Meteor, How do I change a template (view) on event? - javascript

I'm building an app with two views: home & view list
When the user clicks on a list's name on the home view, it should change to the "view list" template. I've added a session variable called 'view', setting it to 'home' on startup. When a click event is detected on one of the items (list name) on the home screen, it changes the value of view to 'viewList'. Then in the HTML, I have an if statement to show the home template if 'view' is 'home', otherwise show the 'viewList' template.
I can tell the first part works because I'm outputting the value of 'view' and it does output the value "viewList" when you click on a list name, it just doesn't change the template.
What am I missing?
My code:
mylists.js:
Lists = new Mongo.Collection("lists");
if (Meteor.isClient) {
Meteor.startup( function() {
Session.set("view", "home");
});
Template.main.helpers({
view: function () {
return Session.get("view");
}
});
Template.home.helpers({
lists: function () {
return Lists.find({}, {sort: {lastUsed: -1}});
}
});
Template.home.events({
"submit #new-list": function (event) {
var name = event.target.listName.value;
Lists.insert ({
name: name,
createdAt: new Date(),
lastUsed: new Date()
});
},
"click .list-row": function (event) {
Session.set("view", "viewList");
}
});
}
mylists.html:
<head>
<title>My Lists</title>
</head>
<body>
{{> main}}
</body>
<template name="main">
{{view}}
{{#if view "home"}}
{{> home}}
{{else}}
{{> viewList}}
{{/if}}
</template>
<template name="home">
<header>
<h2>My Lists</h2>
</header>
<ul id="lists">
<li>
<form id="new-list">
<input type="text" name="listName" value="My List 1">
<input type="submit" value="Save">
</form>
</li>
{{#each lists}}
{{> list}}
{{/each}}
</ul>
</template>
<template name="viewList">
<header>
<h2>View List</h2>
</header>
<!-- list details will show here -->
</template>
<template name="list">
<li class="list-row" id="{{_id}}">{{name}}</li>
</template>

If you want to change from templates view i suggest you tu install the iron:router package.
run
meteor add iron:router
lester create the routes.js on the /lib folder
now lets do this step by step.
First create 1 template on myAppName/client/views/layout.html
<template name="layout">
{{> yield}}
</template>
and update the routes.js with this code.
Router.configure({
layoutTemplate: 'layout' // here we say that layout template will be our main layout
});
Now on the same routes.js create this 2 routes.
Router.route('/home', function () {
this.render('home');
});
Router.route('/viewList', function () {
this.render('viewList');
});
With this if you navigate to localhost:3000/home or /viewList you will see the html content on there.
NOTES: <header> inside the templates you don't need it.
Now this is just an example because i don't really know whats your main idea here.
you are calling {{#each lists}} inside the home template, so whats the point of having the viewList template?
Now if you want to create individual and dynamic routes for each list you can try this.
Router.map(function () {
this.route('listViews', {
path: '/listViews/:_id',
waitOn: function(){
return Meteor.subscribe('lists')
},
data: function(){
return Lists.findOne({_id: this.params._id});
}
});
});
Now with this, you have dynamic templates for each object on the List collection, if you go to localhost:300/listView/35dwq358ew for example you will get render the listView with some data.
you can do stuff like this inside the template list
<template name="list">
<li class="list-row" id="{{_id}}">{{name}}</li>
<li>Check this List in detail</li>
</template>
and the viewList template will look like this.
<template name="viewList">
<h2>{{title}}</h2>
<!-- list details will show here -->
{{informationAboutList}}
</template>

