Unreal_ Datatable implements ID self increment and sets rowname

Implement... In the editor id Self increasing

For example, the picture above , Click on Add when , Realization Id Automatic addition 1, How to achieve it ？

The method is as follows ：

1. When defining the structure as shown in the figure , stay Id Property column , Assign a value when initializing the structure attribute

2. Define a static method , Dynamic acquisition in static method Datatable Data in table

   Get Id There are many methods of attribute value , The following is only a reference

   int32 UDataTableHelperUtils::GetDataTableLastIdNum()
      {
    
      	int CardId = 0;
      	UDataTable* DataTable = LoadObject<UDataTable>(nullptr,TEXT("DataTable'/Game/DataTables/DT_Cards.DT_Cards'"));
      	if(!DataTable) return CardId;
      
      	TArray<TArray<FString>> TableData = DataTable->GetTableData();
      #if WITH_EDITOR
      	for(int i=0; i< TableData.Num();i++)
      	{
    
      		FDataTableEditorUtils::RenameRow(DataTable,*TableData[i][0],*TableData[i][1]);
      	}
      #endif
      	
      	DataTable->Modify();
      
      	// UEditorAssetLibrary::SaveAsset(TEXT("DataTable'/Game/DataTables/DT_Cards.DT_Cards'"),false);
      
      	const FString RowId = TableData[TableData.Num()-1][1];
      	CardId = FCString::Atoi(*RowId);
      
      	return CardId;
      
      	
      }

​ among DataTable->GetTableData（） Method is a two-dimensional array , Row and column structure . The default column subscript is 1 Represent id The value of the property

​ among const FString RowId = TableData[TableData.Num()-1][1]; Getting is the last line Id The attribute value

Dynamic modification RowName

If you use the code level , Dynamically add a record . have access to FDataTableEditorUtils, This category mainly belongs to UnrealEd modular , It cannot be used at runtime .

FDataTableEditorUtils::AddRow()

At runtime or Runtime In mode , It can also be done through UDataTable Methods AddRow() Implementation add , But no reset is provided at runtime RowName Methods .

In the above code , This method is modified RowName It's not a very efficient way , This can be adjusted according to the actual situation , The author tests under the editor , Regardless of performance

for(int i=0; i< TableData.Num();i++)
{
		FDataTableEditorUtils::RenameRow(DataTable,*TableData[i][0],*TableData[i][1]);
}

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