Angular Default Value if Binding is Null

Question

I've seen a similar question and followed it to a tee. Angular Template Default Value if Binding Null / Undefined (With Filter)

My object looks like this:

{
  "image": {
    "icon_url": "http://static.giantbomb.com/uploads/square_avatar/9/93770/2496414-dying-light-2013523175751_8.jpg",
    "medium_url": "http://static.giantbomb.com/uploads/scale_medium/9/93770/2496414-dying-light-2013523175751_8.jpg",
    "screen_url": "http://static.giantbomb.com/uploads/screen_medium/9/93770/2496414-dying-light-2013523175751_8.jpg",
    "small_url": "http://static.giantbomb.com/uploads/scale_small/9/93770/2496414-dying-light-2013523175751_8.jpg",
    "super_url": "http://static.giantbomb.com/uploads/scale_large/9/93770/2496414-dying-light-2013523175751_8.jpg",
    "thumb_url": "http://static.giantbomb.com/uploads/scale_avatar/9/93770/2496414-dying-light-2013523175751_8.jpg",
    "tiny_url": "http://static.giantbomb.com/uploads/square_mini/9/93770/2496414-dying-light-2013523175751_8.jpg"
  },
  "name": "Dying Light",
  "original_game_rating": null,
  "original_release_date": null,
  "objectID": "346569380"
}

I'm wrapping the left-hand side expression in brackets, but it doesn't display "TBA" for items that have a year of null.

<span>{{ (getDate(hit.original_release_date) | date:'yyyy') || 'TBA' }}</span>

I have a feeling, it's because I'm referencing a function and already using a set of parentheses. How can I solve this problem...?

Any help with this is appreciated. Thanks in advance!

UPDATE:

Here's the getDate() function:

$scope.getDate = function(date) {
  return $filter('dateToISO')(date);
};

And the dateToISO filter:

.filter('dateToISO', function() {
  return function(input) {
    var dateTime = input.split(" ");
    var date = dateTime[0];
    var datePartials = date.split("-");
    var time = dateTime[1];
    var timePartials = time.split(":");
    var formattedDate = new Date();
    formattedDate.setFullYear(datePartials[0]);
    formattedDate.setMonth(datePartials[1]-1);
    formattedDate.setDate(datePartials[2]);
    formattedDate.setHours(timePartials[0]);
    formattedDate.setMinutes(timePartials[1]);
    return formattedDate;
  };
})

@tasseKATT Updated the question with the getDate function. Using Angular 1.2.8. — realph
– realph, Commented Dec 15, 2014 at 18:40
Can't replicate it so far. Can you show the custom dateToISO filter too? — tasseKATT
– tasseKATT, Commented Dec 15, 2014 at 18:44
Are you sure, that null returned? May be it's string 'null' ? — vp_arth
– vp_arth, Commented Dec 15, 2014 at 18:45
Implement default filter also. and use it as ...|date:'yyyy'|default:'TBA' — vp_arth
– vp_arth, Commented Dec 15, 2014 at 18:46

vp_arth · Accepted Answer · 2014-12-15 19:03:15Z

6

Implement default filter also.

app.filter('default', [function(){
  return function(value, def) {
    return value || def;
  };
}]);

And use it as:

<span>{{getDate(hit.original_release_date) | date:'yyyy' | default: 'TBA'}}</span>

Update: also your dateToISO filter may fails, if undefined or null been received.
Check its input.

.filter('dateToISO', function() {
  return function(input) {
    if (!input || !input.match(/^\d{2}-\d{2}-\d{4} \d{2}\:\d{2}\:\d{2}$/)) return;
    var dateTime = input.split(" ");
    var date = dateTime[0];
    var datePartials = date.split("-");
    var time = dateTime[1];
    var timePartials = time.split(":");
    var formattedDate = new Date();
    formattedDate.setFullYear(datePartials[0]);
    formattedDate.setMonth(datePartials[1]-1);
    formattedDate.setDate(datePartials[2]);
    formattedDate.setHours(timePartials[0]);
    formattedDate.setMinutes(timePartials[1]);
    return formattedDate;
  };
})

Add:

And in angular, you always have to do:

<span ng-if="hit.original_release_date">{{getDate(hit.original_release_date) | date:'yyyy'}}</span>
<span ng-if="!hit.original_release_date">TBA</span>

edited Dec 15, 2014 at 19:03

answered Dec 15, 2014 at 18:50

vp_arth

15k4 gold badges43 silver badges72 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

realph Over a year ago

Still returning as "undefined". Weird. Is there not a way to separate the right-side expression and use a function on the left-hand side?

vp_arth Over a year ago

where is your date filter?

realph Over a year ago

It comes after my module. angular.module('myApp', ['ngRoute','ngSanitize' ]).filter('dateToISO', function() {....

vp_arth Over a year ago

no dateToISO, date. which gives you yyyy... Anyway, see simple way to solve your issue in bottom of answer.

realph Over a year ago

Ahh, I guess that's an alternative way to do it. I guess that would work, but would also like to find out why I can't do a lh rh expression with a function.

|

Tyler Roth · Accepted Answer · 2014-12-15 18:55:31Z

3

Try this:

{{hit.original_release_date ? (hit.original_release date | date:'yyyy') : 'TBA'}}

edited Dec 15, 2014 at 18:55

answered Dec 15, 2014 at 18:45

Tyler Roth

434 bronze badges

1 Comment

realph Over a year ago

It's printing to the page as "undefined".

Collectives™ on Stack Overflow

Angular Default Value if Binding is Null

2 Answers 2

6 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

6 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related