Related

Template is looping through users collection when autopublish is removed

I've written code for a website which allows you to login and chat with other users. The root page has a list of the users you can chat to. Here's the code:
<!-- Top level template for the lobby page -->
<template name="lobby_page">
{{> available_user_list}}
</template>
<!-- display a list of users -->
<template name="available_user_list">
<h2 class="cha_heading">Choose someone to chat with:</h2>
<div class="row">
{{#each users}}
{{> available_user}}
{{/each}}
</div>
</template>
<!-- display an individual user -->
<template name="available_user">
<div class="col-md-2">
<div class="user_avatar">
{{#if isMyUser _id}}
<div class="bg-success">
{{> avatar user=this shape="circle"}}
<div class="user_name">{{getUsername _id}} (YOU)</div>
</div>
{{else}}
<a href="/chat/{{_id}}">
{{> avatar user=this shape="circle"}}
<div class="user_name">{{getUsername _id}}</div>
</a>
{{/if}}
</div>
</div>
</template>
and the helper functions:
Template.available_user_list.helpers({
users:function(){
return Meteor.users.find();
}
})
Template.available_user.helpers({
getUsername:function(userId){
user = Meteor.users.findOne({_id:userId});
return user.username;
},
isMyUser:function(userId){
if (userId == Meteor.userId()){
return true;
}
else {
return false;
}
}
})
I've written publish/subscribe code for Chats collection but that's for when you click on one of the users and sends them a message. Now that I've removed autopublish, in the root page, the user can't see any other users to click on. Can someone please help with this issue?
Meteor.users will only publish the current users profile if autopublish is removed.
Add the below publish to your server code:
Meteor.publish(null, function () {
if (!this.userId) return this.ready();
return Meteor.users.find({});
});
A null publish will be auto-published and auto-subscribed by the client if autopublish is removed.
Also, remember to include only those fields that are not sensitive. For, Eg. you might want to omit the password field or the services field.
Something like this:
Meteor.users.find({}, {
fields: {
profile : 1,
emails : 1
}
});

meteor saying Iron Router is unresolved with Intellij

I'm using Intellij and Meteor to make an application and I'm trying to use Iron Router to create multiple pages, but when I call the Router in the Javascript file, it says that Router is an unresolved variable and that route is an unresolved function or method. I've checked the meteor folder and it appears that all the Iron Router files loaded fine. At the bottom of the root page I am working on it says
Oops, looks like there's no route on the client or the server for url:
"http://localhost:3000/."
If I navigate to http://localhost:3000/about, which is the only page I have a route set up for yet, the page is blank, except for my nav bar.
Here is my javascript file...
Items = new Mongo.Collection("items");
Found_items = new Mongo.Collection("found_items");
Router.route('home', {path: '/'}); // Add this route
Router.route('about', {path: '/about'});
if (Meteor.isClient) {
// This code only runs on the client
Template.body.helpers({
items: function () {
return Items.find({});
},
found_items: function () {
return Found_items.find({});
},
priceSum: function(){
var userItems = Found_items.find({
userId: this._id
}).fetch();
var prices = _.pluck(userItems, "price");
var totalTaxed = _.reduce(prices, function(sum, price){
var total = sum + parseFloat(price);
return total + (total * 0.04712);
}, 0);
return totalTaxed.toFixed(2);
},
calcTax: function () {
var userItems = Found_items.find({
userId: this._id
}).fetch();
var prices = _.pluck(userItems, "price");
var tax = _.reduce(prices, function(sum, price){
return (sum + parseFloat(price)) * 0.04712;
}, 0);
return tax.toFixed(2);
}
});
Template.body.events({
"submit .new-item": function (event) {
event.preventDefault();
var text = event.target.text.value;
Items.insert({
text: text,
createdAt: new Date(),
owner: Meteor.userId(),
username: Meteor.user().username
});
event.target.text.value = "";
}
});
Template.item.events({
"click .found": function (event, template) {
event.preventDefault();
var price = template.find('[name="price"]').value;
var text = template.find('.text').textContent;
Items.remove(this._id);
Found_items.insert({
text: text,
price: price
});
}
});
Template.body.events({
"click .remove": function(event) {
event.preventDefault();
Found_items.remove(this._id);
}
});
Accounts.ui.config({
passwordSignupFields: "USERNAME_ONLY"
});
}
And here is the HTML file
<head>
<title>Grocery List</title>
</head>
<template name="home">
<body>
<div>
<ul class="menu">
<li class="menuItem">{{> loginButtons}}</li>
<li class="menuItem">Home </li>
<li class="menuItem">About</li>
</ul>
</div>
{{#if currentUser}}
<div class="container">
<header>
<h1 id="title">Grocery List</h1>
<form class="new-item">
<input type="text" name="text" placeholder="Type to add new items" />
</form>
</header>
<ul>
{{#each items}}
{{> item}}
{{/each}}
</ul>
</div>
<div class="container">
<header>
<h1>Items Found</h1>
</header>
<ul>
{{#each found_items}}
{{> found}}
{{/each}}
</ul>
</div>
<div class="container">
<header>
<h3>
Tax: ${{calcTax}}
</h3>
<h2>
Total: ${{priceSum}}
</h2>
<button class="save">Save list</button>
</header>
</div>
{{else}}
<h3>Please log in first.</h3>
{{/if}}
</body>
</template>
<template name="item">
<li>
<button class="found">Got it!</button>
<input type="number" name="price" placeholder="Sale Price" />
<span class="text">{{text}}</span>
</li>
</template>
<template name="found">
<li>
<button class="remove">×</button>
<span class="text">{{text}}</span>
<span class="price">{{price}}</span>
</li>
</template>
<template name="about">
<head>
<title>About Grocery List</title>
</head>
<body>
<div>
<ul class="menu">
<li class="menuItem">{{> loginButtons}}</li>
<li class="menuItem">Home </li>
<li class="menuItem">About</li>
</ul>
</div>
<div class="container">
<header><h1>About</h1></header>
<p>This application was created using Meteor. It can be used to make, save and update grocery lists. Once the user is in the store, they can use it to check off items on the list, put in the price and see the total, with tax.<br>
Users can also save their previous lists to either reuse them, or compare current prices to previous ones.<br>
Future implementations of this page would also allow the user to change the tax rate depending on their location, and include coupons and other discounts in the pricing.</p>
</div>
</body>
</template>
Always add a route for the root.
Items = new Mongo.Collection("items");
Found_items = new Mongo.Collection("found_items");
Router.route('home', {path: '/'}); // Add this route
Router.route('about', {path: '/about'});
BTW, you have a head and body section within your template. That is rendered but does not have an effect in your browser.
Use the following syntax with IR's template helper pathFor:
<ul class="menu">
<li class="menuItem">{{> loginButtons}}</li>
<li class="menuItem">Home</li>
<li class="menuItem">About</li>
</ul>
In order to get your code working, I also fixed a couple of issues:
Removed head and body tags in templates.
Renamed Template.body.helpers to Template.home.helpers.
Renamed Template.body.events to Template.home.events.
Now it is adding new items to the collection and showing items.
you have to add a route with / to call localhost:3000
routing example
Router.configure({
layoutTemplate: 'layout',
});
Router.route('/', function () {
this.render('home');
},{
name: 'home'
});
Router.route('/about', function () {
this.render('about');
},{
name: 'about'
});
html
<template name="layout">
{{> yield}}
</template>
<template name="home">
<p>i am the homepage</p>
</template>
<template name="about">
<p>i am the about page</p>
</template>

