasyGantt is failing:



It's failing in line 175 of Gantt.js. Doing a watch to the dates[y][m][d], you can notice that debugger says that is a "Invalid date". The weirdest part or everything is that getDate() function exists for the object. 

Do you have any idea? Should i be formatting dates in some specific way?
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24 Jun 2015
I just deployed EasyGantt on my personal environment and it works with any issue. Could be some problem with my local installation? Does it have any particular requirement?
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24 Jun 2015
Hi Guilherme. Againt with this issue. Please take a look in the next two following pics:

This first pic is when this for cicle at line 172 starts. 


It works fine for some iterations... until this: look how at what it looks the end of the cycle 'd' variable takes as value "index"... which of course is not a valid value to access an array and thus the "getDate" function is not found. The dates i am using are on the final days of the month... could it be a bug with this kind of dates? Should i add an if to avoid this specific value?


Kind regards for your help.
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24 Jun 2015
Hi Johannes,

I saw you PM but because I'm using an external plugin I prefer not to add customizations to facilitate future upgrades. I've used this component on several environments (personal, onpremises) but I haven't saw that behavior.

Can you share a small oml that fails in you scenario so I can try to analyze it and see what could be wrong?

Thanks,
Guilherme
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25 Jun 2015
Hello Guilherme. Thanks for your answer. 

The issue i was having with my project can be reproduced with the sample application. That's the weirdest thing of all: i installed EasyGantt in my personal environment and it worked fine. I used it in our local server, it failed. Same version. Without any customization. And it was failing no matter which browser i used: chrome, firefox, ie.

I think it must be an environment related issue and given i fixed it, i just want to continue ;)
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26 Jun 2015
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