Rails 4嵌套属性,其中simple_fields_for一个保存,一个不保存到数据库

时间:2016-02-13 09:38:22

标签: ruby-on-rails-4 nested-forms cocoon-gem

研究:[Rails 4嵌套属性,其中fields_for不保存到数据库] [Rails 4 - 使用Cocoon gem的嵌套属性] 1 [Rails 4.1嵌套属性和字段,用于获取未允许的参数但不保存] { {3}}

我的具体问题是:

我有两种嵌套形式:成分和方向

成分保存,但方向不保存。它不会引发错误,日志也不知道是否存在问题。

首先,让我们解决最常见的问题:强参数的错误命名属性参数。我是正确的复数。

class RecipesController < ApplicationController
def recipe_params
        params.require(:recipe).permit(:title, :image, directions_attributes: [:id, :name, :_destroy], ingredients_attributes: [:id, :name, :_destroy])
    end

我的模型也正确设置

class Recipe < ActiveRecord::Base
    has_many :ingredients
    has_many :directions
    belongs_to :user
    accepts_nested_attributes_for :ingredients, reject_if: :all_blank, allow_destroy: true
    accepts_nested_attributes_for :directions, reject_if: :all_blank, allow_destroy: true
    validates :title, presence: true
    mount_uploader :image, ImageUploader
end

#_form.html.haml
= simple_form_for @recipe, html: { multipart: true } do |f|
    - if @recipe.errors.any?
        #errors
            %p
                = @recipe.error.count
                Prevented this recipe from saving
            %ul
                %li= msg
    .panel-body
        = f.input :title, label: "Name", input_html: { class: 'form-control' }
        = f.input :image, label: "Picture",input_html: { class: 'form-control' }
        .row
            .col-md-6
                %h3 Ingredients
                #ingredients
                    = f.simple_fields_for :ingredients do |ingredient|
                        = render 'ingredient_fields', f: ingredient
                    .links
                        = link_to_add_association 'Add Ingredient', f, :ingredients, class: "btn btn-default add-button"

            .col-md-6
                %h3 Directions
                #directions
                    = f.simple_fields_for :directions do |direction|
                        = render 'direction_fields', f: direction
                    .links
                        = link_to_add_association 'Add Step', f, :directions, class: "btn btn-default add-button"

    = f.button :submit, class: "btn btn-primary"

以下是我对成分和方向的偏爱

_ingredient_fields.html.haml
.form-inline.clearfix
    .nested-fields
        = f.input :name, input_html: { class: "form-input form-control"}
        = link_to_remove_association 'Remove', f, class: "form-button btn btn-default"

_direction_fields.html.haml
.form-inline.clearfix
    .nested-fields
        = f.input :name, input_html: { class: "form-input form-control"}
        = link_to_remove_association 'Remove', f, class: "form-button btn btn-default"

