циклы angularjs с вызовом функций или методов

Question

Спасибо за помощь.

Прежде всего я новичок в angularjs, поэтому я бегу в то, что я надеюсь, это тривиальный вызов. , пожалуйста, дайте мне знать, если я должен изменить свой подход. Я запускаю его к проблеме, с которой мне нужна помощь.
Я пытаюсь вызвать функцию изнутри цикла angularjs.

Угловая установить и функцию, которая будет вызываться из внутри цикла

function switch_img24(v){ 

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    //excel icon 24 x 24 
    'xlsx': 'data:;base64,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', 
    'xls' : 'data:;base64,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', 

    //database icon 24 x 24 
    'db' : 'data:;base64,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', 
} 

return simg[v] 

} 

function allDocCtrl($scope){ 
    //this will eventually be an ajax call but for now I have it as a hidden field 
$scope.docsJson = $.parseJSON($("#doc_json").val()); 

//['file_name','regular_url','file_list','dir_name','dir_list'] 
rtn_html = '' 

$scope.getExt = function(str){ 
    var pattern = /\.[0-9a-z]+$/i; 
    var ext = (str).match(pattern); 
    var img = switch_img24(ext) 
    return img 
} 
} 

HTML

<input type='hidden' id='doc_json' value='{'file_list':[ 
    { 
"file_name":"file.doc", 
"url":"api/path..." 
}, 
{ 
"file_name":"file.pdf", 
"url":"api/path..." 
}, 
{ 
"file_name":"file.txt", 
"url":"api/path..." 
}, 
]}'/> 

<div id='due-diligence' ng-controller='allDocCtrl'> 

<li ng-repeat="doc in docsJson.file_list"> 
    {[{doc.file_name}]} who is {[{doc.url}]} years old. 
    <img src=getExt(doc.file_name) width='15' height='15' /> 
</li> 

</div> 

Таким образом, проблема у меня есть, чтобы вызвать getExt (doc.file_name) внутри цикла всякая помощь очень ценится!

Answer 1

Вы должны быть в состоянии использовать ng-src

<img ng-src="{{getExt(doc.file_name)}}"/> 

Пример на jsfiddle.

Другие ноты:

1. Вы отсутствуют некоторые ; внутри вашей scope.getExt() функции.
2. rtn_html = '' не имеет данных ; и кажется глобальным, отсутствует var?
3. getExt и switch_img24() может быть лучше выполнено с помощью фильтра. Таким образом, вы можете сделать:

<img ng-src="{{doc.file_name | getExtImage}}"/>