Trying to refresh the table data without empty the table data before refresh in angular but it is not working properly. How to resolve this issue.
app.component.html:
<data-table [data]="tableData" [header]="tableHeader"></data-table>
<button (click)="refresh()">Refresh</button>
app.component.ts:
refresh(){
this.loadingicon=true;
//this.tableData=[]; ->avoiding this
//this.tableHeader = [];->avoiding this
this.tableData=[...this.tableData];
this.tableHeader = [...this.tableHeader];
if(this.tableData.length != 0){
this.loadingicon=false;
}
}
Use ChangeDetectorRef method for that.
Define in your constructor like
constructor(private ref: ChangeDetectorRef){ }
Use in your refresh function
refresh(){
this.loadingicon=true;
this.tableData=[...this.tableData];
this.tableHeader = [...this.tableHeader];
this.ref.markForCheck(); // use this method or
this.ref.detectChanges(); // use this method
if(this.tableData.length != 0){
this.loadingicon=false;
}
}
Please refer this link for more details.
Related
I have succesfully rendered my own component as the cellEditor and would like and on-leave I would like it to try to validate the value and prevent the closing if it fails.
If I look at this then https://www.ag-grid.com/javascript-grid-cell-editing/#editing-api there's cancelable callback functions for editing. But in this callback function is there a way to access the current instantiated component? I would think that would be the easiest way to handle this.
I'm using vee-validate so the validation function is async, just to keep in mind.
Use Full row editing.
Create a global variable like
var problemRow = -1;
Then Subscribe to this events:
onRowEditingStarted: function (event) {
if (problemRow!=-1 && event.rowIndex!=problemRow) {
gridOptions.api.stopEditing();
gridOptions.api.startEditingCell({
rowIndex: problemRow,
colKey: 'the column you want to focus',
});
}
},
onRowEditingStopped: function (event) {
if (problemRow==-1) {
if (event.data.firstName != "your validation") {
problemRow = event.rowIndex
gridOptions.api.startEditingCell({
rowIndex: problemRow,
colKey: 'the column you want to focus',
});
}
}
if (problemRow == event.rowIndex) {
if (event.data.firstName != "your validation") {
problemRow = event.rowIndex
gridOptions.api.startEditingCell({
rowIndex: problemRow,
colKey: 'the column you want to focus',
});
}
else{
problemRow=-1;
}
}
},
I had a similar issue - albeit in AngularJS and the non-Angular mode for ag-grid - I needed to prevent the navigation when the cell editor didn't pass validation.
The documentation is not very detailed, so in the end I added a custom cell editor with a form wrapped around the input field (to handle the niceties such as red highlighting etc), and then used Angular JS validation. That got me so far, but the crucial part was trying to prevent the user tabbing out or away when the value was invalid so the user could at least fix the issue.
I did this by adding a value parser when adding the cell, and then within that if the value was invalid according to various rules, throw an exception. Not ideal, I know - but it does prevent ag-grid from trying to move away from the cell.
I tried loads of approaches to solving this - using the tabToNextCell events, suppressKeyboardEvent, navigateToNextCell, onCellEditingStopped - to name a few - this was the only thing that got it working correctly.
Here's my value parser, for what it's worth:
var codeParser = function (args) {
var cellEditor = _controller.currentCellEditor.children['codeValue'];
var paycodeId = +args.colDef.field;
var paycodeInfo = _controller.paycodes.filter(function (f) { return f.id === paycodeId; })[0];
// Check against any mask
if (paycodeInfo && paycodeInfo.mask) {
var reg = new RegExp("^" + paycodeInfo.mask + '$');
var match = args.newValue.match(reg);
if (!match) {
$mdToast.show($mdToast.simple().textContent('Invalid value - does not match paycode format.').position('top right').toastClass('errorToast'))
.then(function(r) {
_controller.currentCellEditor.children['codeValue'].focus();
});
throw 'Invalid value - does not match paycode format.';
}
}
return true;
};
The _controller.currentCellEditor value is set during the init of the cell editor component. I do this so I can then refocus the control after the error has been shown in the toast:
CodeValueEditor.prototype.init = function (params) {
var form = document.createElement('form');
form.setAttribute('id', 'mainForm');
form.setAttribute('name', 'mainForm');
var input = document.createElement('input');
input.classList.add('ag-cell-edit-input');
input.classList.add('paycode-editor');
input.setAttribute('name', 'codeValue');
input.setAttribute('id', 'codeValue');
input.tabIndex = "0";
input.value = params.value;
if (params.mask) {
input.setAttribute('data-mask', params.mask);
input.setAttribute('ng-pattern','/^' + params.mask + '$/');
input.setAttribute('ng-class',"{'pattern-error': mainForm.codeValue.$error.pattern}");
input.setAttribute('ng-model', 'ctl.currentValue');
}
form.appendChild(input);
this.container = form;
$compile(this.container)($scope);
_controller.currentValue = null;
// This is crucial - we can then reference the container in
// the parser later on to refocus the control
_controller.currentCellEditor = this.container;
$scope.$digest();
};
And then cleared in the grid options onCellEditingStopped event:
onCellEditingStopped: function (event) {
$scope.$apply(function() {
_controller.currentCellEditor = null;
});
},
I realise it's not specifically for your components (Vue.js) but hopefully it'll help someone else. If anyone has done it a better way, I'm all ears as I don't like throwing the unnecessary exception!