How do I make {{#each}} work with these templates?

I have been reading these tutorials on Spacebars.
Understanding Spacebars by David Burles
Meteor's Spacebars README on Github
Discover Meteor's Spacebars secrets
I think I can understand pretty good, but I am having this problem
i have the main.html template like this
<template name="main">
<div class="container">
<section id="bl-work-section">
<div class="bl-box">
<h4 class="sin">Próximo</h4>
<h2 id="titulo1" class="sin"></h2>
<h4 class="sin" id="sub1"></h4>
</div>
<div class="bl-content">
<h2>Lunes 25 de Noviembre del 2014</h2>
{{#each mostrarLunes}}
{{> Lunes}}
{{/each}}
<a></a>
</div>
<span class="bl-icon bl-icon-close"></span>
</section>
<!-- Panel items for the works -->
<div class="bl-panel-items" id="bl-panel-work-items">
{{#each mostrarLunes}}
{{showPromos}}
{{/each}}
</div>
</div>
</div><!-- /container -->
</template>
So like you guys see im calling 2 templates inside main template and that 2 templates look like this
Lunes.html Template
<template name="Lunes">
<ul id="bl-work-items">
<li data-panel="panel">
<div class="oferta">
<h3>Promocion: {{metadata.nombrePromo}} </h3><br><small>Descripcion:{{metadata.descripcionPromo}}</small>
</div></li><br><br>
</ul>
</template>
showPromos.html Template
<template name="showPromos">
<div data-panel="panel">
<div>
<h1>Estoy viendo esto en la segunda pagina </h1>
<h3>Nombre Promo {{metadata.nombrePromo}}</h3>
<p>Descripcion promo.{{metadata.descripcionPromo}}</p>
</div>
</div>
<nav>
<span class="bl-icon bl-icon-close"></span>
</nav>
</template>
So what is the problem? well if we look at the template Lunes and showPromos, i have a Data-Panel="panel", but its seems like that data panel don't work when i wrap that value on the {{each}} tags, because if i use, that {{each}} tags outside the data-panel selector it works, so its seems like its not working seems like they don't have connection.
so im asking if there is a way to connect that value? already try helper attributes like the 3rd link says, and don't work, the attributes helpers look like this
Template.main.helpers({
attributes: function () {
return {
dataPanel: "prueba",
}
}
});
Helper mostrarLunes
Template.main.helpers({
'mostrarLunes' : function(){
return Promociones.find({'metadata.diaOferta' : { $in: ['Lunes'] } });
}
});
Looks like the data context isn't set. Try creating a template helper for your other templates with the data (I don't understand Spanish so I'm assuming this is the MongoDB cursor you need...
Templates.lunes.helpers({
data: function() {
return Promociones.find({'metadata.diaOferta' : { $in: ['Lunes'] } });
}
});
Templates.showPromos.helpers({
data: function() {
return Promociones.find({'metadata.diaOferta' : { $in: ['Lunes'] } });
}
});

