Element properties are undefined when rendering template

[mjgreen145]

Hey,

I having an issue trying to do something which seems like it should be simple.
When using a function to get a computed property, the property of the element is undefined.

See this JSBin: http://jsbin.com/dehiloqawo/edit?html,console,output

I have found that after rendering (where I am logging out the property, it exists. Also, if I wrap the div inside a dom-if template with a condition which is always true, then it renders correctly:

http://jsbin.com/jifiweyade/edit?html,console,output

I don't know whether I'm going about this the wrong way, or whether there is an issue with Polymer. It seems related to either #310 or #1500, but both of these seems to have been solved.

Any help greatly appreciated.

[kevinpschaaf]

Computed properties only compute when their dependencies are set or change. Your _getDisplayName function has a dependency on this.name but didn't declare it as a dependency in its signature, and so it is not being re-computed when name is set. Declaring name in the function signature (e.g. _getDisplayName(name) tells Polymer to compute whenever name changes.

Working example:
http://jsbin.com/qipaja/edit?html,console,output

[mjgreen145]

Thanks very much @kevinpschaaf