My datatables is declared in this way:
"processing": true
,"serverSide": true
,"stateSave":true
,"stateDuration": 60*60*24
,"ajax":{
"url":"/approval/search.json"
,"type":"post"
}
My code to clear state:
if(page doesn't exist){
table.state.clear();
table.draw()
}
I don't know how to tell if page doesn't exist. I've tried table.page.info() but the data it shows is the same whether the page has info or not.
After SO MUCH trial and error I finally succeeded with this:
,"fnDrawCallback":function(){
if(table.row().data()===undefined){
table.state.clear();
location.href=url
}
}
Updated answer for newer versions of datatables:
drawCallback: function (settings) {
let api = this.api();
// fix pagination if saved page is empty
if (api.page() > 0 && api.rows({page: 'current'}).count() === 0) {
api.page('previous').state.save();
location.reload();
}
}
This will set the state to the previous page if the current does not exist, and reload the page.
I may have used the previous answer and alter it. It work perfectly for me :
drawCallback: function (settings) {
let api = this.api();
var info = api.page.info();
if (info.pages!=0 && (api.page() > 0 && api.rows({page: 'current'}).count() === 0)) {
api.page('first').state.save();
window.location.reload();
}
}
Is it possible to change which html-template is being used dynamically from the view-model?
E.g. based on data downloaded from a server, I'd like to choose different templates (or some other logic in the view-model)
Update
Based on the answer below suggesting getViewStrategy, here's a complete sample:
export class MultiView {
gender : string
getViewStrategy() {
if(this.gender == 'boy')
return './multi-view-blue.html'
else
return './multi-view-pink.html'
}
// when view is made visible (e.g. by using the router)
activate() {
this.gender = Math.random()>0.5 ? "boy" : "girl"
}
}
If you want to do this on a single view model implement the getViewStrategy function.
export class MyView{
getViewStrategy(){
return 'my-other-view.html';
}
}
Refer to the documentation under App Configuration and Startup, titled Configuring the View Location Convention. Here's and excerpt:
To do this, during bootstrap, import the ViewLocator and replace its convertOriginToViewUrl method with your own implementation.
It includes a code example you may follow as well.
As an alternative, you could look into the aurelia-compiler library module.
NOTE: This library will be refactored and parts of it will be included into the core. In the meantime it can still be used but please be aware of this breaking change.
It contains a function called swapView() that looks like it may do what you want. An example of it being used is in the aurelia-dialog library module. Hopefully you can glean some useful information from that and find a way to make it work.
Write a view-model that takes data from server and binding variables of class.
export class MyClass{
constructor(){
this.red = false;
this.green = false;
this.yellow = false;
this.serverValue = "";
}
activate(){
return this.bindingFunction();
}
bindingFunction(){
if(this.serverValue == 'red') { this.red = true; }
else if(this.serverValue == 'green') { this.green = true; }
else this.yellow = true;
}
}
Write the view as a whole, with show.bind, and bind those with view-model.
<template>
<div show.bind='red'> /* your elements */ </div>
<div show.bind='green'> /* your elements */ </div>
<div show.bind='yellow'> /* your elements */ </div>
</template>
I have a large Dijit-based form with many Dijits in collapsible TitlePanes.
When the form validates, any invalid items hidden inside closed TitlePanes (obviously) cannot be seen. So it appears as though the form is just dead and won't submit, though, unbeknownst to the user, there's actually an error hidden in a closed TitlePane which is preventing the form processing.
What's the solution here? Is there an easy way to simply open all TitlePanes containing Dijits that are in an error state?
If validation is done by following, it will work:-
function validateForm() {
var myform = dijit.byId("myform");
myform.connectChildren();
var isValid = myform.validate();
var errorFields = dojo.query(".dijitError");
errorFields.forEach(fieldnode){
var titlePane = getParentTitlePane(fieldnode);
//write a method getParentTitlePane to find the pane to which this field belongs
if(titlePane) {
titlePane.set('open',true);
}
}
return isValid;
}
function getParentTitlePane(fieldnode) {
var titlePane;
//dijitTitlePane is the class of TitlePane widget
while(fieldnode && fieldnode.className!="dijitTitlePane") {
fieldnode= fieldnode.parentNode;
}
if(fieldnode) {
mynode = dijit.getEnclosingWidget(fieldnode);
}
return titlePane;
}
Lets say if the following is the HTML and we call the above validateForm on submit of form.
<form id="myform" data-dojo-type="dijit/form/Form" onSubmit="validateForm();">
......
