function updatePhotosMessage(){
    console.log('change is now');
    var imageInput = document.getElementById('imageInput');
    var count = imageInput.files.length;
    if(count>0){
        document.getElementById('imagesInfo').innerHTML = count + ' photos selected';
    } else {
        document.getElementById('imagesInfo').innerHTML ='';
    }
}




function addPost(){
    var id;
    var title;
    var text;
    var imageInput;
    id = $('#post_ID').val();
    title = $('#postTitle').val();
    text = $('#postText').val();
    imageInput = document.getElementById('imageInput');
    var call;
    var callDone = function(post){
        var post_ID = post.ID;
        $('#post_ID').val(post_ID); // we store the ID in a hidden input in case the user presses back to edit
        var imageData = new FormData(); // we can only upload the images using a formData
        var left = imageInput.files.length;
        for(var i = 0; i < imageInput.files.length; i++){
            imageData = new FormData();
            imageData.append('imageFile', imageInput.files[i]);
            imageData.append('post_ID', post_ID);
            imageData.append('index', i);
            var upload = ImageManager.addImageToPost(imageData);
            upload.done(function(image){
                left--;

                $('#imagesInfo').html(left + ' photos left, please wait.');
                if(left==0){
                    fn.load('menu/posts/selectPostCategory.html', renderCategoriesListForSelection('', post_ID));
                    //fn.with(renderCategoriesListForSelection('', post_ID));
                }
            });
        }


    }
    if(id){
        // title, text, category_ID, post_ID
        var postCall = PostsManager.requestPostByID(id);
        postCall.done(function(post){
            call = PostsManager.savePost(title, text, post.category_ID, id);
            call.done(function(samePost){callDone(samePost)});
        });
    } else {
        call = PostsManager.savePost(title, text, null);
        call.done(function(post){callDone(post)});
    }
    document.getElementById('imagesInfo').innerHTML = imageInput.files.length + ' photos selected';
//  $('#imagesInfo').html(imageInput.files.length + ' photos selected');


}