What is the best way to remove specific items from an AngularJS ng-repeat loop?

Is there a way to filter out certain items in an ng-repeat loop?

For instance, consider the following simplified code snippet:

<div class="row" data-ng-repeat="entry in data.feed.entry | orderBy:'gsx$timestamp.$t':true">
{{entry.gsx$jobID.$t}}
</div>

I also have another scope object named exclusionData with a similar structure. I want to exclude any entries from the first ng-repeat if they exist in exclusionData.feed.entry.gsx$jobID.$t.

Alternatively, is there a more efficient way to handle this filtering logic within my controller? Both the data and exclusionData are sourced from separate JSON feeds.

javascriptjsonangularjsangularjs-ng-repeat

Answer №1

To exclude the matching data, simply use an ng-if statement and add a negation to make it false.

<div 
    class="container"
    ng-repeat="(k, e) in dataset.feed.entries | orderBy:'gsx$timestamp.$t':true"
    ng-if="!excludeData.dataset[k]gsx$jobID.$t">
    {{e.gsx$jobID.$t}}
</div>

Answer №2

One option is to use the filter code provided below, or alternatively employ an ng-if/ng-show directive

<div class="row" data-ng-repeat="entry in data.feed.entry | orderBy:'gsx$timestamp.$t':true | filter: {gsx$exlucde.$t: true}">
{{entry.gsx$jobID.$t}}
</div>

data.feed.entry = [{
    gsx$jobID.$t: 'something',
    gsx$exlucde.$t: true,
    gsx$timestamp.$t: '1/1/1990'
}]

Answer №3

To achieve this, consider using a filter directive within your repeat function. Alternatively, you can implement this in your controller logic.

The approach to take depends on the overall Object-Oriented design of your application.

Answer №4

Here is an example of how you can create a custom filter:

angular.module('appFilters', []).filter('customFilter', function() {
    return function(input, key) {          
      var filteredList = [];
      for(var i = 0; i < input.length; i++){
        var result = _.find($scope.exclusionData, function() { // Feel free to customize this function.
          // Your filtering logic goes here    
        });

        if(result){              
          filteredList.push(input[i]);
        }
      }
      return filteredList;
    };
  });

If you don't have underscore in your project, you can create your own search function.

To use the filter in your template, do the following:

<div class="row" data-ng-repeat="item in dataList | customFilter | orderBy:'property':true">
  {{item.propertyName}}
</div>

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