Polymer core-selector - using the selected data -

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I am creating a custom element to read files in a given directory (such as INI from / config directory Files) and display them as a wrapped list in a main selector then the user can then select a file from the list. All the work, except reading selected data, seems to be a junky code: 

  & lt; Div & gt; & Lt; Core-selector on-core-active = {{getFile selected]} selected = "" & gt; & Lt; Template repeat = "{{files in files}}" & gt; & Lt; RNC-commandfilelist & gt; & Lt; Span class = "rnc-fileindex" & gt; {{File.index}} & lt; / Span & gt; & Lt; Span class = "rnc-filename" & gt; {{File.commandFileName}} & lt; / Span & gt; & Lt; / RNC-commandfilelist & gt; & Lt; / Template & gt; & Lt; / Core-selector & gt; & Lt; / Div & gt; & Lt; / Template & gt; & Lt; Script & gt; Polymer ('rnc-getscaffoldini', {matchstring: ".ini", configuration directory: "configuration", getFile selected: function (e, extension, sender) {var file selected = descriptions.imetems child [1] .intext; console .log (file selected); var full path = this.configurationdirectory + "/" + file selected, this .setupbrit ('selected filename', file selected); this.setAttribute ('selectedfullpathname', fullPath);}}); & Lt; / Script & gt;

Code line: 

  var file selected = details. ITEM Children [1] .intertext;

The selected filename is fine. Is there a better way to get back to the selected data field?

published by selected model core-selector Property represents the selected data model. Repeated syntax here repeat = "{{files in files}}" & gt; means that each item contains a data model in which there is a property called scope data plus file . This means for each item, the selected file is stored in the selector as selectedModel.file . You can use the binding to access the data.

So, if you do this: 

  & lt; Chooser-selector selected = Module = "{{selectedModel}}" & gt;

then it may be: 

  changed the selected model: function () {// This. The selected model.file refers to that particular file Fuiw, you can also create it like this:  
  
  & lt; Template repeat = "{{files}}" & gt; & Lt; RNC-commandfilelist & gt; & Lt; Span class = "rnc-fileindex" & gt; {{Index}} & lt; / Span & gt;  
 
 Due to the various recurrence syntax, the data model is now only a file record, therefore: 
 
   
 
 Then you can do the following: 
 
  changed the selected file: function () {// it. The selected file refers to the selected file}

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