保存數據給出錯誤，param丟失或者數值爲空

我正在嘗試使用Angular和Rails將輸入保存到我的數據庫中。在當執行的動作，我收到了400 (Bad Request)錯誤控制檯日誌和Rails錯誤是如下的那一刻，保存數據給出錯誤，param丟失或者數值爲空

Started POST "/movies.json" for 127.0.0.1 at 2015-08-24 07:57:09 +0200 
Processing by MoviesController#create as JSON 
    Parameters: {"titles"=>"Star", "movie"=>{}} 
    User Load (0.1ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? ORDER BY "users"."id" ASC LIMIT 1 [["id", 1]] 
Completed 400 Bad Request in 12ms (ActiveRecord: 0.2ms) 

ActionController::ParameterMissing (param is missing or the value is empty: title): 
    app/controllers/movies_controller.rb:24:in `movie_params' 
    app/controllers/movies_controller.rb:8:in `create'

的routes.rb

resources :movies, only: [:create, :index, :show] do 
end

使用的search.html.haml模板，這裏用戶應該輸入標題。

#addMovie{"ng-controller" => "addMovieCtrl"} 
    %div{"ng-click" => "addMovie()"} 
    %input{:type => "text", "ng-model" => "title"} 
    addMovie action.

我movieController.js，這是操作時，將觸發對DIV用戶點擊在#addMovie

angular.module('addMovieseat', ['ui.router', 'templates']) 

    .controller('addMovieCtrl', ['$scope', 'movies', 
    function($scope, movies){ 
     $scope.movies = movies.movies; 

     $scope.addMovie = function(){ 

     if(!$scope.title || $scope.title === '') { return; } 
     movies.create({ 
      titles: $scope.title, 
     }); 
     $scope.title = ''; 
     }; 
    } 
    ])

角服務，

angular.module('addMovieseat') 

    .factory('movies', ['$http', function($http){ 
    var o = { 
     movies: [] 
    }; 

    o.create = function(movie){ 
     return $http.post('/movies.json', movie).success(function(data){ 
     o.movies.push(data); 
     }); 
    }; 

    return o; 

    }])

而且movies_controller。 rb

class MoviesController < ApplicationController 

    def index 
    respond_with Movie.all 
    end 

    def create 
    respond_with Movie.create(movie_params) 
    end 

    private 
    def movie_params 
    params.require(:movie).permit(:title) 
    end 

end

來源

2015-08-24 Peter Boomsma

嘗試改變

movies.create({ 
    titles: $scope.title, 
});

到

movies.create({ 
    title: $scope.title, 
});

歸根結底，你需要你的參數看起來像這樣：

Parameters: {"movie"=>{"title"=>"Star"}}

來源

2015-08-24 06:19:58 thedanotto

改變'titles'到'title'確實固定的'400錯誤'。當我執行保存操作並查看movies.json文件時，它說'[null，null，null，null]'所以標題沒有被保存嗎？只需輸入空白？我在哪裏改變你建議的參數？ –

hmm ..打開'rail console'並鍵入'Movie.last'。如果你看到那裏看起來正確的東西，那麼它正確保存。如果您看到類似於'ActiveRecord Association []'或具有'title：nil'的電影記錄的東西，那麼它不能正確保存。如果正確保存，那麼json輸出存在問題。 – thedanotto

你說得對，標題正確保存。所以JSON輸出存在問題。去看看它。謝謝。 –

保存數據給出錯誤，param丟失或者數值爲空

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