如何从一次提交更新两个_form？
How to update two _form from one submit?
如果 current_user 选择更新他的电子邮件，而不必使用单独的提交按钮，他如何才能更新他的电子邮件？
当前代码
<%= form_for(@challenge) do |challenge| %>
<%= challenge.action %>
<%= challenge.send_email %>
<% end %>
<%= form_for(current_user) do |user| %>
<%= user.email %>
<%= user.submit %>
<% end %>
<%= form_for(@challenge) do |challenge| %>
<%= challenge.submit %>
<% end %>
总体思路
<%= form_for(@challenge) do |challenge| %>
<%= challenge.action %>
<%= challenge.send_email %>
<%= form_for(current_user) do |user| %> # Or somehow remove form_for(current_user) altogether while still being able to update current_user.email within the form_for(@challenge)
<%= user.email %>
<% end %>
<%= challenge.submit %>
<% end %>
表格的图片
提供控制器代码，看看我们是否可以通过 fields_for
完成这项工作
challenges_controller
class ChallengesController < ApplicationController
before_action :set_challenge, only: [:show, :edit, :update, :destroy, :challenging, :mark_accomplished, :mark_completed, :create_freebie, :like]
respond_to :html, :json
def show
@challenge_to_deadline = current_user.challenges.group_by {|i| i.deadline} if current_user
@notable = @challenge
@notes = @notable.notes
@note = Note.new
@commentable = @challenge
@comments = @commentable.comments
@comment = Comment.new
@correct_user = current_user.challenges.find_by(id: params[:id])
end
def new
@challenge = Challenge.new
respond_modal_with @challenge, location: root_path
end
def edit
end
def create
@challenge = Challenge.new(challenge_params)
if params[:step] == '2'
if current_user == nil
# If there is no user, store the lifetime values to the session.
session[:challenge_action] = challenge_params[:action]
session[:challenge_committed] = challenge_params[:committed]
session[:challenge_deadline] = [params["challenge"]["deadline(3i)"], params["challenge"]["deadline(2i)"], params["challenge"]["deadline(1i)"]].join('/')
session[:challenge_date_started] = [params["challenge"]["date_started(3i)"], params["challenge"]["date_started(2i)"], params["challenge"]["date_started(1i)"]].join('/')
session[:challenge_order] = challenge_params[:order]
session[:challenge_days_challenged] = challenge_params[:days_challenged]
session[:challenge_why] = challenge_params[:why]
session[:challenge_conceal] = challenge_params[:conceal]
redirect_to signup_path
else
@challenge = current_user.challenges.build(challenge_params)
if @challenge.conceal == true
@challenge.save
redirect_to root_path
if @challenge.date_started.present?
flash[:info] = 'habit Challenge secretly saved! Click "Strike 1" upon incompleting a day.'
else
flash[:info] = 'goal Challenge secretly saved! Click checkmark upon completing it.'
end
elsif
@challenge.save
track_activity @challenge
redirect_to root_path
if @challenge.date_started.present?
flash[:info] = 'habit Challenge saved! Click "Strike 1" upon incompleting a day.'
else
flash[:info] = 'goal Challenge saved! Click checkmark upon completing it.'
end
else
respond_modal_with @challenge
end
end
end
end
def update
@challenge.update(challenge_params)
flash[:info] = 'Challenge updated'
respond_modal_with @challenge, location: root_path
end
private
def set_challenge
@challenge = Challenge.find(params[:id])
end
def challenge_params
params.require(:challenge).permit(
:action,
:why,
:like,
:deadline,
:accomplished,
:tag_list,
:conceal,
:archive,
:trigger,
:missed_days,
:target,
:reward,
:order,
:date_started,
:date_ended,
:days_challenged,
:completed_at,
:freebie,
:freebie_date,
:send_email => [],
:committed => [])
end
end
users_controller
class UsersController < ApplicationController
before_action :logged_in_user, only: [:index, :edit, :update, :destroy, :following, :followers]
before_action :correct_user, only: [:edit, :update]
def show
@user = User.find(params[:id])
@past_challenges = @user.challenges.publish.order("deadline ASC").select{ |challenge| challenge.deadline < Date.current if challenge.deadline.present? }
@past_challenges_by_years = @past_challenges.group_by { |t| t.deadline.beginning_of_year }
@present_oneshot_challenges = @user.challenges.unaccomplished.publish.order("deadline ASC").select{ |challenge| challenge.deadline == Date.current if challenge.deadline.present? }
@present_habit_challenges = @user.challenges.unaccomplished.publish.order("date_started DESC").select{ |challenge| challenge.date_started <= Date.tomorrow if challenge.date_started.present? }
@future_challenges = @user.challenges.unaccomplished.publish.order("deadline ASC").select{ |challenge| challenge.deadline > Date.current if challenge.deadline.present? }
@future_challenges_by_years = @future_challenges.group_by { |t| t.deadline.beginning_of_year }
@inspirations = @user.inspirations.publish
end
def new
@user = User.new
end
def create
@user = User.new(user_params)
if @user.save
action = session.delete(:challenge_action)
deadline = session.delete(:challenge_deadline)
committed = session.delete(:challenge_committed)
date_started = session.delete(:challenge_date_started)
order = session.delete(:challenge_order)
days_challenged = session.delete(:challenge_days_challenged)
why = session.delete(:challenge_why)
conceal = session.delete(:challenge_conceal)
# Create
if deadline.present?
