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Monday, January 9, 2017

103 Ionic Local Storage Factory


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103 CodePen Ionic Local Storage Factory
The objective of this tutorial is to create a default local storage database called “projects” containing one default record ie “myproject”.

Reference: http://ionicframework.com/docs/guide/building.html

1) Add JS Factory Code To Read/Write Data to Local Storage


The Projects factory handles saving and loading projects the from local storage
red=will be removed in the future
yellow=new, implemented codes
blue=will be implemented in the future

angular.module('app', ['ionic'])
.factory('Projects', function() {
  return {
     all: function() {
      var projectString = window.localStorage['projects'];
      if(projectString) {
        return angular.fromJson(projectString);
      }
      return [];
    },  
    save: function(projects) {
      window.localStorage['projects'] = angular.toJson(projects);
    },
    newProject: function(projectTitle) {
      // Add a new project
      return {
        title: projectTitle,
        tasks: []
      };
    }
  }
})
.controller('TodoCtrl', function($scope, $ionicModal, $ionicSideMenuDelegate, $timeout, Projects ) {
  // No need for testing data anymore
  //$scope.tasks = [];
   // A utility function for creating a new project
  // with the given projectTitle
  var createProject = function(projectTitle) {
    var newProject = Projects.newProject(projectTitle);
    $scope.projects.push(newProject);
    Projects.save($scope.projects);
    //$scope.selectProject(newProject, $scope.projects.length-1);
  }
  // Load or initialize projects
  $scope.projects = Projects.all();

  // Create and load the Modal
  $ionicModal.fromTemplateUrl('new-task.html', function(modal) {
    $scope.taskModal = modal;
  }, {
    scope: $scope,
    animation: 'slide-in-up'
  });
  // Called when the form is submitted
  $scope.createTask = function(task) {
   //$scope.tasks.push({
   //  title: task.title
   //});
    $scope.taskModal.hide();
    task.title = "";
  };
  // Open our new task modal
  $scope.newTask = function() {
    $scope.taskModal.show();
  };
  // Close the new task modal
  $scope.closeNewTask = function() {
    $scope.taskModal.hide();
  };
  // toggle Side Menu  
   $scope.toggleProjects = function() {
    $ionicSideMenuDelegate.toggleLeft();
  };
  // Try to create the first project, make sure to defer
  // this by using $timeout so everything is initialized
  // properly
  $timeout(function() {
    if($scope.projects.length == 0) {
      while(true) {
        var projectTitle = "MyProject";
        if(projectTitle) {
          createProject(projectTitle);
          break;
        }
      }
    }
  }, 1000);
})

2) Test

Check in Developer Panel (Chrome) that the database “projects” has been created with the default record “MyProject”.
Name: 103CodePenIonicLocalStorageFactory01 (http://codepen.io/notarazi/pen/xgwYdY?editors=1010 )

3) Add JS Codes to process Tasks data

red=will be removed in the future
yellow=new, implemented codes
blue=will be implemented in the future

angular.module('app', ['ionic'])

.factory('Projects', function() {
 return {
    all: function() {
     var projectString = window.localStorage['projects'];
     if(projectString) {
       return angular.fromJson(projectString);
     }
     return [];
   },
   save: function(projects) {
     window.localStorage['projects'] = angular.toJson(projects);
   },
   newProject: function(projectTitle) {
     // Add a new project
     return {
       title: projectTitle,
       tasks: []
     };
   }
 }
})

.controller('TodoCtrl', function($scope, $ionicModal, $ionicSideMenuDelegate, $timeout, Projects ) {
  // No need for testing data anymore
 //$scope.tasks = [];


  // A utility function for creating a new project
 // with the given projectTitle
 var createProject = function(projectTitle) {
   var newProject = Projects.newProject(projectTitle);
   $scope.projects.push(newProject);
   Projects.save($scope.projects);
   //$scope.selectProject(newProject, $scope.projects.length-1);
 }


 // Load or initialize projects
 $scope.projects = Projects.all();

    // Grab the the first project
 $scope.activeProject = $scope.projects[0];


