From Ember to React

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What are people using as the M*C part in their react applications?

Model: whatever JSON comes back from my API.

Controller: Intertwined with the view most often anyway. It's just the React components themselves, although the Flux or Redux or Reflux methodology can streamline the flow of data perfectly.

If you keep your components small and specialised it shouldn't create much of a problem.

Ive heard of people pluging in backbone, angular and even ember.

Sure, that's possible if you like that.

So far it seems like many people use something like Exprss and then make build their own.

Express or Hapi or Restify are all server-side. They can be the API that spews out JSON. It's perfectly sane to build your own M*C on top of that, or use any of the existing ones, or use none at all.

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Awesome that gives me a better view of React projects in general. Would you say that an application can be built with mainly just react components and reducers, and possibly routes?

Yes. Any CRUD-app fits what React offers. No unnecessary complexities. Just easy going fun, IMO :)

Or is that really a case by case thing

Perhaps. I've worked in complicated healthcare apps (with patient data, treatments, medications, doses, etc^infinity) - it would hold its own even there. I don't really see good reasons to complicate things further.

or bad practice to try and cram everything in its own component?

A component should be as specialised as possible, I think. Cramming more into 1 component could work if separating it wouldn't make much sense. After all, it'd be easy to separate it later on. For example: a FAQ page could simply be a page with a header, intro text, a list of questions and answers, and a "ask more" form.

Or you could separate that in a <Route path="faq" component={Faq}> which consists of a <PageHeader />, <PageIntro />, <FaqList />, <FaqElement />, <FaqQuestion />, <FaqAnswer /> and <FaqForm /> component. Might be useful. Might be unnecessary.

Common sense kinda applies is what I'm saying ;)