Bind widget to properties dynamically

[fmanniti]

I have THINGs that will be created runtime by the user and these THINGs have some fixed properties and some others that will be created dynamically; the only thing those properties have in common is they are all NUMBER.

Now, I have a gadget with a widget inside (let's say a LED widget) which should be connected by one of those dynamics properties.

I cannot do it by composer since I don't know the properties in advance. My question is:

is there a way to bind properties to a widget by service?

So that I could make a gadget with a dropdown list and the value displaied changes according to what is selected by the list.

Thanks

[CarlesColl]

Why don't you list Thing's properties on a DropDown List?

[CarlesColl · Accepted solution]

Also you can create a Inner Mashup which receives as parameter the Thing Name and the Property Name and acts accordingly.

I have the same use case you say and well tougth it's not a problem at all. Well at the end for me it's everything Dynamic, then almost never I bind to specific properties...

[fmanniti]

Thanks

It's what I needed

[fmanniti]

Just one more question, maybe you can help me.

I have my mashup so designed:

Leftside bar with the list of all THINGS, on the right my dashboard.

Now, let's say that, on my leftbar list I have those two things with the following properties (dynamically added)

ELEMENT_1 --> Properties: Bending, Temperature

ELEMENT_2 -->Properties: Flexion, Grade

now, on my widget I have a LED display and a dropdown menu which lists my properties. Let's say I select Bending for ELEMENT_1 and Flexion for ELEMENT_2.

What happens is that when I switch from ELEMENT_1 to ELEMENT_2 my widget doesn't keep in memory my previous choice for ELEMENT_2.

I mean:

I select Bending for ELEMENT_1 and LED display the bending value, then I switch to ELEMENT_2 and the LED display is empty, so I select Flexion and LED displays flexion values but, when I switch back to ELEMENT_1 it is still blank.

So, is there a way to "tell" my widget to 'memorize' the choice for each ELEMENT?

[CarlesColl]

You will have to "memorize" on User Preferences or Session Variable and set SelectedValue on DropDown list on Mashup Load ( if it's different Mashup ) or Refresh ( if it's the same inner mashup )

[fmanniti]

Sorry, I don't really understand this last thing you said:

If on my dashboard I will have 10 gadget, it means I must have on user preferences 10 properties to "memorize" so that, anytime I close the mashup or refresh it I won't lose my selection.

I don't really understand how you mean to bind the selection in order to memorize it.

[CarlesColl]

You said id, you will need 10 properties ( or an infotable ) to memorize user preferences.