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When importing a CSV file, empty cells were always imported as empty strings with no way to import NULL values instead. This adds a "Treat empty cells as NULL" checkbox to the import configuration panel. When enabled, PapaParse's transform option converts empty strings to null before the data is parsed and previewed, so the imported rows correctly contain NULL rather than empty strings. Fixes #43258. ## What kind of change does this PR introduce? Bug fix ## What is the current behavior? Empty cells in a CSV file are always imported as empty strings with no way to import NULL values instead. Fixes #43258. ## What is the new behavior? "Treat empty cells as NULL" checkbox is added to the import configuration panel. When enabled, empty cells are imported as NULL instead of empty strings. Toggling the checkbox instantly re-parses the preview. ## Additional context The fix uses PapaParse's transform option to convert empty strings to null before parsing. Applies to both file uploads and pasted text. Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com> Co-authored-by: Charis Lam <26616127+charislam@users.noreply.github.com>
Writing components
Where to create your components
- For components that declare the general structure and layout of a page:
/components/layouts/xxx
- For components that are tightly coupled to a specific interface:
/components/interfaces/xxx
- For components that are meant to be reusable across multiple pages:
/components/ui/xxx
- Note: We're gradually moving files out of the
to-be-cleanedfolder into the respective folders as we refactor
Component structure
- If a component has constants and utility methods that are tightly coupled to itself, keep them close to the component and enclose them in a folder with an
index.tsxas an entry point - Otherwise it can just be a file on its own
- For example:
-
components/ui - SampleComponentA - SampleComponentA.tsx - SampleComponentA.constants.ts - SampleComponentA.utils.ts - SampleComponentA.types.ts - index.ts - SampleComponentB.tsx
-
Template for building components
// Declare the prop types of your component
interface ComponentAProps {
sampleProp: string
}
// Name your component accordingly
const ComponentA = ({ sampleProp }: ComponentAProps) => {
return <div>ComponentA: {sampleProp}</div>
}
export default ComponentA