I'm using angular with the ionic framework beta 1.
Here's my ng-repeat html:
<a href="{{item.url}}" class="item item-avatar" ng-repeat="item in restocks | reverse" ng-if="!$first">
<img src="https://server/sup-images/mobile/{{item.id}}.jpg">
<h2>{{item.name}}</h2>
<p>{{item.colors}}</p>
</a>
</div>
And here's my controllers.js, which fetches the data for the ng-repeat from a XHR.
angular.module('restocks', ['ionic'])
.service('APIservice', function($http) {
var kAPI = {};
API.Restocks = function() {
return $http({
method: 'GET',
url: 'https://myurl/api/restocks.php'
});
}
return restockAPI;
})
.filter('reverse', function() {
//converts json to JS array and reverses it
return function(input) {
var out = [];
for(i in input){
out.push(input[i]);
}
return out.reverse();
}
})
.controller('itemController', function($scope, APIservice) {
$scope.restocks = [];
$scope.sortorder = 'time';
$scope.doRefresh = function() {
$('#refresh').removeClass('ion-refresh');
$('#refresh').addClass('ion-refreshing');
restockAPIservice.Restocks().success(function (response) {
//Dig into the responde to get the relevant data
$scope.restocks = response;
$('#refresh').removeClass('ion-refreshing');
$('#refresh').addClass('ion-refresh');
});
}
$scope.doRefresh();
});
The data loads fine but I wish to implement a refresh button in my app that reloads the external json and updates the ng-repeat. When I call $scope.doRefresh(); more than once, I get this error in my JS console:
TypeError: Cannot call method 'querySelectorAll' of undefined
at cancelChildAnimations (http://localhost:8000/js/ionic.bundle.js:29151:22)
at Object.leave (http://localhost:8000/js/ionic.bundle.js:28716:11)
at ngRepeatAction (http://localhost:8000/js/ionic.bundle.js:26873:24)
at Object.$watchCollectionAction [as fn] (http://localhost:8000/js/ionic.bundle.js:19197:11)
at Scope.$digest (http://localhost:8000/js/ionic.bundle.js:19300:29)
at Scope.$apply (http://localhost:8000/js/ionic.bundle.js:19553:24)
at done (http://localhost:8000/js/ionic.bundle.js:15311:45)
at completeRequest (http://localhost:8000/js/ionic.bundle.js:15512:7)
at XMLHttpRequest.xhr.onreadystatechange (http://localhost:8000/js/ionic.bundle.js:15455:11) ionic.bundle.js:16905
It looks like it's related to a bug, as per:
https://github.com/driftyco/ionic/issues/727
Which was referenced from:
http://forum.ionicframework.com/t/show-hide-ionic-tab-based-on-angular-variable-cause-error-in-background/1563/9
I'm guessing it's pretty much the same issue.
Maybe try instead using angular.element(document.getElementById('refresh')) for a possible workaround (guessing).
Related
I'm trying to upload images from a Vue frontend via Illuminate/Http/Request to WinterCMS.
Vue finds the file and i can console.log the File object, but I'm unsure how to get this over the api. for example I've tried
public function saveImage(Request $req){
$images = $req->files('images');
}
which doesn't work, nor does
public function saveImage(Request $req){
$images = $req['images'];
}
I'm using a controller to handle my routes eg:
Route::post('/saveImage', 'Author\Project\Controllers\ProductControl#saveImage');
I've added an attachOne relation to the plugin as usual and my form has enctype="multipart/form-data"
I've had this problem before and got around it by converting images to base64 but this project will have quite a few images and I don't want to go down that route again.
Any suggestions greatly appreciated
You can send images as regular post and use regular $request->file('images') method in your Laravel controller.
You can use Javascript FormData object. For example;
<div>
<input type="file" #change="handleImages" multiple>
<button #click="uploadImages">Upload!</button>
</div>
data: () => ({
images: []
}),
methods: {
handleImages (event) {
this.images = event.target.files
},
uploadImages () {
const formData = new FormData();
for (const i of Object.keys(this.images)) {
formData.append('images', this.images[i])
}
axios.post('/saveImage', formData, {
}).then((res) => {
console.log(res)
})
}
}
countSubcategories() function returns [object Promise] where it should return row counts of mapped subcategories.
This code is in vue.js & Laravel, Any suggestions on this?
<div v-for="(cat,index) in cats.data" :key="cat.id">
{{ countSubcategories(cat.id) }} // Here subcategories row counts should be displayed.
