如何在Meteor中获取文件列表到模板？

Question

New to meteor, I'm having a hell of a time with the whole client/server thing. Super fun.

I want to read a list of all files that are in a folder, and just print them on the UI, on a template. It has to be possible. Here's the code.

js file:

var availableFiles = [];
if (Meteor.isServer) {
    var fs = Npm.require('fs');
    availableFiles = fs.readdirSync(process.env.PWD + '/public/uploads');
    console.log(availableFiles);
}

Router.map(function() {

    this.route('home', {
        path: '/',
        template: 'home',
        data: {files: availableFiles}
    });
});

html file:

<template name="home">
{{#each data.files}}
    {{this}}
{{/each}}
</template>

I've tried to put the fs calls inside a function on data on the route definition, but I get "Npm is not defined" errors. I don't know if that's how it should be structured or not, remember, newb here. Any help would be greatly appreciated.

Answer 1

I'd probably do this with a reactive array ( http://reactivearray.meteor.com/ ) and a Meteor method. Something like:

if (Meteor.isServer) {
    var fs = Npm.require('fs');
    Meteor.methods({
        getFiles() {
            return fs.readdirSync(process.env.PWD + '/public/uploads');
        }
    });
}

if( Meteor.isClient ) {
    Template.home.onCreated( function() {
        Template.instance().files = new ReactiveArray();
        Meteor.call('getFiles', function(error, result) {
            if( error ) {
                console.log( error );
            } else {
                Template.instance().files = files.concat( result );
            }
        });
    });
    Template.home.helpers({
        files() {
            return Template.instance().files.array();
        }
    });
}

Router.map(function() {

    this.route('home', {
        path: '/',
        template: 'home',
        data: {files: availableFiles}
    });
});

Syntax might not be perfect, but that should get the point across. You'll also need to change your template to {{#each files}}