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Extract partial

Last modified: 09 August 2022

Refactor | Extract/Introduce | Partial

The Extract Partial refactoring allows you to remove duplication in a view by extracting its fragment to a partial view. You can apply this refactoring to .html.erb and .html.haml files.

To extract a view fragment to a partial view, do the following:

Example

Before

<!--'new.html.erb' file-->
<h1>New article</h1>
<%= form_with scope: :article, local: true do |form| %>
<p>
    <%= form.label :title %><br>
    <%= form.text_field :title %>
</p>
<p>
    <%= form.label :text %><br>
    <%= form.text_area :text %>
</p>
<p>
    <%= form.submit %>
</p>
<% end %>
<%= link_to 'Back', articles_path %>

After

<!--'new.html.erb' file-->
<h1>New article</h1>
<%= render 'form' %>
<%= link_to 'Back', articles_path %>
<!---->
<!--'_form.html.erb' file-->
<%= form_with scope: :article, local: true do |form| %>
<p>
    <%= form.label :title %><br>
    <%= form.text_field :title %>
</p>
<p>
    <%= form.label :text %><br>
    <%= form.text_area :text %>
</p>
<p>
    <%= form.submit %>
</p>
<% end %>

See also

Procedures