</div>
<script>
export default {
data() {
return {
cats: {},
childcounts: ""
};
},
created() {
this.getCategories();
},
methods: {
countSubcategories(id) {
return axios
.get("/api/user-permission-child-count/" + `${id}`)
.then(response => {
this.childcounts = response.data;
return response.data;
});
},
getCategories(page) {
if (typeof page === "undefined") {
page = 1;
}
let url = helper.getFilterURL(this.filterpartnerForm);
axios
.get("/api/get-user-permission-categories?page=" + page + url)
.then(response => (this.cats = response.data));
}
}
};
</script>
As Aron stated in the previous answer as you are calling direct from the template the information is not ready when the template is rendered.
As far as I understood you need to run getCategories first so then you can fetch the rest of your data, right?
If that's the case I have a suggestion:
Send an array of cat ids to your back-end and there you could send back the list of subcategories you need, this and this one are good resources so read.
And instead of having 2 getCategories and countSubcategories you could "merge" then like this:
fetchCategoriesAndSubcategories(page) {
if (typeof page === "undefined") {
page = 1;
}
let url = helper.getFilterURL(this.filterpartnerForm);
axios
.get("/api/get-user-permission-categories?page=" + page + url)
.then(response => {
this.cats = response.data;
let catIds = this.cats.map(cat => (cat.id));
return this.countSubcategories(catIds) // dont forget to change your REST endpoint to manage receiving an array of ids
})
.then(response => {
this.childcounts = response.data
});
}
Promises allow you to return promises within and chain .then methods
So in your created() you could just call this.fetchCategoriesAndSubcategories passing the data you need. Also you can update your template by adding a v-if so it doesn't throw an error while the promise didn't finish loading. something like this:
<div v-if="childCounts" v-for="(subcategorie, index) in childCounts" :key="subcategorie.id">
{{ subcategorie }} // Here subcategories row counts should be displayed.
</div>
Hello!
Based on the provided information, it could be 2 things. First of all, you may try replacing:
return response.data;
with:
console.log(this.childcounts)
and look in the console if you have the correct information logged. If not, it may be the way you send the information from Laravel.
PS: More information may be needed to solve this. When are you triggering the 'countSubcategories' method?
I would do all the intial login in the component itself, and not call a function in template like that. It can drastically affect the performance of the app, since the function would be called on change detection. But first, you are getting [object Promise], since that is exactly what you return, a Promise.
So as already mentioned, I would do the login in the component and then display a property in template. So I suggest the following:
methods: {
countSubcategories(id) {
return axios.get("..." + id);
},
getCategories(page) {
if (typeof page === "undefined") {
page = 1;
}
// or use async await pattern
axios.get("...").then(response => {
this.cats = response.data;
// gather all nested requests and perform in parallel
const reqs = this.cats.map(y => this.countSubcategories(y.id));
axios.all(reqs).then(y => {
// merge data
this.cats = this.cats.map((item, i) => {
return {...item, count: y[i].data}
})
});
});
}
}
Now you can display {{cat.count}} in template.
Here's a sample SANDBOX with similar setup.
This is happen 'cause you're trying to render a information who doesn't comeback yet...
Try to change this method inside created, make it async and don't call directly your method on HTML. Them you can render your variable this.childcounts.
Im trying to get my json result into my react code
The code looks like the following
_getComments() {
const commentList = "AJAX JSON GOES HERE"
return commentList.map((comment) => {
return (
<Comment
author={comment.author}
body={comment.body}
avatarUrl={comment.avatarUrl}
key={comment.id} />);
});
}
How do i fetch AJAX into this?
First, to fetch the data using AJAX, you have a few options:
The Fetch API, which will work out of the box in some browsers (you can use a polyfill to get it working in other browsers as well). See this answer for an example implementation.
A library for data fetching (which generally work in all modern browsers). Facebook recommends the following:
superagent
reqwest
react-ajax
axios
request
Next, you need to use it somewhere in your React component. Where and how you do this will depend on your specific application and component, but generally I think there's two scenarios to consider:
Fetching initial data (e.g. a list of users).
Fetching data in response to some user interaction (e.g. clicking a
button to add more users).
