Filter Reference

In addition to the built-in Jinja filters listed here, the following additional features are implemented in the ivigenerator.



Returns the C++ type for the passed symbol.

E.g. QString for a symbol of type "string".


Return the C++ type for the passed symbol. This returns the same type as return_type(), but already prepared to be used as a parameter for methods.

E.g. "const QString &<name>" for a symbol of type "string"


Returns the getter name of the property, if defined by the @getter_name annotation. Otherwise retuns the passed symbol.


Returns the setter name of the property, if defined by the @setter_name annotation. Otherwise retuns the passed symbol.


Returns the default value for the passed symbol. Models are initialized as nullptr

default_value(symbol, zone="=")

Returns the default value for the passed symbol set by the @default annotation. If not set uses default_type_value instead.

The zone parameter is used to identify different default values per zone.


Returns the C++ class name for this model.


Returns the name defined by the @type annotation for the passed flag. If this is not set, tries to pluralize the passed name by adding an 's' at the end.


Parses the passed comment string and adds every javadoc command into its own group. Sentences without tag are put into the 'description' group.

{% with doc = comments|parse_doc -%}
{% if doc.brief %}    \brief {{doc.brief}}
{% endif %}

{% if doc.description %}
{% endif %}
{% endwith %}


Only lowers the first character of the given string.


Returns the minimum value for the passed property using the @range or @minimum annotations.


Returns the maximum value for the passed property using the @range or @maximum annotations.


Removes the 'QT' at the beginning, if the string starts with it.


Returns the domain values for the passed property using the @domain annotation.

enum_value(value, module_name)

Returns the fully qualified C++ name of the given value. The passed module_name is used as C++ class name containing the enum.

Also supports passing '|' connected values.

tag_by_path(symbol, path, default_value=False)

Find the tag given by its full path in the object hierarchy, like property.config_sim.zones.right. If some parts of the path are missing, return None.

conf_sim_tag(symbol, path, default_value=False)

Find the tag, given by its path, located under the "config_simulator" sub-object. Returns None, if parts of the path are missing.


Returns a JSON representation of the given obj.


Returns true if any of the given properties has @range or @domain annotations.


Returns the property domains for the given properties formated in JSON.


Returns the name of the interface/module for use in QML. This name is defined by the @qml_type annotation. This annotation is optional: if not provided, the interface name is used, for modules module_name is used.

qml_control(symbol, backend_obj)

Returns the QML code for the control (or group of controls) to represent the editing UI for the passed symbol.


Returns the name of the property of the QML control to be bound with.

E.g. "value" for a Slider and "checked" for a CheckBox.


Returns the parameters for calling the signal using the values from the UI controls.


Returns the includes for the structs that the interface or a struct depends on. The returned strings are complete and in format #include "struct.h".


Returns the text of the passed comment without the leading/trailing comment tokens ('/**', '*').


Returns the correct type for the symbol, to be used inside the qmltype templates.

Global Functions


Throws an error with the given msg


Reports a warning with the given msg

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