Forum | Appery.io

I made the tutorial three times yesterday. It has little to do with my issue i am afraid

Please try this:
1.On list item click save id to localStorage variable

1. Navigate to detail page
2. On detail page
3. add new query service from second DB collection http://docs.appery.io/tutorials/build...
4. map localStorage variable to where clause in your service
5. on detail page - Page show event - Invoke query service.

GREAT!!!

This was the answer that i was looking for!

Thank you!

One last question:

I have a column in my database but not all row entries have a value for that column.

When i map the results i want a text saying that there is no value instead of "undefined".

I tried using javascript:

What is wrong about the code?

Try this:

pre
if (!value) {
//put your code here
}
/pre

pre
if (!value) {
return 'there is no value';
}
/pre

Thank you Igor!

Great Support!