The comparator I described earlier is now implemented in the Run4Fun application. It did not take too much changes.
First I added a combo-box that allows a user to select by which json property and which order the collection should be sorted:
In the back-end I made it as followed:
So each option is language-supported. For actual sort options (and not the ‘Sort by’ intro option) I add some options:
- the first value is empty. This allows me to differentiate an actual sort option with the intro option
![🙂]()
- the second value is the json property to sort on
- the third option is the order, I have set descending as default, so when I want to have it ascending I have to provide a false value.
At every selection I have to reload the collection and put it in a viewscope that the repeat control uses as data-source.
For the Java MVC architecture I had to create a new method for the sort options:
Since the sortOrder comes in as string have to convert it to a boolean.
The combobox is bounded to a viewscope so the selected option stays in focus when I refresh the page:
Awesome. TV time!