Fetching initial data should be done in the life-cycle method componentDidMount(). From the React Docs:
var UserGist = React.createClass({
getInitialState: function() {
return {
username: '',
lastGistUrl: ''
};
},
componentDidMount: function() {
this.serverRequest = $.get(this.props.source, function (result) {
var lastGist = result[0];
this.setState({
username: lastGist.owner.login,
lastGistUrl: lastGist.html_url
});
}.bind(this));
},
componentWillUnmount: function() {
this.serverRequest.abort();
},
render: function() {
return (
<div>
{this.state.username}'s last gist is
<a href={this.state.lastGistUrl}>here</a>.
</div>
);
}
});
ReactDOM.render(
<UserGist source="https://api.github.com/users/octocat/gists" />,
mountNode
);
Here they use jQuery to fetch the data. While that works just fine, it's probably not a good idea to use such a big library (in terms of size) to perform such a small task.
Fetching data in response to e.g. an action can be done like this:
var UserGist = React.createClass({
getInitialState: function() {
return {
users: []
};
},
componentWillUnmount: function() {
this.serverRequest && this.serverRequest.abort();
},
fetchNewUser: function () {
this.serverRequest = $.get(this.props.source, function (result) {
var lastGist = result[0];
var users = this.state.users
users.push(lastGist.owner.login)
this.setState({ users });
}.bind(this));
},
render: function() {
return (
<div>
{this.state.users.map(user => <div>{user}</div>)}
<button onClick={this.fetchNewUser}>Get new user</button>
</div>
);
}
});
ReactDOM.render(
<UserGist source="https://api.github.com/users/octocat/gists" />,
mountNode
);
Lets take a look on the fetch API : https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch
Lets say we want to fetch a simple list into our component.
export default MyComponent extends React.Component {
constructor(props) {
super(props);
this.state = {
lst: []
};
this.fetchData = this.fetchData.bind(this);
}
fetchData() {
fetch('url')
.then((res) => {
return res.json();
})
.then((res) => {
this.setState({ lst: res });
});
}
}
We are fetching the data from the server, and we get the result from the service, we convert is to json, and then we set the result which will be the array in the state.
You can use jQuery.get or jQuery.ajax in componentDidMount:
import React from 'react';
export default React.createClass({
...
componentDidMount() {
$.get('your/url/here').done((loadedData) => {
this.setState({data: loadedData});
});
...
}
First I'd like to use fetchAPI now install of ajax like zepto's ajax,the render of reactjs is asyn,you can init a state in the constructor,then change the state by the data from the result of fetch.
I'm newbie of angularjs developing and i wrote this simple app, but don't understand how i can update view, after the model il loaded from ajax request on startup!
This code don't work when I add delay into photos.php, using:
sleep(3);
for simulate remote server delay! instead if search.php is speedy it work!!
<!doctype html>
<html ng-app="photoApp">
<head>
<title>Photo Gallery</title>
</head>
<body>
<div ng-view></div>
<script src="../angular.min.js"></script>
<script>
'use strict';
var photos = []; //model
var photoAppModule = angular.module('photoApp', []);
photoAppModule.config(function($routeProvider) {
$routeProvider.when('/photos', {
templateUrl: 'photo-list.html',
controller: 'listCtrl' });
$routeProvider.otherwise({redirectTo: '/photos'});
})
.run(function($http) {
$http.get('photos.php')//load model with delay
.success(function(json) {
photos = json; ///THE PROBLEM HERE!! if photos.php is slow DON'T update the view!
});
})
.controller('listCtrl', function($scope) {
$scope.photos = photos;
});
</script>
</body>
</html>
output of photos.php
[{"file": "cat.jpg", "description": "my cat in my house"},
{"file": "house.jpg", "description": "my house"},
{"file": "sky.jpg", "description": "sky over my house"}]
photo-list.html
<ul>
<li ng-repeat="photo in photos ">
<a href="#/photos/{{ $index }}">
<img ng-src="images/thumb/{{photo.file}}" alt="{{photo.description}}" />
</a>
</li>
</ul>
EDIT 1, Defer solution:
.run(function($http, $q) {
var deferred = $q.defer();
$http.get('photos.php')//load model with delay
.success(function(json) {
console.log(json);
photos = json; ///THE PROBLEM!! if photos.php is slow DON'T update the view!
deferred.resolve(json);//THE SOLUTION!
});
photos = deferred.promise;
})
EDIT 2, Service solution:
...
//require angular-resource.min.js
angular.module('photoApp.service', ['ngResource']).factory('photoList', function($resource) {
var Res = $resource('photos.php', {},
{
query: {method:'GET', params:{}, isArray:true}
});
return Res;
});
var photoAppModule = angular.module('photoApp', ['photoApp.service']);
...
