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Editorial Team
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Asked: 2026-06-02T21:36:35+00:00

tried to create simple dropdown in ruby with values from the database – like

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tried to create simple dropdown in ruby with values from the database – like that : 

<% ingredientArray = Ingredient.all.map { |ingredient| [ingredient.name, ingredient.id] } %>
<div class="field">
  <%= select_tag(:ingredient_id, ingredientArray) %><br/>
</div>

and I received an empy one.
this is the generated html

<div class="field">
   <select id="ingredient_id" name="ingredient_id">[[&quot;Paprika&quot;, 5], [&quot;Cinnamon&quot;, 8], [&quot;Salt&quot;, 9], [&quot;Pepper&quot;, 10], [&quot;water&quot;, 11]]</select><br/>
</div>

where should I put html sage

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1 Answer

  1. Editorial Team

    You should read documentation on select_tag and related methods.
    The second parameter of it is a string containing the option tags for the select box.
    You can generate in manually:

    select_tag "people", "<option>David</option>".html_safe

    Or use options_from_collection_for_select method for it:

    select_tag "people", options_from_collection_for_select(@people, "id", "name")

    (Examples from the docs)

    Specifically in your case the best way to make that dropdown is:

    <div class="field">
    <%= select_tag("Ingredients", options_from_collection_for_select(Ingredient.all, 'id', 'name')) %>
</div>
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