angularJS全局过滤器模块

Question

I am having trouble getting my custom filter to work.

I have a module of global filters:

angular.module('globalFilters', []).filter('dateRange', function () {
    return function(item) {
        console.log(item);
        return true;
    }
}); 

This is injected into my app on creation. I am trying to apply this to an ng-repeat:

tr.pointer(ng-repeat="asset in completed | dateRange", ng-animate="'animate'", ng-click="selectAsset(asset);")
    td {{asset.Name}}

However adding this filter will filter all assets out of table. To try to isolate the problem I am returning true for the function to display all assets but it is not working.

Upon logging item to the console, result appears to be an array of all assets so I guess something is wrong.

I was following this tutorial https://docs.angularjs.org/tutorial/step_09

Thanks!

Answer 1

You are filtering an array...so your filter function needs to return an array.

.filter('dateRange', function () {
    return function(itemArray) {
        if(!itemArray){
            return null
        }else{
             return itemArray.filter(function(item){
                 // conditions of filter
             });
        }            
    }
});

Answer 2

When you define a custom filter function, the value passed into the filter is replaced by the value returned from the filter, so you are replacing item with true .

For a filter which logs the input without changing it, just return the input:

return function(item) {
    console.log(item);

    return item;
}