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Resolved DwFilter() and DwCompute() attribute don't works at all

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  1. Adnan Ahmed
    Adnan Ahmed
  2. SnapObjects
  3. Monday, 8 July 2024 09:28 AM UTC

Hi,

 
I have written this condition for Model [DwFilter("UPPER(lastname) = 'ASHLEY'")] but it doesn't return the specified criteria data.
 
Secondly, I am facing an issue with the DwCompute() attribute which always returns a NULL value. Please help me out to get the computed value from that property instead of NULL value. 
 
For now I am doing this task manually for every property in the whole project by writing C# code as shown in the property below the red line.
 
image.png
I need the value from [DwCompute(" person_lastname +\" \" + person_firstname ")] attribute by returning proper value.
 
Highly waiting for your reply.
 
DwCompute() Annotation is not fetching the data
Include subobjects
Responses (2)
Larry Peters
Larry Peters Accepted Answer Pending Moderation
  1. Wednesday, 10 July 2024 07:47 AM UTC
  2. SnapObjects
  3. # 1

Hi Adrian,  My two bit suggestion re dw_filter. Try:  DwFilter("TRIM(UPPER(lastname)) = 'ASHLEY'") 

 

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Logan Liu @Appeon
Logan Liu @Appeon Accepted Answer Pending Moderation
  1. Wednesday, 10 July 2024 02:49 AM UTC
  2. SnapObjects
  3. # 2

Hi Adnan,

For the DwFilter attribute, the filter expression should work when calling DataStore<T>.Retrieve method. Alternatively, you can call IDataStore.Filter<TModel>(Func<TModel, bool> predicate) Method (appeon.com).

For the DwCompute question, there is this limitation due to performance consideration. Please refer to a similar topic here: ASP .NET Core Web API project: problem with datawindow computed fields (appeon.com)

Regards, Logan

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