Creating new folder with current date as the folder name and saving output layers in the created folder in QGIS Model Designer

Question

As mentioned in the title, i want to create a new folder with current date and time as the folder name using model designer in QGIS. After that, outputs generated from all the other process in the subsequent steps will be saved inside the newly created folder as a format of GeoPackage.

However, i don't know how to specify the output path since the folder name would be different every time i run the "Create Directory" algorithm.

Attached below is the model designer that I've written so far.

Create Directory

Extract by expression

What should i specify the output path in Matching features in "Extract by expression" so that the output will be saved immediately inside the folder created from the previous step (Create Directory)?

Answer 1

Use Calculate Expression to define the path where can be called as a variable when saving output.