Is it possible to create a template with a dynamic loading image?
template
<template name="example">
<img src="{{src}}">
</template>
helper
Template.example.helpers({
src: function() {
return Collection.findOne({}, { sort: { timestamp: -1 }}).url;
}
});
As you can see the src-url is stored in a collection document and I always choose the newest document of the collection.
But if I insert a new document in that collection nothing happens until I do a reload of the page.
MongoDb cursors are reactive not the data itself. In your helper you are basically fetching
one document from the database using findOne()
. findOne()
get one document and closes the cursor. You can try find()
with limit
and show it in the dom using #each
property of Blaze.
Collection.find({}, {limit:1 , sort: { timestamp: -1 }});
{{#each src }}
<img src="{{src.url}}">
{{/each}}
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