@user.challenges.create(action: action, deadline: deadline, why: why, conceal: conceal, date_started: date_started, committed: committed, days_challenged: days_challenged)
end
@user.send_welcome_email
log_in @user
redirect_to tutorial_url
flash[:info] = 'Let the games begin! Add another challenge with + Challenge'
else
render 'new'
end
end
def edit
@user = User.find(params[:id])
end
def update
@user = User.find(params[:id])
if @user.update_attributes(user_params)
redirect_to root_url
flash[:success] = "Settings updated"
else
render 'edit'
end
end
private
def user_params
if params[:conceal] = true
params.require(:user).permit(:time_zone, :name, :email, :tag_list, :password, :conceal, inspirations_attributes: [:name, :tag_list, :conceal], activities_attributes: [:conceal, :action, :trackable_id, :trackable_type])
else
params[:user][:conceal] = false
params.require(:user).permit(:time_zone, :name, :image, :tag_list, :email, :password, inspirations_attributes: [:name, :tag_list], activities_attributes: [:action, :trackable_id, :trackable_type])
end
end
# Confirms a logged-in user.
def logged_in_user
unless logged_in?
store_location
flash[:danger] = "Please sign in first"
redirect_to root_url
end
end
# Confirms the correct user.
def correct_user
@user = User.find(params[:id])
redirect_to(root_url) unless current_user?(@user)
end
end
在另一个 form 中嵌入 form 无效 html。一个页面中可以有多个表单，但它们不能相互嵌入。
如果您希望不同模型的字段具有相同的表单，根据这些模型之间的关联，您可以使用 form_for 中的 fields_for 来呈现表单字段从那些模型。然后在提交表单时，再次根据模型之间的关联，您可以保留数据。
您还可以使用表格的 javascript 和 submit/update 部分。例如：当 text_field 的内容发生变化时，您可以触发 AJAX 请求并持久化数据。
有关详细信息，请参阅 FormHelper#fields_for。
更新：
根据您在评论中的回复，您拥有以下型号：
class User < ActiveRecord::Base
has_many :challenges
end
class Challenge < ActiveRecord::Base
belongs_to :user
end
你有两种方法。
方法 1：通过 controller 操作过滤器。从controller中的params截取用户的email并更新。类似于：
class ChallengesController < ApplicationController
before_action :update_user_email, if: proc {|c| c.current_user.present? && c.params[:email].present? }
private
def update_user_email
email = params[:email]
current_user.update_attribute(:email, email)
end
end
并更新您的表单代码如下：
<%= form_for(@challenge) do |challenge| %>
# include fields for challenge
<%= text_field_tag :email, current_user.email %>
<%= challenge.submit %>
<% end %>
方法 2：通过 model 回调。在模型中使用 attr_accessor 和 callbacks 的组合。
class Challenge < ActiveRecord::Base
belongs_to :user
attr_accessor :user_email
before_save :update_user_email, if: :user_email_present?
protected
def user_email
self.user.email if self.user.present?
end
def user_email_present?
self.user_email.present?