.run(function($http, photoList) {
photos = photoList.query();
})
...
The short answer is this:
.controller('listCtrl', ['$scope', '$timeout', function($scope, $timeout) {
$timeout(function () {
$scope.photos = photos;
}, 0);
}]);
The long answer is: Please don't mix regular javascript and angular like this. Re-write your code so that angular knows what's going on at all times.
var photoAppModule = angular.module('photoApp', []);
photoAppModule.config(function($routeProvider) {
$routeProvider.when('/photos', {
templateUrl: 'photo-list.html',
controller: 'listCtrl'
});
$routeProvider.otherwise({redirectTo: '/photos'});
});
photoAppModule.controller('listCtrl', ['$scope', function($scope) {
$scope.photos = {};
$http.get('photos.php') // load model with delay
.success(function(json) {
$scope.photos = json; // No more problems
});
}]);
use broadcast
//service
var mydata = [];
this.update = function(){
$http.get(url).success(function(data){
mydata = data;
broadcastMe();
});
};
this.broadcastMe = function(){
$rootScope.$broadcast('mybroadcast');
};
//controller
$scope.$on('mybroadcast', function(){
$scope.mydata = service.mydata;
};
http://bresleveloper.blogspot.co.il/
EDIT:couple of days ago i've learned the best practice
http://bresleveloper.blogspot.co.il/2013/08/breslevelopers-angularjs-tutorial.html
I think you're better off using high level angular services for data transfer, also look into promises and services:
http://docs.angularjs.org/api/ng.$q
You need to bind an element in your view to a property (simple or object) of your $scope object. Once the $scope object is updated the view should be updated on its own. That is the beauty of AngularJS.
EDIT:
Please register your controller as
photoAppModule.controller('listCtrl', function($scope){
$scope.photos = photos;
});
If photos variable is not available, then you might have to create a service with the variable and inject in the controller.
It seems when loading a Razor partial view via ColorBox (not using an iframe), the JavaScript libraries do not initialize properly or it is an artifacte of the partial. If I include the libraries in the parent page, the JavaScript function runs inside the partial jsut fine. I don't see any errors coming from the browser when the library is in the partial, but it is not working. If I move the library (in this case fileuploader.js) outside of the partial and keep the function in the partial it works fine.
Example:
<script src="#Url.ContentArea("~/Scripts/plugins/ajaxUpload/fileuploader.js")" type="text/javascript"></script>
<div id="file-uploader">
<noscript>
<p>
Please enable JavaScript to use file uploader.</p>
</noscript>
</div>
<script>
$(function () {
var fileCount = 0;
var uploader = new qq.FileUploader({
element: document.getElementById('file-uploader'),
action: '/Admin/Avatar/AvatarUpload',
debug: true,
params: {
'userId': '#ViewBag.UserId'
},
onSubmit: function (id, fileName) {
fileCount++;
},
onComplete: function (id, fileName, responseJson) {
if (responseJson.success) {
if (createAvatar(responseJson.file, responseJson.imageId)) {
fileCount--;
} else {
fileCount--;
}
} else {
$("span.qq-upload-file:contains(" + fileName + ")").text(responseJson.errorMessage);
fileCount--;
}
if (fileCount == 0) {
.....
}
},
onCancel: function (id, fileName) {
fileCount--;
if (fileCount == 0) {
....
}
}
});
});
<script>
You may want to check whether there are duplicate references to the JavaScript libraries you are using (one in the parent and one in the partial).
This is a common issue and it will not raise any errors whatsoever, but will stop your JavaScript code from executing.
I think this is a time line problem.Before the "Partial View" load(or appending the div) JavaScript try to bind it and fail.So it cannot find a element which is in your Partial View document.I had a problem with like this with "ColorBox".I have found a solution for this problem.For example : When you call GET or POST method ,after the query put a control point like this .For example for binding "colorbox" :
function getMyPartial(partialname) {
var resultDiv = document.getElementById("content");
$.ajax({
type: "GET",
url: partialname,
async: false,
success: function (data) {
resultDiv.innerHTML = "";
resultDiv.innerHTML = data.toString();
}
});
var indd = 0; //This is Control Point
if (partialname == "YourPartialName") {
var yourelementinpartial= document.getElementById("example");
while (!yourelementinpartial) {
indd++;
}
$(".group4").colorbox({ rel: 'group4' }); //binding point
}
}
At the control point, if any of the element in your PartialView document has found it will bind.