</form>
Here's what I ended up doing (I'm not great with Javascript, so this might sucked, but it works -- suggestions for improvement are appreciated):
function openTitlePanes(form) {
// Iterate through the child widgets of the form
dijit.registry.findWidgets(document.getElementById(form.id)).forEach(function(item) {
// Is this a title pane?
if (item.baseClass == 'dijitTitlePane') {
// Iterate the children of this title pane
dijit.registry.findWidgets(document.getElementById(item.id)).forEach(function(child) {
// Does this child have a validator, and -- if so -- is it valid?
if (!(typeof child.isValid === 'undefined') && !child.isValid()) {
// It's not valid, make sure the title pane is open
item.set('open', true);
}
});
}
});
}
Im creating a site who works with ajaxRequest, when I click a link, it will load using ajaxRequest. When I load for example user/login UserController actionLogin, I renderPartial the view with processOUtput to true so the js needed inside that view will be generated, however if I have clientScriptRegister inside that view with events, how can I avoid to generate the scriptRegistered twice or multiple depending on the ajaxRequest? I have tried Yii::app()->clientScript->isSCriptRegistered('scriptId') to check if the script is already registered but it seems that if you used ajaxRequest, the result is always false because it will only be true after the render is finished.
Controller code
if (Yii::app()->request->isAjaxRequest)
{
$this->renderPartial('view',array('model'=>$model),false,true);
}
View Code
if (!Yii::app()->clientScript->isScriptregistered("view-script"))
Yii::app()->clientScript->registerScript("view-script","
$('.link').live('click',function(){
alert('test');
})
");
If I request for the controller for the first time, it works perfectly (alert 1 time) but if I request again for that same controller without refreshing my page and just using ajaxRequest, the alert will output twice if you click it (because it keeps on generating eventhough you already registered it once)
This is the same if you have CActiveForm inside the view with jquery functionality.. the corescript yiiactiveform will be called everytime you renderPartial.
To avoid including core scripts twice
If your scripts have already been included through an earlier request, use this to avoid including them again:
// For jQuery core, Yii switches between the human-readable and minified
// versions based on DEBUG status; so make sure to catch both of them
Yii::app()->clientScript->scriptMap['jquery.js'] = false;
Yii::app()->clientScript->scriptMap['jquery.min.js'] = false;
If you have views that are being rendered both independently and as HTML fragments to be included with AJAX, you can wrap this inside if (Yii::app()->request->isAjaxRequest) to cover all bases.
To avoid including jQuery scripts twice (JS solution)
There's also the possibility of preventing scripts from being included twice on the client side. This is not directly supported and slightly more cumbersome, but in practice it works fine and it does not require you to know on the server side what's going on at the client side (i.e. which scripts have been already included).
The idea is to get the HTML from the server and simply strip out the <script> tags with regular expression replace. The important point is you can detect if jQuery core scripts and plugins have already been loaded (because they create $ or properties on it) and do this conditionally:
function stripExistingScripts(html) {
var map = {
"jquery.js": "$",
"jquery.min.js": "$",
"jquery-ui.min.js": "$.ui",
"jquery.yiiactiveform.js": "$.fn.yiiactiveform",
"jquery.yiigridview.js": "$.fn.yiiGridView",
"jquery.ba-bbq.js": "$.bbq"
};
for (var scriptName in map) {
var target = map[scriptName];
if (isDefined(target)) {
var regexp = new RegExp('<script.*src=".*' +
scriptName.replace('.', '\\.') +
'".*</script>', 'i');
html = html.replace(regexp, '');
}
}
return html;
}
There's a map of filenames and objects that will have been defined if the corresponding script has already been included; pass your incoming HTML through this function and it will check for and remove <script> tags that correspond to previously loaded scripts.
The helper function isDefined is this:
function isDefined(path) {
var target = window;
var parts = path.split('.');
while(parts.length) {
var branch = parts.shift();
if (typeof target[branch] === 'undefined') {
return false;
}
target = target[branch];
}
return true;
}
To avoid attaching event handlers twice
You can simply use a Javascript object to remember if you have already attached the handler; if yes, do not attach it again. For example (view code):
Yii::app()->clientScript->registerScript("view-script","
window.myCustomState = window.myCustomState || {}; // initialize if not exists
if (!window.myCustomState.liveClickHandlerAttached) {
window.myCustomState.liveClickHandlerAttached = true;
$('.link').live('click',function(){
alert('test');
})
}
");
The cleanest way is to override beforeAction(), to avoid any duplicated core script:
class Controller extends CController {
protected function beforeAction($action) {
if( Yii::app()->request->isAjaxRequest ) {
Yii::app()->clientScript->scriptMap['jquery.js'] = false;
Yii::app()->clientScript->scriptMap['jquery-2.0.0.js'] = false;
Yii::app()->clientScript->scriptMap['anything.js'] = false;
}
return parent::beforeAction($action);
}
}
Note that you have to put the exact js file name, without the path.
To avoid including script files twice, try this extension: http://www.yiiframework.com/extension/nlsclientscript/
To avoid attaching event handlers twice, see Jons answer: https://stackoverflow.com/a/10188538/729324