fin-hypergrid/core

setValue method of Hypergrid failing with TypeError: Cannot read property 'subgrid' of undefined

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#581 opened on Apr 4, 2017

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Description

When I use these two lines in my code then I get an error: TypeError: Cannot read property 'subgrid' of undefined

// Error!!!! grid.setValue(colPos['bob'], gridRow+1, rowData[i].bob); grid.setValue(colPos['pi'], gridRow+1, rowData[i].key);

But when I use these two lines in my code then everything works fine

// No error!!!!! grid.behavior.dataModel.setValue(colPos['bob'], gridRow, rowData[i].bob); grid.behavior.dataModel.setValue(colPos['pi'], gridRow, rowData[i].key);

Is the grid.setValue method the one to use or is the grid.behavior.dataModel.setValue method the one to use?

The error only seems to happen when the height of the div containing the Hypergrid is smaller than the height that the Hypergrid eventually grows to as rows are dynamically added.

Contributor guide

Tech stack
javascript
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Examine the implementation of grid.setValue in the source code (likely in src/lib/Grid.js or similar). Understand how it calls dataModel.setValue and why it would fail when the container height is smaller than the grid's eventual height. The error suggests that the subgrid property is undefined, indicating that the cell or row is out of bounds. A fix might involve adjusting the row index handling, or ensuring that setValue delegates properly. Compare with the direct call to grid.behavior.dataModel.setValue which works, to identify the missing step.