Template methods don't replace previously set values

Alex Kulick

created 7 years ago

Hello,

After updating to the latest version of DevExtreme I have an issue with setting of cell templates using CellTemplate() method. In my solution I have the common place where I set default cell template for the columns, and then it's possible to replace it by some custom template (it means that I can call CellTemplate() method more then one time). It worked perfect before but now I always see the first template I was set into the column - it seems now CellTemplate doesn't replace templates.
I have attached screenshot where you can see that the "column0" has 2 templates and for the "column1" I'm trying to set the second one template too.

Is it a bug or new behavior of the CellTemplate method (in this case how can I replace previous cell template in the column)?
Thanks!

wrongCellT...mplate.png

Answers approved by DevExpress Support

DevExpress Support Team

created 7 years ago (modified 7 years ago)

We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.

Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.

Alessandro (DevExpress Support)

created 7 years ago

Hi,

The internal Templates property is a dictionary. So, its content is not ordered and we cannot grantee that the latest template will be used.

2) Normally, the CellTemplate method is used to assign only a single template. If you wish to implement conditional template assignment, it is possible to assign a custom function to the cellTemplate and calculate the require template in the context of this function. For example:

JavaScript
function getTemplate(e) {  
    var someCondition = true;  

    if (someCondition)  
        return "<div>123</div>"  
    else  
        return "<div>456</div>"  
}

C#
columns.AddFor(m => m.ShipCity).CellTemplate(new JS("getTemplate()"));

Please let me know if your scenario is different.

Thanks,
Alessandro

Comments (2)

Alex Kulick 7 years ago

Hi Alessandro,

thank you for the answer. Unfortunately, it's not the solution for me, so I need to refactor my application to make it possible to use this method only once… But why this behavior has been changed and I don't understand why it stores all set of templates if it uses the only one item from this dictionary? It looks like as a bug. Just confirm that it's new behavior and I don't need to wait new changes, so I'll start refactor of my application.

Thanks!

Alessandro (DevExpress Support) 7 years ago

Hi,

We are working on your problem and need some additional time to research it in greater detail. We will let you know of our progress once we have any results. I hope you will excuse any delay that may arise.

Template methods don't replace previously set values

Answers approved by DevExpress Support

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