meteor - Structuring session variables to minimize template rerendering -

i developing first meteor project, , code basis growing, unsure using session variables/ reactive programming approach correctly. example, let's have @ form editing blog article. before editing, use session.set("current_article", articles.findone(id)) set current article. when opening article form, populated correctly using <input type="text" name="title" value="{{article.title}}">.

but form more complicated displaying title:

e.g. when title or tag changes, text on right right (a generated tweet message) updates while typing. achieve this, register keyup listener sets session.set("current_article", $.extend(session.get("current_article"), {tweet: somemagictweetgeneration()})). might notice way using session variables causes rerendering whole template.

so question is: makes sense storing more complex objects (like articles) session variable? way saving form quite straightforward, causes other issues. should split session.get("current_article") session.get("current_article.title"), session.get("current_article.tweet"), ...? other best practices?

you use {{#isolate}}..{{/isolate}} blocks bits of template re-rendered , not entire thing, e.g with:

{{#isolate}}     <input type="text" name="title" value="{{article.title}}"> {{/isolate}} 

so when change article.title bits inside isolate block changed, , surrounding untouched.

you have re-render bits of dom change, idea re-render bits need redrawn.

as session variables, try storing them in manner if send out variable dom, avoid sending 1 large object , instead send pieces required template.

e.g in above might have many things used in {{article}}, use {{article.title}} in bit of code, might better use template. if know you're going use of them might use nested objects.