So I want to render a template that will hold an image when the value of the score in my Players collection equals 500, it right now doesn't render at all even when a player score equals 500, do I need an if statement in my handlebars or something else?
Relevant code I made so far
client
foo.html
<body>
<div class="container">
{{> header}}
<div class="row-fluid">
<div class="span8">
{{> leaderboard}}
</div>
<div class="span4">
{{> champion}}
</div>
</div>
</div>
</body>
<template name="champion">
{{#each winners}}
{{> winner}}
{{/each}}
</template>
<template name="winner">
<img src="gold.jpg" alt="winner">
</template>
foo.js
Template.champion.winners = function () {
return Players.find({score: 500});
};
You marked the Template code as being on the server in your question, but the code with Template.winner.winners should be on the client, not the server. This is most likely the problem. Also, you have two templates named winner, although Meteor should throw an error on the command line if you have duplicate template names.
Finally, this isn't what you asked, but it may come handy for debugging too. You can detect whether the cursor is empty in your templates using Handlebars {{else}}:
{{#each winners}}
{{> winner}}
{{else}}
no winners!
{{/each}}
Related
From the Meteor templates tutorial here: (https://www.meteor.com/tutorials/blaze/templates)
We see that we can call a template {{> task}} inside the loop over tasks. However, when I try to get the task template in its own file - it no longer has access to the data. What is the correct way to do this?
<body>
<div class="container">
<header>
<h1>Todo List</h1>
</header>
<ul>
{{#each tasks}}
{{> task}}
{{/each}}
</ul>
</div>
</body>
<template name="task">
<li>{{text}}</li>
</template>
Figured it out. Basically, I was importing the task.html in the main.js, but not the accompanying task.js. So all the conditional helpers I had were not loaded and hence not working.
We need to pass value to the template which we are calling. And I assume tasks helper is implemented. Here I'm passing current value using 'this'.
<body>
<div class="container">
<header>
<h1>Todo List</h1>
</header>
<ul>
{{#each tasks}}
{{> task this}}
{{/each}}
</ul>
</div>
</body>
<template name="task">
<li>{{this}}</li>
</template>
I'd like to access a parameter template while I'm on a {{#each}} already. Something like:
<template name="overview">
{{> userList users=users level=0}}
</template>
<template name="userList">
{{#each users}}
<div class="level{{../something}}">
<!-- not working, how can i access {{something}} here ? -->
{{>userList users=users level=subLevel}}
{{name}}
{{/each}}
</template>
Template.userList.helpers({
subLevel: function() {
return this + 1;
}
});
but it's not working, do you have any idea ?
Technically, I'm calling recursively a template, and I'd like to know at what level my template is.
I'm not sure what you're trying to do but this doesn't look right. A template calling itself leads to an infinite loop. For example, create a new meteor project and try to call {{> hello}} inside "hello" template. It doesn't work.
<head>
<title>test</title>
</head>
<body>
<h1>Welcome to Meteor!</h1>
{{> hello}}
</body>
<template name="hello">
<button>Click Me</button>
<p>You've pressed the button {{counter}} times.</p>
{{> hello}}
</template>
There must be another way to do what you're trying to do...
<template name="overview">
{{> userList users=users level=0}}
</template>
<template name="userList">
{{#each users}}
<div class=level>
{{>userList users=users level=subLevel}}
{{name}}
{{/each}}
</template>
Because you have enclosed level variable in double quotes that will not be evaluated.
Ok, I finally found that the best way to achieve that was to add a level key in my array of users instead of passing it with a parameter. Spacebars seems to no be able to achieve what I wanted initially.
when I generate subtemplate in #each helper and i add parameter, then i lose data context, what is normally visible.
I found workaround by passing data fields to template by
{{> productItem parameter="test" name=name details=details}}
, but for more complicated collections that would be very tiresome... isn't there better option to solve that problem ?
<template name="main">
{{#each products}}
{{> productItem parameter="test"}}
{{/each}}
</template>
<template name="productItem">
<div class="product">
<p>{{name}}</p>
<p>{{details}}</p>
<p>{{parameter}}</p>
</div>
</template>
And javascript :
Template.main.helpers({
products: function(){
return Products.find({});
}
});
you are creating a new context ( it doesn't magically merge everything ), but its easy enough to include the original context.
you go :-
{{> productItem product=this parameter="test"}}
then
<template name="productItem">
<div class="product">
<p>{{product.name}}</p>
<p>{{product.details}}</p>
<p>{{parameter}}</p>
</div>
</template>
or
<template name="productItem">
<div class="product">
{{#with product}}
<p>{{name}}</p>
<p>{{details}}</p>
{{/with}}
<p>{{parameter}}</p>
</div>
</template>
I have been working with meteor.js and have been practicing using examples from getting started with meteor.js Javascript framework. The book is 2 years old and I have been running across some snags. For instance the book tells you to use var to define a variable, but after searching on stack I read that you didn't have to use it and now it works. I'm new so I write programs, run them, debug them and start from scratch to help me learn. For some reason this program that I have done 4 times before today is not running and I cant figure out why.
