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About how views should receive variables

In a world of best practices, when do you allow a view to inherit controller instance variables and when you explicitly pass them to locals hashes?

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2 answers

Any instance variables that you define in your controller are automatically propagated to the view, so there is no need to pass them explicitly. This works not only for your initial presentation, but for any partial processing in the process.

You want to send variables :localswhen you call the same partial, but you need to visualize different things that cannot be placed with :objector :collection.

:

# Bad form
<%- @foo = 'example1' %>
<%= render(:partial => 'bar') %>
<%- @foo = 'example2' %>
<%= render(:partial => 'bar') %>

:

<%= render(:partial => 'bar', :locals => { :foo => 'example1' }) %>
<%= render(:partial => 'bar', :locals => { :foo => 'example2' }) %>

, foo @foo. , undefined, , , .

+5

.

contoller,

#your_controller
@name = "Pedro"

#your view
Hello, <%= @name %>!
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