end
def update_user_email
# based on your logic in controller, looks like the
# `current_user` and the `user` of the `challenge`
# are one and the same. So you could directly update
# `email` on the `user` object.
self.user.update_attribute(:email, self.user_email)
end
end
并更新您的表单代码如下：
<%= form_for(@challenge) do |challenge| %>
# include fields for challenge
<%= challenge.text_field :user_email, current_user.email %>
<%= challenge.submit %>
<% end %>
如果 current_user 选择更新他的电子邮件，而不必使用单独的提交按钮，他如何才能更新他的电子邮件？
当前代码
<%= form_for(@challenge) do |challenge| %>
<%= challenge.action %>
<%= challenge.send_email %>
<% end %>
<%= form_for(current_user) do |user| %>
<%= user.email %>
<%= user.submit %>
<% end %>
<%= form_for(@challenge) do |challenge| %>
<%= challenge.submit %>
<% end %>
总体思路
<%= form_for(@challenge) do |challenge| %>
<%= challenge.action %>
<%= challenge.send_email %>
<%= form_for(current_user) do |user| %> # Or somehow remove form_for(current_user) altogether while still being able to update current_user.email within the form_for(@challenge)
<%= user.email %>
<% end %>
<%= challenge.submit %>
<% end %>
表格的图片
提供控制器代码，看看我们是否可以通过 fields_for
完成这项工作challenges_controller
class ChallengesController < ApplicationController
before_action :set_challenge, only: [:show, :edit, :update, :destroy, :challenging, :mark_accomplished, :mark_completed, :create_freebie, :like]
respond_to :html, :json
def show
@challenge_to_deadline = current_user.challenges.group_by {|i| i.deadline} if current_user
@notable = @challenge
@notes = @notable.notes
@note = Note.new
@commentable = @challenge
@comments = @commentable.comments
@comment = Comment.new
@correct_user = current_user.challenges.find_by(id: params[:id])
end
def new
@challenge = Challenge.new
respond_modal_with @challenge, location: root_path
end
def edit
end
def create
@challenge = Challenge.new(challenge_params)
if params[:step] == '2'
if current_user == nil
# If there is no user, store the lifetime values to the session.
session[:challenge_action] = challenge_params[:action]
session[:challenge_committed] = challenge_params[:committed]
session[:challenge_deadline] = [params["challenge"]["deadline(3i)"], params["challenge"]["deadline(2i)"], params["challenge"]["deadline(1i)"]].join('/')
session[:challenge_date_started] = [params["challenge"]["date_started(3i)"], params["challenge"]["date_started(2i)"], params["challenge"]["date_started(1i)"]].join('/')
session[:challenge_order] = challenge_params[:order]
session[:challenge_days_challenged] = challenge_params[:days_challenged]
session[:challenge_why] = challenge_params[:why]
session[:challenge_conceal] = challenge_params[:conceal]
redirect_to signup_path
else
@challenge = current_user.challenges.build(challenge_params)
if @challenge.conceal == true
@challenge.save
redirect_to root_path
if @challenge.date_started.present?
flash[:info] = 'habit Challenge secretly saved! Click "Strike 1" upon incompleting a day.'
else
flash[:info] = 'goal Challenge secretly saved! Click checkmark upon completing it.'
end
elsif
@challenge.save
track_activity @challenge
redirect_to root_path
if @challenge.date_started.present?
flash[:info] = 'habit Challenge saved! Click "Strike 1" upon incompleting a day.'
else
flash[:info] = 'goal Challenge saved! Click checkmark upon completing it.'
end
else
respond_modal_with @challenge
end
end
end
end
def update
@challenge.update(challenge_params)
flash[:info] = 'Challenge updated'
respond_modal_with @challenge, location: root_path
end
private
def set_challenge
@challenge = Challenge.find(params[:id])
end
def challenge_params
params.require(:challenge).permit(
:action,
:why,
:like,
:deadline,
:accomplished,
:tag_list,
:conceal,
:archive,
:trigger,
:missed_days,
:target,
:reward,
:order,
:date_started,
:date_ended,
:days_challenged,
:completed_at,
:freebie,
:freebie_date,
:send_email => [],
:committed => [])
end
end
users_controller
class UsersController < ApplicationController
before_action :logged_in_user, only: [:index, :edit, :update, :destroy, :following, :followers]
before_action :correct_user, only: [:edit, :update]
def show
@user = User.find(params[:id])
@past_challenges = @user.challenges.publish.order("deadline ASC").select{ |challenge| challenge.deadline < Date.current if challenge.deadline.present? }
@past_challenges_by_years = @past_challenges.group_by { |t| t.deadline.beginning_of_year }
@present_oneshot_challenges = @user.challenges.unaccomplished.publish.order("deadline ASC").select{ |challenge| challenge.deadline == Date.current if challenge.deadline.present? }
@present_habit_challenges = @user.challenges.unaccomplished.publish.order("date_started DESC").select{ |challenge| challenge.date_started <= Date.tomorrow if challenge.date_started.present? }
@future_challenges = @user.challenges.unaccomplished.publish.order("deadline ASC").select{ |challenge| challenge.deadline > Date.current if challenge.deadline.present? }
@future_challenges_by_years = @future_challenges.group_by { |t| t.deadline.beginning_of_year }
@inspirations = @user.inspirations.publish
end
def new
@user = User.new
end
def create
@user = User.new(user_params)
if @user.save
action = session.delete(:challenge_action)
deadline = session.delete(:challenge_deadline)
committed = session.delete(:challenge_committed)
date_started = session.delete(:challenge_date_started)
order = session.delete(:challenge_order)
days_challenged = session.delete(:challenge_days_challenged)
why = session.delete(:challenge_why)
conceal = session.delete(:challenge_conceal)
# Create
if deadline.present?