好的,这是有趣的事情,我的应用程序不会抛出任何错误。名称,图像和成分保存,但方向不。

这是日志

在2016-02-12 19:00:07 -0800为:: 1开始POST“/ recipes” RecipesController处理#create as HTML   参数:{“utf8”=&gt;“✓”,“authenticity_token”=&gt;“YEXiv10mHkfdLPRFGHFGNJX2szJQVXK7gezeakEFbe + 57afx6Ih1UjRS6tJNftDLsMI5NS1W84pf2sRhQi0J8g ==”,“recipe”=&gt; {“title”=&gt;“Honey Apple Chicken”,“image”= &gt;#,@ original_filename =“Honey-Mustard-Chicken-and-Apples.jpg”,@ content_type =“image / jpeg”,@ headers =“Content-Disposition:form-data; name = \”recipe [image] \“; filename = \”Honey-Mustard-Chicken-and-Apples.jpg \“\ r \ nContent-Type:image / jpeg \ r \ n”&gt;,“ingredients_attributes”=&gt; {“1455332308170”=&gt; ; {“name”=&gt;“Chicken Thighs”,“_ destroy”=&gt;“false”},“1455332308175”=&gt; {“name”=&gt;“Honey”,“_ destroy”=&gt;“false” },“directions_attributes”=&gt; {“1455332325877”=&gt; {“step”=&gt;“Brown Chicken with skin on。”,“_ destroy”=&gt;“false”},“1455332325880”=&gt; { “step”=&gt;“添加苹果”,“_ destroy”=&gt;“false”}}},“提交”=&gt;“创建食谱”}   用户负载(0.1ms)SELECT“users”。* FROM“users”WHERE“users”。“id”=? ORDER BY“users”。“id”ASC LIMIT 1 [[“id”,1]] 未经许可的参数:步骤 未经许可的参数:步骤    (0.1ms)开始交易   食谱存在(0.2ms)SELECT 1 AS一个来自“食谱”WHERE“食谱”。“image”=? LIMIT 1 [[“image”,“1455332407-84040-0233 / Honey-Mustard-Chicken-and-Apples.jpg”]]   SQL(0.4ms)INSERT INTO“recipes”(“title”,“image”,“user_id”,“created_at”,“updated_at”)VALUES(?,?,?,?,?)[[“title”,“ Honey Apple Chicken“],[”image“,”1455332407-84040-0233 / Honey-Mustard-Chicken-and-Apples.jpg“],[”user_id“,1],[”created_at“,”2016-02- 13 03:00:07.756946“],[”updated_at“,”2016-02-13 03:00:07.756946“]]   SQL(0.2ms)INSERT INTO“ingredients”(“name”,“recipe_id”,“created_at”,“updated_at”)VALUES(?,?,?,?)[[“name”,“Chicken Thighs”],[ “recipe_id”,1],[“created_at”,“2016-02-13 03:00:07.758440”],[“updated_at”,“2016-02-13 03:00:07.758440”]]   SQL(0.1ms)INSERT INTO“ingredients”(“name”,“recipe_id”,“created_at”,“updated_at”)VALUES(?,?,?,?)[[“name”,“Honey”],[“ recipe_id“,1],[”created_at“,”2016-02-13 03:00:07.759655“],[”updated_at“,”2016-02-13 03:00:07.759655“]]    (2.5ms)提交事务 重定向到2 完成302发现于1499ms(ActiveRecord:3.5ms)

在2016-02-12 19:00:09 -0800为:: 1开始获取“/ recipes / 1” RecipesController处理#show as HTML   参数:{“id”=&gt;“1”}   配方加载(0.3ms)SELECT“食谱”。* FROM“食谱”WHERE“食谱”。“id”=?限制1 [[“id”,1]]   用户负载(0.2ms)SELECT“users”。* FROM“users”WHERE“users”。“id”=?限制1 [[“id”,1]]   成分负荷(0.3ms)选择“成分”。*来自“成分”WHERE“成分”。“recipe_id”=? [[“recipe_id”,1]]   方向载荷(0.1ms)选择“方向”。* FROM“方向”WHERE“方向”。“recipe_id”=? [[“recipe_id”,1]]   用户负载(0.1ms)SELECT“users”。* FROM“users”WHERE“users”。“id”=? ORDER BY“users”。“id”ASC LIMIT 1 [[“id”,1]]   在布局/应用程序中呈现recipes / show.html.haml(9.2ms) 在47ms完成200 OK(浏览次数:41.2ms | ActiveRecord:1.0ms)

我不理解卡尔对自己问题的回答:http://localhost:3000/recipes/1 如果你能看到任何东西,那你就是Macgyver!

1 个答案:

答案 0 :(得分:1)

您可以更改:

params.require(:recipe).permit(:title, :image, directions_attributes: [:id, :name, :_destroy], ingredients_attributes: [:id, :name, :_destroy])

params.require(:recipe).permit(:title, :image, directions_attributes: [:id, :name, :step, :_destroy], ingredients_attributes: [:id, :name, :_destroy])

如果不允许,您尝试发送“步骤”,如果您在针对setp列的Direction模型中进行了not_blank验证,则不会保存它。