Is there a variable passed into every handlebar.js template that contains all the context content that is accessible by the template?
e.g. I'm creating a template, but I don't know all the context content accessible by the template. I want to be able to type into the template {{ debug }} and handlebars.js will spit out all the context content into the HTML
You can use the following code to iterate through this object:
{{#each this}}
{{#key}}: {{this}}
{{/each}}
or a similar piece of code iterating through #root object:
{{#each #root}}
{{#key}}: {{this}}
{{/each}}
Handlebars has built-in helper log.
You just need to set logging level to DEBUG.
Handlebars.logger.level = 0;
Then use helper:
{{log this}}
EDIT: Sorry, this will not write context to HTML, helper uses console.log. For outputting to HTML you need to write custom helper that will use for example JSON.stringify.
Though this question is somewhat old, someone might find this usefull. You can just dump the handlebars current context into plain text with;
{{{.}}}
Related
When there is a link present, we want something like this HTML:
<img src="{{src}}"></img>
When there is no link present, we want something like this HTML:
<img src="{{src}}"></img>
Is there a clean way to do this? I consider the following solution bad, because it's dangerous to have to separately remember to open and close the <a> tag:
{{#if url}}<a href="{{url}}" title="{{title}}" target="_blank">{{/if}}
<img src="{{src}}">
{{#if url}}</a>{{/if}}
I considered using a block helper, but can't think of how to do so without adding more complexity. Maybe something like:
{{#linkWrap url}}<img src="{{src}}">{{/linkWrap}}
But then it's hard to see how we set the title and target and everything gets awkward.
I think you are on the right track, but I would recommend using a Handlebars Partial Block instead of a Block Helper. This will allow to pass one piece of template (the block) to another piece of template by which it will be wrapped (the partial).
Handlebars provides us with {{> #partial-block }} as a way to render a block of template within a partial. We can use this to create our "linkWrap" partial:
{{#if link}}
<a href="{{link.url}}" target="{{link.target}}" title="{{link.title}}">
{{> #partial-block}}
</a>
{{else}}
{{> #partial-block}}
{{/if}}
This gives us a clean and simple partial that will allow us to wrap any section of our template with a link as long as we have a link object to pass to our partial. Note that I have opted to use an object to represent the link so that I can pass a single parameter to the partial instead of passing the url, title, etc. properties individually.
For anywhere we wish to render a link around some markup in our template, we can do so in the following way:
{{#> linkWrap link=link}}
<img src="{{image.src}}">
{{/linkWrap}}
If the link object is null or undefined, the img element will be rendered without a parent anchor element.
I have created a supplementary fiddle for reference.
I have a template and I would like to pass an additional variable with it's data context:
<template name="list">
{{#each item}}
{{> listItem extraVariable=someValue}}
{{/each}}
</template>
<template name="listItem">
{{extraVariable}}
</template>
I seem to lose the original datacontext (this from the each block) if I do it like in the above snippet. How can I keep the original and still pass the extra information (I do not want to use session variables)
Meteor 1.2 and above:
{{#let x=y}}
let block helper lets you set a new variable without overriding the data context inside the block
More info: https://quip.com/RXFlAk9Rc2xI
I am new to Meteor and got stuck here.
<h1>{{otherObj.category}}</h1>
{{#each partners}}
<p>{{name}} - {{otherObj.category}}</p>
{{/each}}
In this template snippet, otherObj is the object that i want to access in the loop. So this outputs
<h1>football</h1>
<p>Name1 - </p>
<p>Name2 - </p>
Further investigation revealed that OtherObj inside the loop is 'undefined'
Any idea, how can i access it inside the loop ?
You need access to parent properties of each loop.
Use ../ like this :
<h1>{{otherObj.category}}</h1>
{{#each partners}}
<p>{{name}} - {{../otherObj.category}}</p>
{{/each}}
I'm new to Handlebars and I wanted to know if I can use block helper inside a block helper, something like this:
{{#each person}}
{{each family_member}}{{family_relation}}
{{/family_member}}
{{/person}}
I've tried to do it with a simple helpers in http://tryhandlebarsjs.com
and it didn't work, but I couldn't find any place saying if it can work or not....
any help?
Thanks
You can use block helpers inside block helpers. Provided they are used the correct way.
{{#each person}}
{{#each family_member}}
{{family_relation}}
{{/each}}
{{/each}}
You can actually see a plunkr here : http://plnkr.co/edit/H9XlaQG99etHb4Fwx9pp?p=preview
I'm trying to pass an array to another template in Meteor.
Why? Because I would like to create a small template for each Bootstrap element, allowing me to reuse components much more easily.
{{> dropdown id="dropdown1" textDropdown="My dropdown!" listItems=["item1", "item2"] }}
This does not seem to work unfortunately.
Any clue? Does what I'm doing even make sense? I'm new to Meteor.
Thanks!
Spacebars is currently pretty limited in what it can accept - you'll need to add a helper to accomplish this:
Template.myTemplate.helpers({
listItems: ['item1', 'item2']
});
And them modify your template:
{{> dropdown id="dropdown1" textDropdown="My dropdown!" listItems="{{listItems}}"}}
Make sure to update myTemplate to the parent template's name.