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109 lines
1.8 KiB
Plaintext
109 lines
1.8 KiB
Plaintext
---
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id: update
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title: "Modify data: update()"
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slug: update
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custom_edit_url: https://github.com/supabase/supabase/edit/master/web/spec/dart.yml
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---
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import Tabs from '@theme/Tabs';
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import TabsPanel from '@theme/TabsPanel';
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Performs an UPDATE on the table.
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<Tabs
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defaultActiveId="dart"
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groupId="reference/dart"
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values={[{ label: 'Dart', value: 'dart' }]}>
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<TabsPanel id="dart" label="dart">
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```dart
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final res = await supabase
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.from('cities')
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.update({ 'name': 'Middle Earth' })
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.match({ 'name': 'Auckland' })
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.execute();
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```
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</TabsPanel>
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</Tabs>
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## Notes
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TODO update the link to dart
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- `update()` should always be combined with [Filters](/docs/reference/javascript/using-filters) to target the item(s) you wish to update.
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## Examples
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### Updating your data
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<Tabs
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defaultActiveId="dart"
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groupId="reference/dart"
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values={[{ label: 'Dart', value: 'dart' }]}>
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<TabsPanel id="dart" label="dart">
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```dart
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final res = await supabase
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.from('cities')
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.update({ 'name': 'Middle Earth' })
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.match({ 'name': 'Auckland' })
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.execute();
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```
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</TabsPanel>
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</Tabs>
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### Updating JSON data
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Postgres offers a
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[number of operators](https://www.postgresql.org/docs/current/functions-json.html)
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for working with JSON data. Right now it is only possible to update an entire JSON document,
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but we are [working on ideas](https://github.com/PostgREST/postgrest/issues/465) for updating individual keys.
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<Tabs
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defaultActiveId="dart"
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groupId="reference/dart"
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values={[{ label: 'Dart', value: 'dart' }]}>
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<TabsPanel id="dart" label="dart">
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```dart
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final res = await supabase
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.from('users')
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.update({
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'address': {
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'street': 'Melrose Place',
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'postcode': 90210
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}
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})
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.eq('address->postcode', 90210)
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.execute();
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```
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</TabsPanel>
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</Tabs> |