@user.challenges.create(action: action, deadline: deadline, why: why, conceal: conceal, date_started: date_started, committed: committed, days_challenged: days_challenged)
end
@user.send_welcome_email
log_in @user
redirect_to tutorial_url
flash[:info] = 'Let the games begin! Add another challenge with + Challenge'
else
render 'new'
end
end
def edit
@user = User.find(params[:id])
end
def update
@user = User.find(params[:id])
if @user.update_attributes(user_params)
redirect_to root_url
flash[:success] = "Settings updated"
else
render 'edit'
end
end
private
def user_params
if params[:conceal] = true
params.require(:user).permit(:time_zone, :name, :email, :tag_list, :password, :conceal, inspirations_attributes: [:name, :tag_list, :conceal], activities_attributes: [:conceal, :action, :trackable_id, :trackable_type])
else
params[:user][:conceal] = false
params.require(:user).permit(:time_zone, :name, :image, :tag_list, :email, :password, inspirations_attributes: [:name, :tag_list], activities_attributes: [:action, :trackable_id, :trackable_type])
end
end
# Confirms a logged-in user.
def logged_in_user
unless logged_in?
store_location
flash[:danger] = "Please sign in first"
redirect_to root_url
end
end
# Confirms the correct user.
def correct_user
@user = User.find(params[:id])
redirect_to(root_url) unless current_user?(@user)
end
end
在另一个 form 中嵌入 form 无效 html。一个页面中可以有多个表单，但它们不能相互嵌入。
如果您希望不同模型的字段具有相同的表单，根据这些模型之间的关联，您可以使用 form_for 中的 fields_for 来呈现表单字段从那些模型。然后在提交表单时，再次根据模型之间的关联，您可以保留数据。
您还可以使用表格的 javascript 和 submit/update 部分。例如：当 text_field 的内容发生变化时，您可以触发 AJAX 请求并持久化数据。
有关详细信息，请参阅 FormHelper#fields_for。
更新：
根据您在评论中的回复，您拥有以下型号：
class User < ActiveRecord::Base
has_many :challenges
end
class Challenge < ActiveRecord::Base
belongs_to :user
end
你有两种方法。
方法 1：通过 controller 操作过滤器。从controller中的params截取用户的email并更新。类似于：
class ChallengesController < ApplicationController
before_action :update_user_email, if: proc {|c| c.current_user.present? && c.params[:email].present? }
private
def update_user_email
email = params[:email]
current_user.update_attribute(:email, email)
end
end
并更新您的表单代码如下：
<%= form_for(@challenge) do |challenge| %>
# include fields for challenge
<%= text_field_tag :email, current_user.email %>
<%= challenge.submit %>
<% end %>
方法 2：通过 model 回调。在模型中使用 attr_accessor 和 callbacks 的组合。
class Challenge < ActiveRecord::Base
belongs_to :user
attr_accessor :user_email
before_save :update_user_email, if: :user_email_present?
protected
def user_email
self.user.email if self.user.present?
end
def user_email_present?
self.user_email.present?
end
def update_user_email
# based on your logic in controller, looks like the
# `current_user` and the `user` of the `challenge`
# are one and the same. So you could directly update
# `email` on the `user` object.
self.user.update_attribute(:email, self.user_email)
end
end
并更新您的表单代码如下：
<%= form_for(@challenge) do |challenge| %>
# include fields for challenge
<%= challenge.text_field :user_email, current_user.email %>
<%= challenge.submit %>
<% end %>