loading meteor template on click events

So, Basically i'm new to meteor(0.8.2) and trying to create a basic app having two templates(addnewPlace and Map) and a single button. What i need to get is that, when i click on "Add new Place" button, template "addNewPlace" should be loaded in body or else template "Map" should be loaded. Help will be appreciated :)
My html code:
<body>
{{> menu}}
{{> body}}
</body>
<template name="body">
{{#if isTrue}}
{{> addnewPlace}}// tested this template individually, it works.
{{else}}
{{> maps}} // tested this template individually, it works too.
{{/if}}
</template>
<template name="menu">
<h1>Bank Innovation Map</h1>
<input type="button" value="Add new Place">
</template>
My js code:
Template.body.isTrue = true;
Template.menu.events({
'click input': function(){
//load a new template
console.log("You pressed the addNewplace button");//this fn is called properly
Template.body.isTrue = true;
}
});
Well first of all you obviously aren't changing anything in the click event (true before, true after). But also if you did, I think you might be better off using a session variable for this, to maintain reactivity.
Session.setDefault('showAddNewPlace', false)
Template.body.isTrue = function() { Session.get('showAddNewPlace'); }
Template.menu.events({
'click input': function(){
//load a new template
console.log("You pressed the addNewplace button");//this fn is called properly
Session.set('showAddNewPlace', true)
}
});
Meteor 0.8.2 comes in with the dynamic template include feature. Just set a session variable value on click event and you would like to use the template name on the event.
Session.setDefault('myTemplate', 'DefaultTemplateName');
"click input": function (event) {
Session.set("myTemplate", 'template_name');
}
You can now write this:
<body>
{{> menu}}
{{> body}}
</body>
<template name="body">
{{> UI.dynamic template=myTemplate}}
</template>
<template name="menu">
<h1>Bank Innovation Map</h1>
<input type="button" value="Add new Place">
</template>
You may like to take a look at this article for the reference:
https://www.discovermeteor.com/blog/blaze-dynamic-template-includes/

Sending data into a nested Controller/View in EmberJS

I'm messing around with JSON structures in EmberJS starting from the top level Application level and trying to pass data to a general MenuController/MenuView child so I can reuse it.
The JSON I've come up with to play around with how data gets passed through nested ember structures is this:
JSON
{
appName: "CheesyPuffs"
menuItems: [
{name:"Gouda"}
{name:"Crackers", menuItems: [
{name: "Cheezeits"}
]
}
]
}
Handlebars
<script type="text/x-handlebars">
<div class='app'>
<div class='header'>
{{#if menuItems}}
// Embed template 'menu'
{{/if}}
</div>
</div>
</script>
<script type="text/x-handlebars" data-template-name="menu">
<ul>
{{#each menuItems}}
<li>{{name}}</li>
{{#if menuItems}}
// Embed menu template
{{/if}}
{{/each}}
</ul>
</script>
JS
App.MenuController = Ember.ArrayController.extend({
actions: {
click: function(){
// Signal Event to App
}
}
});
App.MenuView = Ember.View.extend({
click: function(){
console.log("I clicked a menu");
}
});
All the examples I've seen concerning nested stuff involves routes with the classic _id subroute. I'm not sure how I would go about telling the App Router that it needs to pass the menuItems data to a child controller that's embedded in the same view. I have a feeling you can do this both via the template and programmically? If so, how would you do it both ways?
using the template you should use render. And that's the way you should do it, programmatically doesn't make sense.
<script type="text/x-handlebars">
<div class='app'>
<div class='header'>
{{#if menuItems}}
{{render 'menu' menuItems}}
{{/if}}
</div>
</div>
</script>
<script type="text/x-handlebars" data-template-name="menu">
<ul>
{{#each menuItems}}
<li>{{name}}</li>
{{#if menuItems}}
{{render 'menu' menuItems}}
{{/if}}
{{/each}}
</ul>
</script>

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