ngOptions compare by actual value

My webserver (node.js) serves a JSON file with a list of languages in the format: 

{ "en" : "English", "fr" : "French" }
and a separate JSON settings dictionary like this: { "currentLanguage" : "en" }. The select statement is as follows:

<select ng-options="for (code, name) in languages track by code" ng-model="config.currentLanguage"></select>

Unfortunately, this results in a blank option being added and selected because it compares values by reference rather than value. Is there a way to have it compare values instead? It seems like a common issue to separate current selection data from the options generation data. Is there a different approach I should take to work around this?

javascriptjsonangularjsng-options

Answer №1

It seems like the issue you are facing may not be related to reference checking. The syntax being used is disregarding the optional "select" parameter, leading to the default behavior of binding the value taking place. This results in binding a name to config.currentLanguage which initially contains a "code" value. It appears that this mismatch is likely why you are unable to select "en" as it is trying to find an exact match in a list that only contains "English".

To address this situation, if your intention is to store the code, adjust your ng-options in the following manner: 

ng-options = "code as name for (code, name) in countries track by code"

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