Rails：如何在表单'submit'上指向结果页面

Question

I would like to direct users to a 'results' page when they click the submit button of an 8 question multi-choice quiz, while also saving their answers to the database.

At the moment I'm using 'form_for' and passing in current_user. When submit is clicked it is therefore directed to the User/show action. I would like to go to a page that details a user's results. How would I go about doing that?

Here's my (very rough test) form with, so far, one multi-choice question (styled by bootstrap):

<%= form_for([current_user]) do |f| %>
  <p>
    <%= text_field(:user, :name) %>
  </p>
  <div class="btn-group-vertical clearfix form-group" data-toggle="buttons">
          <label class="btn btn-primary text-left">
            <input name="options" id="option1" type="radio" onclick="multiChoiceClick(1, 1)">A. Always. I'm the leader and should have the final say
          </label>
          <label class="btn btn-primary text-left">
            <input name="options" id="option2" type="radio">B. Sometimes, but I think the group should make decisions if possible
          </label>
          <label class="btn btn-primary text-left">
            <input name="options" id="option3" type="radio">C. I generally don't get involved. The group can make their own decisions without my help
          </label>
  </div>
  <p>
    <%= f.submit("Get my results!") %>
  </p>
<% end %>

I'm currently including the text_field with the user's name just as a test.

I'd like to know how to 'wire up' the first multi-choice question to a User, but display a results page when 'get my results' is clicked.

I may well have several things wrong in this code. If I do, and you have an answer, could you please point out what I've got wrong AND explain the correct way to do that thing? Sorry to be so specific, but I've had a few comments previously that ONLY point out what's wrong, with no alternative.

Thanks.

Edit:

Someone asked for the controller, so here it is:

class HomeController < ApplicationController
    def index
    end

    def whattypeofleader
        @user = current_user
        #@quiz_answer = current_user.quiz_answers(0).build
    end

    def post_params
        params.require(:quiz_answer).permit(:body, :user_id)
    end
end

I have the @quiz_answer commented out because I wasn't sure how to link it up with the form. In the User controller, User has_many :quiz_answers and QuizAnswer belongs_to :user

Answer 1

The redirection should come from your controller. After you managed your datas, a simple :

redirect_to results_path

Your results path should be in your config/routes.rb .

Don't hesitate to share a little bit more, like your controller, to see if we can go deeper :)

[EDIT] following the comments

disclaimer : not sure about the plural management of quizzes by Rails...

Your form should be rendered by the new method, like so :

class QuizzesController < ApplicationController

  ...

  def new
    @user = current_user     #you now have access to the @user variable in your view
  end

  ...
  def create
    # do your thing with your params
    # usually, you want to redirect to the results page if the action has been saved
    # so let's say that you built an @object beforehand with the params you received
    # extactly like @DarkMousse answer :

    if @object.save
      redirect_to results_path
      flash[:notice] = "Thanks for submitting these questions"
    else
      render 'new'
    end

    # this way, if all is good, go to results_path, else, return to the 'new'

  end
  ...

end

In order to access this action, you have to have a route to get to it, let's go to config/routes.rb

YouApplicationName::Application.routes.draw do
  ...
  #it 'opens' the routes to access all method from your quizzes controller
  resources :quizzes
  resources :results
  ...
end

Now you can access quizzes/new. It will render the view in views/quizzes/new , in which you could have a form like so :

form_for @user do |f|
  # ... your form ...
end

Note that @user is accessible thanks to our new method in our QuizzesController.

Now that we added a results to our routes, with a rake routes in the terminal you should find a results_path leading to your (yet to create :) ) ResultsController index method.

It could be looking like this :

class ResultsController < ApplicationController
  def index
    # in order to access all the results in our view
    @results = Results.all
  end
end

This way, the results_path is leading to this action, which by default (thanks to rails) is calling views/results/index.html.erb to render.

Answer 2

Submitting a form involves a POST request. Therefore, you are sending data to the server. In Rails, this can be accomplished through the Create Action . Do something like this in your Home Controller

def create
  @question = Question.new
  if @question.save
    redirect_to results_path
    flash[:notice] = "Thanks for submitting these questions"
  else
    render 'new'
  end
end

Answer 3

只需将对象成功保存到数据库中，就可以在相应的控制器中添加“redirect_to results_path”。