UDataTableFunctionLibrary::FillDataTableFromJSONFile

function Engine Blueprint Since unknown

#include "Kismet/DataTableFunctionLibrary.h"

Access: public Specifiers: staticBlueprintCallable

Description

Empties the given Data Table and repopulates it by importing the JSON file at the given path. Editor-only — used for scripted asset pipelines and automated data import.

Caveats & Gotchas

• Only compiles with WITH_EDITOR — calling this from packaged game code is not possible; it exists for editor scripting and commandlets.
• The table is emptied before import, so a malformed JSON file leaves the table blank rather than reverting to its previous contents.
• If ImportRowStruct is left null and the table has no row struct assigned, the import will prompt interactively when run inside the editor UI; pass ImportRowStruct explicitly to keep automated pipelines (e.g. commandlets) non-interactive.

Signature

static bool FillDataTableFromJSONFile(UDataTable* DataTable, const FString& JSONFilePath, UScriptStruct* ImportRowStruct = nullptr);

Parameters

Name	Type	Description	Default
DataTable	UDataTable*	The table to empty and repopulate.	—
JSONFilePath	const FString&	File-system path of the JSON file to read.	—
ImportRowStruct	UScriptStruct*	Optional row struct to force for the import; also makes the import fully automated with no dialogs.	nullptr

Return Type

bool

Example

Reimport a table from JSON in an editor script C++

bool bOk = UDataTableFunctionLibrary::FillDataTableFromJSONFile(MyDataTable, TEXT("C:/Data/Items.json"), FMyItemRow::StaticStruct());
if (!bOk)
{
    UE_LOG(LogTemp, Error, TEXT("Failed to import Items.json into MyDataTable"));
}

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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