Articles on: Expression language

List (array) functions

With List (array) functions the Text component must have the Format set to Number.

Count

It is possible to count number of items in list.
{% count({line_items}) > 3 ? 'More than three' : 'Less than three' %}


Max

Returns maximum value of list of elements or separate field values.
{% max({line_items::quantity}) %}

or
{% max({dataField1}, {dataField2}, ..., {dataFieldN}) %}


Min

Returns minimum value of list of elements or separate field values.
{% min({line_items::quantity}) %}

or
{% min({dataField1}, {dataField2}, ..., {dataFieldN}) %}


Sum

It is possible to calculate sum of table column using following code.
{% sum({line_items::amount}) %}


Sumproduct

The sumproduct function multiplies the corresponding items in the arrays and returns the sum of the results.
{% sumproduct({line_items::amount},{line_items::price}, {line_items::anotherColumn}) %}


Average

It is possible to calculate average of table column using following code.
{% avg({line_items::amount}) %}

Use "Number" formatting when creating calculations or using sum, average, sumproduct functions.

Join

The join(delimiter, array) function concatenates field values with specified separator. Last argument is always used as the separator.
{% join(";", {field1}, {field2}, {field3}, ..., {fieldN}) %}
{% join(";", [{field1}, {field2}, {field3}, ..., {fieldN}]) %}


Iterate list of elements (array map)

Iterates over list of elements and executes expression for each element. Returns new list.
{% iterate({line_items}, 'quantity*price') %}


{% map({line_items}, 'quantity*price') %}


Filter list of elements

Filters a list of elements by executing the given expression for each element. Returns new list.
{% filter({line_items}, 'price > 10.1') %}


Collect unique values from list

Collects unique values from and counts them. Returns new list with following structure:
[{"value": "Value", "count": 3, "raw_value": "Value"}, {"value": "Value 2", "count": 1, "raw_value": "Value 2"}]
{% collect_unique_values({array}, {array_of_values_to_exclude}, {expression_to_execute_for_each_item}) %}


Flatten list

Flattens list.
{% flatten(iterate({orders}, "{line_items}")) %}


Sort list

The function sort([array], [expression], [direction])) allows you to sort list of elements by the key value. The direction can be either ASC or DESC. The function returns new array with sorted items.

{% sort({line_items}, "quantity", "DESC") %}
{% sort({line_items}, "quantity*price", "ASC") %} 
{% sort({line_items}, "quantity > 10 ? 1 : 0", "ASC") %}

Updated on: 18/12/2022

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