Get all managed properties for search results javascript

Question

I'm following this post on how to do a Keyword Query search in SP 2013. I'm getting the results items that I would expect. Now I need to display info about them.

The results are a mix of several different content types. They share some managed properties, but they also have some unique ones. The examples I've found show that I have to add each managed property I want to retrieve like so:

var keywordQuery = new Microsoft.SharePoint.Client.Search.Query.KeywordQuery(context);
var searchString = 'parentLink:"'+baseName+'"';
keywordQuery.set_queryText(searchString);

keywordQuery.set_sourceId(RESULTSOURCEGUID);

var properties = keywordQuery.get_selectProperties();
properties.add("Name");
properties.add("ContentType");
...and so on for each managed property name

But since I don't know what types will be in any given results how do I know which properties to request?

Is there a way to say "Give me all the managed properties associated with the returned item?"

Answer 1

There is a trick for this.

You can add managedproperties(filter=600/0/*) as a refiners option to your query. Like this: &refiners='managedproperties(filter%3d600%2f0%2f*)'

Note that query should return at least one result. So you can use this query:

/_api/search/query?querytext='*'&rowlimit=1
&refiners='managedproperties(filter%3d600%2f0%2f*)'
&sourceid='[your source ID]'

PrimaryQueryResult.RefinementResults.Refiners.Entries will contain all fields, including managed. If you want to exclude default fields, grab all fields from first item of result: PrimaryQueryResult.RelevantResults.Table.Rows and exclude them from Refiners list.

Answer 2

Yes if you add this to the display template, you will be able to see ALL the properties:

for (var p in ctx.CurrentItem) {
    console.log(p + ":" + $getItemValue(ctx, p)); 
}