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Following code:
<%= render 'shared/error_messages', f.object %>
where f.object is instance of a class called ‘User’.
in an erb file is raising an error about not finding method ‘keys’ in the User object.
What’s going on?
The second parameter to render, locals is a map that specifies the variables that would be available in the partial that will be rendered. Api Doc:
http://apidock.com/rails/ActionView/Template/render
Here, we are passing a User instance instead of the map Rails is expecting. When executing the code to render the partial, Rails is trying to use the User object as a map, hence the error about not finding the method ‘keys’.
What I really needed was this –
where object is a variable the _error_messages.html.erb partial is expecting. This resolved the error.