rails6 I want to match the ID of the specified record with the ID I want to match.

I would like to randomly display the record and column specified in the problem model in the view, enter the answer in the text area, and then match the answer column of the previously specified record to flash the correct or incorrect answer.

Currently, you can randomly display the specified records and columns in the view and enter answers in the text area, but when you try to match, you get the error "Couldn't find Problem without an ID".

I am having trouble because the id I tried to match against the id of the randomly displayed record does not match.
Please let me know.

Here is the code.

controller

class ProblemsController<ApplicationController
  before_action —Logged_in_user
  before_action: correct_user, only: %i [edit update]

  def show
    @problem=Problem.find (params[:id])
  end

  def new
    @problem=Problem.new
  end

  def create
    @problem=current_user.problems.build(problem_params)
    @problem.picture.attach (params[:problem][:picture])
    [email protected]
      flash[:success] = 'Problem created!'
      redirect_to problem_path(@problem)
    else
      render 'problems/new'
    end
  end

  default
    @problem=Problem.find (params[:id])
  end

  default update
    @problem=Problem.find (params[:id])
    [email protected](problem_params)
      flash[:success] = 'Problem information updated!'
      redirect_to@problem
    else
      render 'edit'
    end
  end

  def destroy
    @problem=Problem.find (params[:id])
    if current_user.admin?||current_user?(@problem.user)
      @problem.destroy
      flash[:success] = 'Problem Deleted'
      redirect_to request.refer==user_url(@problem.user)?user_url(@problem.user): root_url
    else
      flash[:danger] = 'You cannot delete a problem with another account'
      redirect_to root_url
    end
  end

  def random
    @problem=Problem.offset(land(Problem.count)) .take
  end

  default answer
    @problem=Problem.find (params[:id])
  
    [email protected] server==params [:problem] [:answer]
      flash.now [:notice] = "hit"
    else
      flash.now [:notice] = "Out"
    end
    
    render —random
  end

  private

    def problem_params
      param.require(:problem).permit(:study_type,:title,:exploration_text,:problem_text,:answer,:problem_explanation,:taget_age,:reference,:picture)
    end

    def correct_user
      # Determine if the Current User Has Issues to Update
      @problem=current_user.problems.find_by (id:params[:id])
      redirect_to root_url [email protected]?
    end
end

view

<%provide(:title, "Question")%>
<div class="container">
    <div class="row">
      <%=form_with model:@problem, url: {controller: 'problems', action: 'answer'} do | f | % >
        <%=f.hidden_field: id%>
        <div><%[email protected]_type%></div>br>
        <div><%[email protected]_text%></div>br>
        <div><%[email protected]_text%></div>br>
        <%=f.text_field: answer, value:"%>
        <%=f.submit "Answer", class: "btn btn-primary" %>
        <%=link_to "Next Problem", problems_random_path%>
      <%end%>
    </div>

routes

get "/problems/random", to: "problems#random"
  patch '/problems/random', to: 'problems#answer'
  resources —problems

ruby-on-rails ruby

2022-09-30 16:08

1 Answers

I think the reason is that the @problem id is not included in the path
If you include the id in the path as follows, you do not need the view <%=f.hidden_field:id%> either

route.rb

 resources:problems do
  get:random, on::collection
  patch:random, to: 'problems#answer', on: :member
end

rails routes Results

Prefix Verb URI Pattern Controller#Action
                                         random_problems GET/problems/random(.:format)problems#random
                                          random_problem PATCH/problems/:id/random(.:format)problems#answer
                                                problems GET/problems(.:format)problems#index
                                                         POST/problems(.:format)problems#create
                                             new_problem GET/problems/new(.:format)problems#new
                                            edit_problem GET/problems/:id/edit(.:format)problems#edit
                                                 problem GET/problems/:id(.:format)problems#show
                                                         PATCH/problems/:id(.:format)problems#update
                                                         PUT/problems/:id(.:format)problems#update
                                                         DELETE/problems/:id(.:format)problems#destroy

view

<%=form_with model:@problem, url:random_problem_path(@problem), method::patch do|f|%>

Reference
https://railsguides.jp/routing.html

2022-09-30 16:08

If you have any answers or tips

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