method
dom_id
v3.2.13 -
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Class: ActionController::RecordIdentifier
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dom_id(record, prefix = nil)
public
The DOM id convention is to use the singular form of an object or class with the id following an underscore. If no id is found, prefix with “new_” instead. Examples:
dom_id(Post.find(45)) # => "post_45" dom_id(Post.new) # => "new_post"
If you need to address multiple instances of the same class in the same view, you can prefix the dom_id:
dom_id(Post.find(45), :edit) # => "edit_post_45"