Gábor Gábor - 3 months ago 10
Node.js Question

Node.js express, handlebars - get elements of an array

I have an array like this:

var arr = ["element1","element2"];


and I would like to get the elements of it in a handlebars file.

I googled with no result the only solution what i found is this:

{{#each files}}
<a href="/"{{path}}"">{{title}}</a>
{{/each}}


But this is not good for me because I would like to achive that all of my files in a directory could be downloadable.

The code what I tried on the server side:

app.get('/download',function(req,res){
var items;
fs.readdir('./download',function(err,files){
items = files;
});

res.render('download',{
files:items
});
});


And I don't know how to iterate on the client side to make all of the elements in the array downloadable.

On the clien side I have an unordered list which will contain the links. The problem is, that I have no idea how to achive that.

The code on the clien side:

<div id="container">
<div class="highlight">
<img src="img/highlight.png"></img>
<p>A Click to download</p>
</div>
<ul>
<li class="RoundedAll"><a href="/">Back</a></li>
</ul>
<br />
<ul>
<!-- What should I put here? -->
</ul>
</div>


Thanks for answers.

Answer

First of all, lets assume that your files:items is a handlebar'd array looking kinda like this.

{ files:['filenameOne.ext', 'filenameTwo.ext', 'filenameThree.exe'] };

Now when you've written this on the response and you want to loop over the array in handlebars.js this is how your HTML should look like, using your code.

<div id="container">
    <div class="highlight">
        <img src="img/highlight.png"></img>
        <p>A Click to download</p>
    </div>
    <ul>
        <li class="RoundedAll"><a href="/">Back</a></li>
    </ul>
    <br />
    <ul>
        {{#each files}}
        <li>{{this}}</li>
        {{/each}}
    </ul>
</div>

The <li>{{this}}</li> will contain the filename's that is contained within your list. To then access that you would have to make a <a> that links to a controller, app.get('/getActualFile', function(){ //serve the file here }); and then write the fetched file on the response.

Hope this points you in the right the direction and that the use of an iterator in handlebars is a bit more obvious.

I myself does not prefer handlebars but that is since i'm not used to it completely. I myself like this template-language for Node.js better, http://paularmstrong.github.com/swig/

It features a bit more "clear" syntax but is probably worse than handlebars considering the diffrent ways you can customize Handlebars.