如何使用“link_to”而不是“checkbox”进行POST？

这个想法是，当用户有missed_day （又名罢工）时，他会点击此按钮。 他目前可以点击一个复选框来标记missed_day 。

习惯/节目

 
  
 <label id="" class="habit-id">Strikes:  
 <label id="" class="habit-id-two">Strikes:   = (index + 1) %> <p data-submit-url="" data-delete-url="">  <label id="" class="level-id">Level :  <label id="" class="level-id-two">Level :   0, {class: "habit-check"} %>  1, {class: "habit-check"} %>  2, {class: "habit-check"} %> 
   
  

habit.js

 $(document).ready(function() { $(".habit-check").change(function() { var submitUrl = $(this).parents("p").data("submit-url"); var deleteUrl = $(this).parents("p").data("delete-url"); if($(this).is(":checked")) { $.ajax( { url: submitUrl, method: "POST" }) .done(function () { location.reload(); }); } else { $.ajax( { url: deleteUrl, method: "DELETE" }) .done(function () { location.reload(); }); } }); }); 

days_missed_controller

 class DaysMissedController < ApplicationController before_action :logged_in_user, only: [:create, :destroy] before_action :correct_user, only: [:create, :destroy] def create habit = Habit.find(params[:habit_id]) habit.missed_days = habit.missed_days + 1 @habit.save! level = habit.levels.find(params[:level_id]) level.missed_days = level.missed_days + 1 if level.missed_days == 3 level.missed_days = 0 level.days_lost += habit.calculate_days_lost + 2 end level.save! head :ok # this returns an empty response with a 200 success status code end def destroy habit = Habit.find(params[:habit_id]) habit.missed_days = habit.missed_days - 1 @habit.save! level = habit.levels.find(params[:level_id]) level.missed_days = level.missed_days - 1 level.save! head :ok # this returns an empty response with a 200 success status code end private def correct_user @habit = current_user.habits.find(params[:habit_id]) redirect_to habits_path, notice: "Not authorized to edit this habit" if @habit.nil? end end 

第一张图片来自主页。 这是两个按钮的代码：

 <%= link_to ''.html_safe, mark_completed_path(habit), remote: true, method: 'put', class: 'update_habit', id: 'home_check' %> <%= link_to ''.html_safe, habit_level_days_missed_index_path({ habit_id: @habit.id, level_id: level.id }), remote: true, method: 'put', class: 'habit-check' %> 

我们如何让第二个按钮起作用？ 这个尝试给了我undefined method 'id' for nil:NilClass

这是它的要点 。

Answer 1

您需要更改此链接

 <%= link_to ''.html_safe, habit_level_days_missed_index_path({ habit_id: @habit.id, level_id: level.id }), remote: true, method: 'put', class: 'habit-check' %> 

至

 <%= link_to ''.html_safe, habit_level_days_missed_index_path({ habit_id: habit, level_id: habit.current_level }), remote: true, method: 'put', class: 'habit-check' %>