FunctionCopy link to clipboard
a!defaultValue( value, default )
Returns a default value when the specified value is null or empty. When there are multiple default parameters, each parameter is evaluated in order and the first non-null and non-empty default will be returned. Null, "", and {} are all considered null or empty values.
ParametersCopy link to clipboard
| Keyword | Type | Description |
|---|---|---|
|
|
Any Type |
Value to be returned if not null or empty. |
|
|
Any Type |
Default value to return when value is null or empty. |
ReturnsCopy link to clipboard
Any Type
ExamplesCopy link to clipboard
BasicCopy link to clipboard
1
a!defaultValue(null, 1)
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Returns 1.
1
a!defaultValue(1, "default")
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Returns 1.
Using null or empty valuesCopy link to clipboard
1
a!defaultValue("", "default")
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Returns "default".
1
a!defaultValue(null, "")
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Returns "".
1
a!defaultValue({}, "default")
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Returns "default". An empty list is considered null or empty.
Using multiple default parametersCopy link to clipboard
This function accepts multiple default parameters. Each parameter will be evaluated in order until the first non-null and non-empty default is returned.
1
a!defaultValue(null, "", {})
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Returns {}.
1
a!defaultValue(null, "", 1, "", {})
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Returns 1.
Using listsCopy link to clipboard
1
a!defaultValue({1, 9}, {2, 3, 4, 5})
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Returns {1, 9}. A list of values is treated as a single value of type list.
1
a!defaultValue({null, null}, {3})
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Returns {null, null}. A list of nulls is not considered null or empty.
1
a!defaultValue({"", "", ""}, {3})
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Returns {"", "", ""}. A list of empty text is not considered null or empty.
1
a!defaultValue({{1,2,3}, {4,5}}, "default")
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Returns {1, 2, 3, 4, 5}. Lists of lists are flattened.
1
a!defaultValue(null, {2, {3, 4}, 5})
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Returns {2, 3, 4, 5}. Lists of lists are flattened.
Feature compatibilityCopy link to clipboard
The table below lists this function's compatibility with various features in Appian.
| Feature | Compatibility | Note |
|---|---|---|
| Portals | Compatible | |
| Offline Mobile | Compatible | |
| Sync-Time Custom Record Fields | Compatible | Can be used to create a custom record field that only evaluates at sync time. |
| Real-Time Custom Record Fields | Incompatible | Custom record fields that evaluate in real time must be configured using one or more Custom Field functions. |
| Process Reports | Incompatible | Cannot be used to configure a process report. |
| Process Events | Incompatible | Cannot be used to configure a process event node, such as a start event or timer event. |