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37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
---
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title: Internal Barcodes
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---
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## Internal Barcodes
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InvenTree defines an internal format for generating barcodes for various items. This format uses a simple JSON-style string to uniquely identify an item in the database.
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Some simple examples of this format are shown below:
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| Model Type | Example Barcode |
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| --- | --- |
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| Part | `{% raw %}{"part": 10}{% endraw %}` |
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| Stock Item | `{% raw %}{"stockitem": 123}{% endraw %}` |
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| Supplier Part | `{% raw %}{"supplierpart": 99}{% endraw %}` |
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The numerical ID value used is the *Primary Key* (PK) of the particular object in the database.
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## Report Integration
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This barcode format can be used to generate 1D or 2D barcodes (e.g. for [labels and reports](../report/barcodes.md))
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To access the raw barcode information string within a template, use the `.barcode` attribute, and pass it into a barcode generation method.
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### Example: QR Code
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For example, to render a QR-Code image for a part instance:
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```html
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{% raw %}
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<img src='{% qrcode part.barcode %}'>
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{% endraw %}
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```
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!!! info "Barcode Formatting"
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Refer to the [report documentation](../report/barcodes.md) for further information on formatting barcode data
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