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POcocoon :has_many :through relationship - create new - not just "add existing"
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  1. POcocoon :has_many :through relationship - create new - not just "add existing"
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    copied!<p>I am working on a recipe application where a recipe has a title, description, instructions and ingredients with quantities</p> <p>I'm having a recipe model, a quantity model and an ingredient model:</p> <pre><code>class Recipe &lt; ActiveRecord::Base attr_accessible :description, :instructions, :title, :quantities_attributes, :ingredients_attributes has_many :quantities has_many :ingredients, :through =&gt; :quantities accepts_nested_attributes_for :quantities, :reject_if =&gt; :all_blank, :allow_destroy =&gt; true accepts_nested_attributes_for :ingredients end class Quantity &lt; ActiveRecord::Base attr_accessible :amount, :ingredient_id, :ingredient_attributes belongs_to :recipe belongs_to :ingredient accepts_nested_attributes_for :ingredient, :reject_if =&gt; :all_blank end class Ingredient &lt; ActiveRecord::Base attr_accessible :name, :ingredient_id has_many :quantities has_many :recipes, through: :quantities end </code></pre> <p>I am using cocoon with simple form to create a nested-model-form, here's what I have so far:</p> <p>recipes/_form.html.haml</p> <pre><code>= f.simple_fields_for :quantities do |q| = render 'quantity_fields', :f =&gt; q = link_to_add_association 'add ingredient', f, :quantities = f.submit </code></pre> <p>recipes/_quantity_fields.html.haml</p> <pre><code> = f.input :amount = f.association :ingredient, :collection =&gt; Ingredient.all(:order =&gt; 'name'), :prompt =&gt; 'Choose an existing ingredient' = link_to_remove_association "remove ingredient", f </code></pre> <p>recipes/_ingredient_fields.html.haml</p> <pre><code>= f.input :name, :hint =&gt; 'New Ingredient' </code></pre> <p>here's what I get when adding a new ingredient to my recipe: <a href="https://www.evernote.com/shard/s1/sh/3790e23d-5699-4683-8404-120515affba1/858deb9a56112d179c37d39e61ba0f6d" rel="nofollow">https://www.evernote.com/shard/s1/sh/3790e23d-5699-4683-8404-120515affba1/858deb9a56112d179c37d39e61ba0f6d</a></p> <p>Now I'm wondering how I could add a completely new ingredient which hasn't been added before - do you have any ideas?</p>
 

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