I keep getting this message :
While building the application:
LendLib.html:37: Expected "template" end tag
...  </div>
after inputting the following code:
<head>
<title>LendLib</title>
</head>
<body>
{{> hello}}
<div id="categories-container">
{{> categories}}
</div>
</body>
<template name="hello">
<h1>Lending Library</h1>{{greeting}}
<input type="button" value="Click" />
<template name="categories">
<div class="title">my stuff</div>
<div id="categories">{{#each lists}}
<div class="category">{{Category}}</div>{{/each}} </div>
</template>
</template>
any advice will be appreciated
dont define templates inside another template.
try like this.
<template name="hello">
<h1>Lending Library</h1>
{{greeting}}
<input type="button" value="Click" />
</template>
<template name="categories">
<div class="title">my stuff</div>
<div id="categories">
{{#each lists}}
<div class="category">
{{Category}}
</div>
{{/each}} 
</div>
</template>
Like pahan said, you cannot define a template within another template. They each have to be separate and un-nested. You CAN, however, call a template from within another template.
<template name="myOtherTemplate">
<h1> Lalalala </h1>
</template>
<template name="myTemplate">
{{> myOtherTemplate}} //injects the contents of myOtherTemplate
</template>
On another note, you also cannot nest Template instances within other Template instances.
Say that you want to register a helper function only after a certain template has been rendered.
Template.myTemplate.rendered = function({
Template.myTemplate.helpers({
key: "value",
anotherKey: "anotherValue"
});
});
^^ This also won't work.
I have three simple Templates in Meteor, and a Collection on the server with any combination of their names. I want to be able to render these templates dynamically based on which of their names are in the Collection.
Currently I am trying to accomplish this by using the client to subscribe to the Collection, and access the names through a template function. Unfortunately, if I try to run ">" on the names, Meteor attempts to render the variable name instead of the Template pointed to by its value.
So instead of rendering the html in template1, template2, and template3, the output is merely their names on the page: "template1 template2 template3".
Here is the code I've been using, I hope there's a way to solve my issue without having to run Meteor.render manually.
Server js:
TemplatesToRender = new Meteor.Collection("templatesToRender");
TemplatesToRender.insert({templateName: "template3"});
TemplatesToRender.insert({templateName: "template2"});
Client html:
<body>
{{#each templatesToRender}}
{{> templateName}} // meteor trying to render a template
// called "templateName" instead of the
// variable inside templateName.
{{/each}}
</body>
<template name="template1">
<span>Template 1</span>
</template>
<template name="template2">
<span>Template 2</span>
</template>
<template name="template3">
<span>Template 3</span>
</template>
You can make a render helper:
Handlebars.registerHelper('render', function(name, options) {
if (Template[name])
return new Handlebars.SafeString(Template[name]());
});
And use it with
{{render templateName}}
You might want to try this
in your html
<body>
{{> templateToRender}}
</body>
<template name="templateToRender">
{{! use below to detect which template to render}}
{{#if templateName "template1"}}
{{> template1}}
{{/if}}
{{#if templateName "template2"}}
{{> template3}}
{{/if}}
{{#if templateName "template3"}}
{{> template3}}
{{/if}}
</template
<template name="template1">
<p>this is template1</p>
</template>
<template name="template2">
<p>this is template2</p>
</template>
<template name="template3">
<p>this is template3</p>
</template>
in your script
Template.templateToRender.templateName = (which) ->
# if user have a field like templateName you can do things like
tmplName = Meteor.user().templateName
# Session.equals will cause a template render if condition is true.
Session.equals which, tmplName
Meteor 1.0 just came out today, and I just want to update this for 2014 :)
https://docs.meteor.com/#/full/template_dynamic
{{> Template.dynamic template=template [data=data] }}
Sample Usage:
{{#each kitten}}
{{> Template.dynamic template=kitten_type data=this }}
{{/each}}