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
Related
Just started using Meteor so I might be missing something basic. In Meteor 1.2 they have the {{#index}} directive.
In a template if I have:
...
{{#each items}}
{{#index}}
{{> childTemplate}}
{{/each}}
...
<template name="childTemplate">
{{#index}}
</template>
The #index in the main template will work, but the one in the childTemplate won't. The work around I've done to use it is to call the childTemplate passing in #index:
{{> childTemplate #index=#index}}
Is this the correct way to do it? Or is there something more meteory?
Yes, that's fine
There's a similar question I answered here :-
How to get the #index of nested #each in meteor
But in this case passing it in is good.
Meteor has "../var" to get to the parent context, but that is the template context, not the each block, so I don't think there is a more meteory way
I have several instances of sergeyt:typeahead working in my webapp. However today I am building a table out of data from query. One of the columns needs to allow for possibly selecting from a collection or if the user wants to enter their own value.
This has worked for me in other parts. Now it appears that when using an {{#each}} statement in the html and when the typeahead is inside the {{#each}} that it does not receive the injecting.
I believe this may be due to the fact that inject is typically done on the rendered which is run before the {{#each}} has run and created the dom elements. And if that is the case how would I go about then placing the inject on these newly generated elements?
You should be able to create a sub template for each stop:
<template name='myApp'>
{{#each stops}}
{{> stop}}
{{/each}}
</template>
<template name="stop">
<input class="form-control typeahead" ...>
</template>
This way you can call typeahead.inject on each instance after it is rendered.
Template.stop.onRendered(function() {
Meteor.typeahead.inject();
});
<template name="orderForm">
{{> photographyServicesForm}}
{{> videographyServicesForm}}
{{> onlineProductsForm}}
</template>
If I go to the orderForm page is there a way to get the data inside of the orderForm Blaze template instance when I'm in Chrome Console? I know how to get it inside the orderForm callbacks, events, helpers, and inside the HTML, but I want to be able to easily check up on it and even update it from the Chrome Console.
I also know that there are four different template instances when I go to this orderForm. Obviously Template.orderForm doesn't work because it's not the current template instance.
EDIT
Here's the answer:
<template name="orderForm">
<div id="orderForm">
{{> photographyServicesForm}}
{{> videographyServicesForm}}
{{> onlineProductsForm}}
</div>
</template>
Blaze.getData($('#orderForm')[0])
It should be noted that the same data available on the orderForm template is also available to its child templates - photographyServicesForm, videographyServicesForm, onlineProductsForm
You want to check out Blaze.getData and Blaze.getView.
With Blaze.getData you can simply do this:
Blaze.getData(document.querySelector('.someelement'))
This works pretty well, but you have to have an element inside the template-instance you can query for.
I am using Meteor 0.5.2 and trying to solve what seems to me is an obvious pattern that should have an easy solution.
I have a template that should return different chunk of data in each of template instances.
For example - I have a template showing TV program - show by show.
Then I need to display two instances of the same template with different data - one with past shows and one with upcoming shows.
So I have a tv program template:
<template name="tv_program">
{{#each shows}}
...
</template>
Ideally I would like do something like:
{{> tv_program past_shows}}
...
{{> tv_program upcoming_shows}}
to pass a parameter to tv_program template instance that I can read from JavaScript and adjust the mongo queries.
Currently I have copy/pasted my template/js code and adjusted the mongo queries but there has to be a better way.
I looked into partials/helpers with arguments but that doesn't seem to be the solution to my problem.
Thanks, Vladimir
You're approaching the problem at the wrong level. Rather than trying to tell your code what to do from your templates, you should tell your template what to do from your code. For instance:
Template.past_shows.shows = function() { return shows(-1); }
Template.upcoming_shows.shows = function() { return shows(1); }
function shows(order) {
return Shows.find({}, {$sort: order});
}
<template name="past_shows">
{{#each shows}}
{{> show}}
{{/each}}
</template>
<template name="upcoming_shows">
{{#each shows}}
{{> show}}
{{/each}}
</template>
<template name="show">
<li>{{_id}}: {{name}}</li>
</template>
If you are using a state machine for your app, such as meteor-router, you can use one template and populate it with upcoming or past shows depending on app state.
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;
{{{.}}}