Flowdock
method

field_id

Importance_2
v7.0.0 - Show latest stable - 0 notes - Class: ActionView::Helpers::FormTagHelper
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field_id(object_name, method_name, *suffixes, index: nil, namespace: nil) public

Generate an HTML id attribute value for the given name and field combination

Return the value generated by the FormBuilder for the given attribute name.

<%= label_tag :post, :title %>
<%= text_field_tag :post, :title, aria: { describedby: field_id(:post, :title, :error) } %>
<%= tag.span("is blank", id: field_id(:post, :title, :error) %>

In the example above, the <input type="text"> element built by the call to text_field_tag declares an aria-describedby attribute referencing the <span> element, sharing a common id root (post_title, in this case).

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