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RoR - Snippet for Join Table Checkboxes

/ Published in: Rails
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Used to create checkboxes to select multiple categories for a post or any other type of applicable situation.

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Copy this code and paste it in your HTML 
  1. <% for category in Category.find(:all) %>
  2.   <%= check_box_tag "post[category_ids][]", category.id, @post.categories.include?(category) %>
  3.   <%= category.name %><br />
  4. <% end %>

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