Question

我正在尝试示例todo应用程序，我在离子中下载该示例并且我尝试它正在工作，并且我试图在newTask.html中添加另一个字段并在本地数据库中添加与之前的值相同，但它是不工作可以帮助我如何在本地数据库中添加另一个文件并在列表html文件中获得结果....

NewTask.html
------------
<div class="modal" ng-controller="newTaskCtrl">
    <ion-header-bar class="bar-stable">
        <h1 class="title">Add New Task</h1>
        <button class="button button-clear button-positive" ng-click="closeNewTask()">Cancel</button>
    </ion-header-bar>

    <ion-content>
        <form ng-submit="createTask(task)">
            <div class="list">
                <!--label class="item item-input">
                    <input type="text" placeholder="Title What do you need to do?" ng-model="task.title">
                </label-->

                 <label class="item item-input item-stacked-label">
                    <span class="input-label">Title</span>
                    <input type="text" placeholder="What do you need to do?" ng-model="task.title">
                     <span class="input-label">Lasr Name</span>
                    <input type="text" placeholder="Firstname?" ng-model="task.firstname">
                </label>
                <!--div class="row">
                <label class="col">
                    <input type="" ng-model="time">
                </label>
                <label class="col">
                    <input type="text" placeholder="End?" >
                </label>
                    </div-->
            </div>
            <div class="padding">
                <button type="submit" class="button button-block button-positive">Create Task</button>
            </div>
        </form>
    </ion-content>
</div>

NewTaskCtrl.js
-------------------
todoApp.controller('newTaskCtrl', function($scope, $ionicModal, $ionicPopup, SQLService) {
    // Called when the form is submitted

    $scope.createTask = function(task) {
    SQLService.set(task.title,task.firstname);
    $scope.loadTask();
    $scope.taskModal.hide();
    task.title = "";
    task.firstname = "";
  };


SQLService.js
------------------


todoApp.factory("SQLService", function ($q) {

    var db;
    var task='';
    var deltask;

    function createDB() {
        try {
            db = window.openDatabase("todoDB", "1.0", "ToDoApp", 10*1024*1024);
            db.transaction(function(tx){
                tx.executeSql("CREATE TABLE IF NOT EXISTS tasks (id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, title VARCHAR(100), firstname VARCHAR(100) )",[]);
            });
        } catch (err) {
            alert("Error processing SQL: " + err);
        }
        console.log('database created');
    }

    function setTasks(title,firstname){
        return promisedQuery("INSERT INTO tasks(title,firstname) VALUES ('" + title + "','" + firstname + "')", defaultResultHandler, defaultErrorHandler);
    }
     function getTasks(){
        return promisedQuery('SELECT * FROM tasks', defaultResultHandler, defaultErrorHandler);
    }

    function defaultResultHandler(deferred) {
      return function(tx, results) {
        var len = results.rows.length;
        var output_results = [];

        for (var i=0; i<len; i++){
            var t = {'id':results.rows.item(i).id,'title':results.rows.item(i).title,'firstname':results.rows.item(i).firstname};
            output_results.push(t);             
        }

        deferred.resolve(output_results);  
      }  
    }

    function defaultErrorHandler(deferred) {
      return function(tx, results) {
        var len = 0;
        var output_results = ''; 
        deferred.resolve(output_results);
      } 
    }

    function promisedQuery(query, successCB, errorCB) {
      var deferred = $q.defer();
      db.transaction(function(tx){
        tx.executeSql(query, [], successCB(deferred), errorCB(deferred));      
      }, errorCB);
      return deferred.promise;  
    }

    return {
        setup: function() {
          return createDB();
        },
        set: function(title,firstname) {
            return setTasks(title,firstname);
        },

        all: function() {
          return getTasks();
        }
    }
});

PLease see the SQL Service and help me,is it correct what i add the filed name in  "setTasks function.."

Answer 1

好的，所以你已经尝试了下载的示例，现在你已经在NewTask.html中添加了另一个字段。但是你添加的新字段没有被添加到表中吗？

您是否尝试更改已打开的数据库版本？

db = window.openDatabase（“todoDB”，“1.0”，“ToDoApp”，10 * 1024 * 1024）; 至 db = window.openDatabase（“todoDB”，“2.0”，“ToDoApp”，10 * 1024 * 1024）;

如何在本地数据库中设置和显示另一个文件？

1 个答案: