nested-attributes

问题 I'm trying to follow Ryan Bates RailsCast #196: Nested model form part 1. There're two apparent differences to Ryans version: 1) I'm using built-in scaffolding and not nifty as he's using, and 2) I'm running rails 4 (I don't really know what version Ryans using in his cast, but it's not 4). So here's what I did rails new survey2 cd survey2 bundle install rails generate scaffold survey name:string rake db:migrate rails generate model question survey_id:integer content:text rake db:migrate Then

问题 I have two models: user and profile. I would like to use the same form to input data to both at the same time. I was following railscast 196# about Nested Model Form (revised). The problem is, the first part of the form is being generated just fine. It's the second part (where field_for is used), that does not show in the view. I searched stackoverflow for a solution and it was suggested to use a 'build' action somehow. That, however, did not work, due to an error. I would really appreciate

问题 I have two models: user and profile. I would like to use the same form to input data to both at the same time. I was following railscast 196# about Nested Model Form (revised). The problem is, the first part of the form is being generated just fine. It's the second part (where field_for is used), that does not show in the view. I searched stackoverflow for a solution and it was suggested to use a 'build' action somehow. That, however, did not work, due to an error. I would really appreciate

问题 I can import a CSV file and create a new object (listing in this case) using the attributes from a single model. I put this in the Listing model accepts_nested_attributes_for :address where address is an associated model (address has many listings, listing belongs to address). I thought I'd then be able to mass assign attributes from the address model also when importing the CSV file but I get the error: Can't mass-assign protected attributes: unit_number where unit_number in one of the

问题 I can import a CSV file and create a new object (listing in this case) using the attributes from a single model. I put this in the Listing model accepts_nested_attributes_for :address where address is an associated model (address has many listings, listing belongs to address). I thought I'd then be able to mass assign attributes from the address model also when importing the CSV file but I get the error: Can't mass-assign protected attributes: unit_number where unit_number in one of the

问题 I am having trouble with updating my nested attributes when I sending patch request. I want to update my recipe_ingredients when I update my recipe. Every time when I update my recipe, recipe gets updated, but recipe_ingredients are just appending for that recipe. Please help~ Many thanks~ Recipe Controller ``` def update @recipe = Recipe.find(params[:id]) if @recipe.update(recipe_params) @recipe_ingredients = @recipe.recipe_ingredients.all head :no_content else render json: @recipe.errors,

问题 I have a nested form gem issue and can't figure it out for days. When "edit" model, why my selectbox not filled with current value from database? my "customize" view : <%= nested_form_for @order_detail, :url => create_customize_cart_path do |f| %> # some field here <%= f.fields_for :order_customs do |builder| %> <%= render "order_customs_form", :f => builder %> <% end %> <%= f.link_to_add "Add Order Customize", :order_customs %> <%= f.submit %> <%end%> my partial view (as nested) : <%= f

问题 This is the most difficult question I've come to in the past few months of starting my Ruby on Rails journey. It seems like many people would face it, but I can't find anything on the web that addresses this problem, which means my question is either insanely easy that I am thinking too hard or I am asking the wrong question. Please help me get to the right answer and/or the right question! When a User submits a form it includes the attribute (quantified) and the nested attributes (result).

问题 I am quite new to both programming and ruby on rails. I have followed http://ruby.railstutorial.org/ and then i have started to watch episodes from http://railscasts.com. What i am trying to do is that "Handling multiple models in a single form". Below you will see my models and their assosications and also the view of form that i am trying to get info from users. My modelling is that; There are employers, employers have interviews and interviews have questions. Customquestion model: class

问题 My accepts_nested_attributes_for only saves the parent and not the child (nested) attributes. This is many_to_many relationship between parent and child. Problem: nothing happens and nothing is saved. But on the page, I get this message: utf8: "\xE2\x9C\x93" authenticity_token: 9Pjxt7e5RRgWVGafRyMoDqBSqmtj/R2zBSiVxGGxFOI= parent: !map:ActiveSupport::HashWithIndifferentAccess name: "Test" gender: Male children_attributes: !map:ActiveSupport::HashWithIndifferentAccess "0": !map:ActiveSupport: