pdfMachine merge - insert personalised chart into PDF
Note: the liquid "chart" tag only Works in Word document templates.
A chart template can be configured under the profile "charts" tab. Each chart template has an ID, which is refered to by the custom liquid "chart" tag. The chart tag takes 2 parameters,
the chart id and an optional collection, which defaults to "_rows" if not given.
e.g. in your Word template document:
{% chart 1 %}
or something more complex:
{% assign groups = _rows | group_by: "invoice_id"}
{% for group of groups}
{% chart 1, group %}
{% endfor %}