Hoping someone can suggest a fix here. I am fairly new to Rails, and exploring the changes in Rails 4.0. I built this simple recipe book app in Rails 4.0. I have a main model for recipes (name, cook_time, oven_temp, instructions, etc.). Because some recipes may have 5 ingredients and others may have 20, I wanted to break ingredients out in a separate model with a has_many association. So Recipes has_many Ingredients and accepts_nested_attributes_for :ingredients. Here are the models:
recipe.rb
class Recipe < ActiveRecord::Base
belongs_to :user
belongs_to :category
has_many :ingredients, :dependent => :destroy
validates :name, presence: true, length: { maximum: 50 }
accepts_nested_attributes_for :ingredients,
:reject_if => lambda { |a| a[:name].blank? },
:allow_destroy => true
end
ingredient.rb
class Ingredient < ActiveRecord::Base
belongs_to :recipe
end
Reminder: Rails 4.0 no longer uses attr_accessible, but moves assignment into the controller with strong params.
recipes_controller.rb
class RecipesController < ApplicationController
before_action :find_recipe, only: [:show, :edit, :update, :destroy]
before_action :set_current_user, except: [:index, :show]
respond_to :html, :js
...
def edit
end
def update
if @recipe.update_attributes(recipe_params)
redirect_to @recipe
else
render :edit
end
end
...
def find_recipe
@recipe = Recipe.find(params[:id])
end
private
def recipe_params
params.require(:recipe).permit( :id, :name, :category_id, :cook_time, :oven_temp, :calories, :instructions, :notes, :email, ingredients_attributes: [:id, :name])
end
end
I'm using the excellent Cocoon gem from nathanvda to manage nested form fields dynamically, and it works great in 'recipes#new', and saves the information correctly. However, the ingredients fields do not appear in the 'recipes#edit' view! Here is the code for my 'form' and ingredients_fields partials.
_form.html.erb (abbreviated)
<%= form_for @recipe, html: { class: 'form-horizontal' } do |f| %>
<fieldset>
<legend>Main Information</legend>
<div class="field form-group">
<%= f.label :name, "Recipe name", class: "col-lg-2 control-label" %>
<div class="col-lg-5">
<%= f.text_field :name, class: "form-control" %>
</div>
</div>
<div class="field form-group">
<%= f.label :cook_time, class: "col-lg-2 control-label" %>
<div class="col-lg-5">
<%= f.text_field :cook_time, class: "form-control" %>
</div>
</div>
...
</fieldset>
<legend>Ingredients</legend>
<p>Number of ingredients: <%= f.object.ingredients.count unless f.object.ingredients.nil? %></p>
<fieldset id="ingredients">
<% f.fields_for :ingredients do |builder| %>
<%= render 'ingredient_fields', :f => builder %>
<% end %>
<p class="links">
<%= link_to_add_association 'add ingredient', f, :ingredients, { class:"btn btn-primary" } %>
</p>
</fieldset>
<fieldset>
<legend>How to make it</legend>
<div class="field form-group">
<%= f.label :instructions, class: "col-lg-2 control-label" %>
<div class="col-lg-5">
<%= f.text_area :instructions, class: "form-control", rows: "7" %>
</div>
</div>
...
</div>
</fieldset>
<% end %>
_ingredients_fields.html.erb
<div class="nested-fields">
<div class="form-group">
<%= f.label :name, "Ingredient", class: "col-lg-2 control-label" %>
<div class="col-lg-5">
<%= f.text_field :name, class: "form-control" %>
</div>
<%= link_to_remove_association "remove", f %>
</div>
</div>
As I said, pretty simple, removed all error checking and messaging, just the basics. Any ideas about what I am missing? I know there are ingredients in the recipe as I load edit from a show view. Thanks in advance for any advice!
Kevin