 // Called to select the given project
 $scope.selectProject = function(project, index) {
   $scope.activeProject = project;
    //Projects.setLastActiveIndex(index);
   //$ionicSideMenuDelegate.toggleLeft(false);

 };

 // Create and load the Modal
 $ionicModal.fromTemplateUrl('new-task.html', function(modal) {
   $scope.taskModal = modal;
 }, {
   scope: $scope,
   animation: 'slide-in-up'
 });

 // Called when the form is submitted
 $scope.createTask = function(task) {
   $scope.activeProject.tasks.push({
     title: task.title
   });
   $scope.taskModal.hide();
   task.title = "";
 };

 // Open our new task modal
 $scope.newTask = function() {
   $scope.taskModal.show();
 };

 // Close the new task modal
 $scope.closeNewTask = function() {
   $scope.taskModal.hide();
 };
 // toggle Side Menu
  $scope.toggleProjects = function() {
   $ionicSideMenuDelegate.toggleLeft();
 };

 // Try to create the first project, make sure to defer
 // this by using $timeout so everything is initialized
 // properly
 $timeout(function() {
   if($scope.projects.length == 0) {
     while(true) {
       var projectTitle = "MyProject";
       if(projectTitle) {
         createProject(projectTitle);
         break;
       }
     }
   }
 }, 1000);

})
  // Called when the form is submitted
  $scope.createTask = function(task) {
    //$scope.tasks.push({
    //  title: task.title
    //});
    $scope.taskModal.hide();
    task.title = "";
  };
  // Open our new task modal
  $scope.newTask = function() {
    $scope.taskModal.show();
  };
  // Close the new task modal
  $scope.closeNewTask = function() {
    $scope.taskModal.hide();
  };
  // toggle Side Menu  
   $scope.toggleProjects = function() {
    $ionicSideMenuDelegate.toggleLeft();
  };
  // Try to create the first project, make sure to defer
  // this by using $timeout so everything is initialized
  // properly
  $timeout(function() {
    if($scope.projects.length == 0) {
      while(true) {
        var projectTitle = "MyProject";
        if(projectTitle) {
          createProject(projectTitle);
          break;
        }
      }
    }
  }, 1000);
})
Name: 103CodePenIonicLocalStorageFactory02 ()

4) Add codes to insert new record groups

At the moment our project stores only a single project.
We will add JS codes to allow creation of new project.

4.1) Modify HTML codes to display side menu


<html>
  <head>
    <meta charset="utf-8">
    <title>Todo</title>
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
    <!-- Internal Library
    <link href="lib/ionic/css/ionic.css" rel="stylesheet">
    <script src="lib/ionic/js/ionic.bundle.js"></script>
    -->
    <!-- Cloud Library -->
    <link href="//code.ionicframework.com/nightly/css/ionic.css" rel="stylesheet">
    <script src="//code.ionicframework.com/nightly/js/ionic.bundle.js"></script>
    <!-- Needed for Cordova/PhoneGap (will be a 404 during development) -->
    <script src="cordova.js"></script>
  </head>
<body ng-app="app" ng-controller="TodoCtrl">
  <ion-side-menus>
  <!-- Center content -->
  <ion-side-menu-content>
    <ion-header-bar class="bar-dark">
          <button class="button button-icon" ng-click="toggleProjects()">
      <i class="icon ion-navicon"></i>
    </button>
      <h1 class="title">Todo</h1>
      <!-- New Task button-->
      <button class="button button-icon" ng-click="newTask()">
        <i class="icon ion-compose"></i>
      </button>
    </ion-header-bar>
    <ion-content>
      <!-- our list and list items -->
      <ion-list>
        <ion-item ng-repeat="task in activeProject.tasks">
          {{task.title}}
        </ion-item>
      </ion-list>
    </ion-content>
  </ion-side-menu-content>
  <!-- Left menu -->
  <ion-side-menu side="left">
    <ion-header-bar class="bar-dark">
      <h1 class="title">Projects</h1>
      <button class="button button-icon ion-plus" ng-click="newProject()">
      </button>
    </ion-header-bar>
    <ion-content scroll="false">
      <ion-list>
        <ion-item ng-repeat="project in projects" ng-click="selectProject(project, $index)" ng-class="{active: activeProject == project}">
          {{project.title}}
        </ion-item>
      </ion-list>
    </ion-content>
  </ion-side-menu>
 <script id="new-task.html" type="text/ng-template">
  <div class="modal">
    <!-- Modal header bar -->
    <ion-header-bar class="bar-secondary">
      <h1 class="title">New Task</h1>
      <button class="button button-clear button-positive" ng-click="closeNewTask()">Cancel</button>
    </ion-header-bar>
    <!-- Modal content area -->
    <ion-content>
      <form ng-submit="createTask(task)">
        <div class="list">
          <label class="item item-input">
            <input type="text" placeholder="What do you need to do?" ng-model="task.title">
          </label>
        </div>
        <div class="padding">
          <button type="submit" class="button button-block button-positive">Create Task</button>
        </div>
      </form>
    </ion-content>
  </div>
</script>  
   
