nested-forms

问题 I have these models: class User < ActiveRecord::Base has_one :city accepts_nested_attributes_for :city end class City < ActiveRecord::Base belongs_to :user end This controller action: def create @user = User.new(params[:user]) respond_to do |format| if @user.save format.html { redirect_to(@user, :notice => 'User was successfully created.') } format.xml { render :xml => @user, :status => :created, :location => @user } else format.html { render :action => "new" } format.xml { render :xml =>

问题 I have these models: class User < ActiveRecord::Base has_one :city accepts_nested_attributes_for :city end class City < ActiveRecord::Base belongs_to :user end This controller action: def create @user = User.new(params[:user]) respond_to do |format| if @user.save format.html { redirect_to(@user, :notice => 'User was successfully created.') } format.xml { render :xml => @user, :status => :created, :location => @user } else format.html { render :action => "new" } format.xml { render :xml =>

问题 Update: I updated this after doing some digging and realizing that this might be twitter-bootstrap causing the problem. Here is a rough version of my nested form: <%= simple_nested_form_for @user, :html => { :class => 'form-horizontal' } do |f| %> <fieldset> <%= f.input :email %> <%= f.input :name_first %> <%= f.input :name_last %> <table class="table table-striped"> <thead> <tr> <th>Active</th> <th>Company</th> <th>Role</th> <th>Actions</th> </tr> </thead> <tbody> <%= f.simple_fields_for

问题 I am using Mongoid on Rails 3 and trying to build a nested form. The problem I run into is when I used accept_nested_attributes_for method, I get this error message: undefined method `persisted?' for []:Array Is anyone else having problem with nested forms in Mongoid? What can I do to fix it? Edit: more about the error. This is the full trace. mongoid (2.0.0.beta.19) lib/mongoid/criteria.rb:156:in `send' mongoid (2.0.0.beta.19) lib/mongoid/criteria.rb:156:in `method_missing' mongoid (2.0.0

问题 Question : How do I turn a calendar into a form where the dateselect is rendered to match the calendar day instead of the current date? What I'm trying to do: I'd like to create a calendar that displays the cyclist's workouts. Create workouts within each calendar day, automatically rendering the workoutdate that matches the given day in the form Each workout has many intervals. Each calendar day has one workout. Plugins: Extracted the table_builder.rb and calendar_helper.rb from https:/

问题 Question : How do I turn a calendar into a form where the dateselect is rendered to match the calendar day instead of the current date? What I'm trying to do: I'd like to create a calendar that displays the cyclist's workouts. Create workouts within each calendar day, automatically rendering the workoutdate that matches the given day in the form Each workout has many intervals. Each calendar day has one workout. Plugins: Extracted the table_builder.rb and calendar_helper.rb from https:/

问题 Update: according to the stack trace, posted at the end of this question, I think the real problem is to figure out what attr_accessible and build association settings I need to get the contributors and linkers attributes to update with the new isbn id. Please help me! Following on from this question... I've got a join table between two models - isbns and contributors - which have a many to many relationship. I want to use the existing values from the contributor model in a collection_select

问题 Update: according to the stack trace, posted at the end of this question, I think the real problem is to figure out what attr_accessible and build association settings I need to get the contributors and linkers attributes to update with the new isbn id. Please help me! Following on from this question... I've got a join table between two models - isbns and contributors - which have a many to many relationship. I want to use the existing values from the contributor model in a collection_select

问题 I was following the Railscast #196 revised and everything went basically fine, but I am not able to add new fields to the nested form. The "remove fields" function works nicely, but after click on "link_to_add_fields", the browser jumps to the top of the page, and no new field appears. There are already a ton of questions to this railscast, like here or here, and I tried to read all of them, but most of them are referring to the original casts from 2010. I am stuck for hours now, and I can't

问题 I have 2 models User and Address . class User < ActiveRecord::Base has_many :addresses accepts_nested_attributes_for :addresses end class Address < ActiveRecord::Base belongs_to :user end My controller def new @user = User.new @user.addresses << Address.new @user.addresses << Address.new end def create @user = User.new(params[:user]) if @user.save #do something else render 'new' end end And my View <%= form_for @user do |f| %> <%= f.label :name %> <%= f.text_field :name %> <%= f.fields_for