optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?

Question

I\'ve been a bad kid and used the following syntax in my partial templates to set default values for local variables if a value wasn\'t explicitly defined in the :locals has

Answer 1

Ruby 2.5

Erb

It's possible, but you must to declare your default values in the scope.

VARIABLE the word for replacement.

# index.html.erb
...
<%= render 'some_content', VARIABLE: false %>
...

# _some_content.html.erb
...
<% VARIABLE = true if local_assigns[:VARIABLE].nil? %>
<% if VARIABLE %>
    
Do you see me?
<% end %>
...