  </ion-side-menus>
</body>
</html>

4.2) Modify JS codes to manage multiple projects


angular.module('app', ['ionic'])
.factory('Projects', function() {
  return {
     all: function() {
      var projectString = window.localStorage['projects'];
      if(projectString) {
        return angular.fromJson(projectString);
      }
      return [];
    },  
    save: function(projects) {
      window.localStorage['projects'] = angular.toJson(projects);
    },
    newProject: function(projectTitle) {
      // Add a new project
      return {
        title: projectTitle,
        tasks: []
      };
    },
    getLastActiveIndex: function() {
      return parseInt(window.localStorage['lastActiveProject']) || 0;
    },
    setLastActiveIndex: function(index) {
      window.localStorage['lastActiveProject'] = index;
    }
  }
})
.controller('TodoCtrl', function($scope, $ionicModal, $ionicSideMenuDelegate, $timeout, Projects ) {
   // A utility function for creating a new project
  // with the given projectTitle
  var createProject = function(projectTitle) {
    var newProject = Projects.newProject(projectTitle);
    $scope.projects.push(newProject);
    Projects.save($scope.projects);
    $scope.selectProject(newProject, $scope.projects.length-1);
  }
  // Load or initialize projects
  $scope.projects = Projects.all();

  // Grab the last active, or the first project
  $scope.activeProject = $scope.projects[Projects.getLastActiveIndex()];
  // Called to create a new project
  $scope.newProject = function() {
    var projectTitle = prompt('Project name');
    if(projectTitle) {
      createProject(projectTitle);
    }
  };  

  // Called to select the given project
  $scope.selectProject = function(project, index) {
    $scope.activeProject = project;
    Projects.setLastActiveIndex(index);
    $ionicSideMenuDelegate.toggleLeft(false);
  };

  // Create and load the Modal
  $ionicModal.fromTemplateUrl('new-task.html', function(modal) {
    $scope.taskModal = modal;
  }, {
    scope: $scope,
    animation: 'slide-in-up'
  });
  // Called when the form is submitted
  $scope.createTask = function(task) {
    $scope.activeProject.tasks.push({
      title: task.title
    });
    $scope.taskModal.hide();
    task.title = "";
  };
  // Open our new task modal
  $scope.newTask = function() {
    $scope.taskModal.show();
  };
  // Close the new task modal
  $scope.closeNewTask = function() {
    $scope.taskModal.hide();
  };
  // toggle Side Menu  
   $scope.toggleProjects = function() {
    $ionicSideMenuDelegate.toggleLeft();
  };
  // Try to create the first project, make sure to defer
  // this by using $timeout so everything is initialized
  // properly
  $timeout(function() {
    if($scope.projects.length == 0) {
      while(true) {
        var projectTitle = prompt('Your first project title:');
        if(projectTitle) {
          createProject(projectTitle);
          break;
        }
      }
    }
  }, 1000);
})
Name: 103CodePenIonicLocalStorageFactory03 (http://codepen.io/notarazi/pen/GrpPZM )
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