Strange AngularJS glitch

As a newbie to AngularJS programming, I recently encountered an issue while trying to return an object from a service in a sample application. Here is the snippet of code from my custom service:

this.getCompanyInfo = function(companyID)
{
    console.log( companyID );
    angular.forEach( companyInfo, function( coInf ) {
       if( coInf.companyID == companyID )
       {
           console.log(coInf);
           return coInf;
       }
   })
}

Within this code, the variable companyInfo holds an array with information about different companies represented by objects. The second console.log displays the following output:

Object {companyID: "CHCL", companyName: "Chilime Hydropower", stockPriceTrend: Array[4]}

In my controller, the code looks like this:

$scope.companyInfo = dataServices.getCompanyInfo( $routeParams.companyID);
console.log($scope.companyInfo);

However, when I check the console, it shows 'undefined' instead.

I am unsure where I went wrong and would greatly appreciate any assistance!

Best regards.

Answer №1

After completing the iterator function argument in forEach, make sure to return the actual value from your getCompanyInfo function, not just from the iterator itself. To achieve this, a simple for loop can be utilized to search for a match and return the value once found.

this.fetchCompanyData = function(id)
{
    var companyData, index, length;
    for(index=0,length=companyRecords.length; index<length;index++){
        if((companyData = companyRecords[index]).id === id ){
          return companyData ;
       }
    }

}

It is important to note that returning from the iterator function does not interrupt the looping process when using angular.forEach. The loop will continue seamlessly.

Answer №2

Revise the function to retrieve company information:

this.getCompanyInfo = function(companyID)
{
   var coInfo;
    console.log( companyID );
    angular.forEach( companyInfo, function( coInf ) {
       if( coInf.companyID == companyID )
       {
           console.log(coInf);
           coInfo = coInf;
       }
   })

   return coInfo;

}

The current implementation is not returning the value directly from the function but through the forEach loop, which can lead to issues with data retrieval.

This issue is independent of Angular framework.

UPDATE

You may also consider utilizing libraries like lodash or underscore for more efficient search and filter functionalities.

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