I am just trying to export data into excel like this
purchaseRequestService.prototype.export = function (arrID, arrID_A) {
var self = this;
var q = $q.defer();
var tasks = [];
if (arrID.length > 0) {
tasks.push(self.getDataForExportDashboard(arrID));
}
if (arrID_A.length > 0) {
tasks.push(self.getDataForExportDashboard_A(arrID_A));
}
//$q.all(tasks).then(function (res) {
// $q.all([self.getDataForExportDashboard(arrID),self.getDataForExportDashboard_A(arrID_A)]).then(function (res) {
$q.all([ self.getDataForExportDashboard(arrID), self.getDataForExportDashboard_A(arrID_A)]).then(function (res) {
var dt = [];
if (res.length > 1) {
dt.push(res[0][0].concat(res[1][0]));
dt.push(res[0][1].concat(res[1][1]));
} else {
dt.push(res[0][0]);
dt.push(res[0][1]);
}
var q = $q.defer();
ExcelService.exportDashboard(dt).then(function (result) {
q.resolve(result);
}, function (error, status) {
q.reject({
error: result,
status: status
});
});
});
return q.promise;
}
Now its kind of acting weird, sometimes the excel gets downloaded and sometimes not. When I open up debugger tools and stops the code at breakpoint, the download is successful. I am not able to understand what is happening.
Related
I have code like this
(function (app) {
app.controller('productListController', productListController)
productListController.$inject = ['$scope', 'apiService', 'notificationService', '$ngBootbox', '$filter'];
function productListController($scope, apiService, notificationService, $ngBootbox, $filter) {
$scope.products = [];
$scope.page = 0;
$scope.pagesCount = 0;
$scope.getProducts = getProducts;
$scope.keyword = '';
$scope.search = search;
$scope.deleteProduct = deleteProduct;
$scope.selectAll = selectAll;
$scope.deleteMultiple = deleteMultiple;
function deleteMultiple() {
var listId = [];
$.each($scope.selected, function (i, item) {
listId.push(item.ID);
});
var config = {
params: {
checkedProducts: JSON.stringify(listId)
}
}
apiService.del('/api/product/deletemulti', config, function (result) {
notificationService.displaySuccess('Deleted successfully ' + result.data + 'record(s).');
search();
}, function (error) {
notificationService.displayError('Can not delete product.');
});
}
$scope.isAll = false;
function selectAll() {
if ($scope.isAll === false) {
angular.forEach($scope.products, function (item) {
item.checked = true;
});
$scope.isAll = true;
} else {
angular.forEach($scope.products, function (item) {
item.checked = false;
});
$scope.isAll = false;
}
}
$scope.$watch("products", function (n, o) {
var checked = $filter("filter")(n, { checked: true });
if (checked.length) {
$scope.selected = checked;
$('#btnDelete').removeAttr('disabled');
} else {
$('#btnDelete').attr('disabled', 'disabled');
}
}, true);
function deleteProduct(id) {
$ngBootbox.confirm('Are you sure to detele?').then(function () {
var config = {
params: {
id: id
}
}
apiService.del('/api/product/delete', config, function () {
notificationService.displaySuccess('The product hase been deleted successfully!');
search();
}, function () {
notificationService.displayError('Can not delete product');
})
});
}
function search() {
getProducts();
}
function getProducts(page) {
page = page || 0;
var config = {
params: {
keyword: $scope.keyword,
page: page,
pageSize: 20
}
}
apiService.get('/api/product/getall', config, function (result) {
if (result.data.TotalCount == 0) {
notificationService.displayWarning('Can not find any record.');
}
$scope.products = result.data.Items;
$scope.page = result.data.Page;
$scope.pagesCount = result.data.TotalPages;
$scope.totalCount = result.data.TotalCount;
}, function () {
console.log('Load product failed.');
});
}
$scope.getProducts();
}
})(angular.module('THTCMS.products'));
So my problem is when i loading data the application take me some time to load data.
I need load data as soon as
Is the any solution for this?
Since you are loading data via api call, there will be a delay. To handle this delay, you should display a loading screen. Once the data is loaded, the loading screen gets hidden and your main screen is visible. You can achieve this using $http interceptors.
See : Showing Spinner GIF during $http request in angular
The api-call is almost certainly causing the delay. Data may be received slowly via the api-call so you could display any sort of loading text/image to notify the use that the data is being loaded.
If u want the data ready at the time when controller inits, u can add a resolve param and pass the api call as a $promise in the route configuration for this route.
I'm fairly new to both Ionic and Angular. I'm trying to write to a SQLite database and it's intermittently successful. When I do a for loop and insert records rapidly, some succeed and some fail (without apparent error). The query execution uses promises, so multiple queries may be trying to execute concurrently. It seems that this causes a synchronization issue in SQLite - or the SQLite plugin. I've tried opening a new DB connection with every execute(), reopening the existing connection on every execute(), and I've also tried opening a connection globally in app.js once and reusing that connection. They all seem to behave the same.
A custom 'dbQuery' function is used to build queries and is chainable. The idea is that any place in my app with access to the DB service can execute a query and expect the results to flow into an "out" variable like:
var my_query_results = [];
DB.begin().select("*","table1").execute(my_query_results).then(function() {
console.log("Query complete");
});
That much works, but the problem comes from writes:
var records = [
{id:1, name:"Bob"},
{id:2, name:"John"},
{id:3, name:"Jim"},
];
for (var i = 0; i < records.length; i++) {
var obj = records[i];
var result = [];
DB.begin().debug(true).insert("table1", "(id,name)", "("+obj.id+","+ obj.name+")").execute(result).then(function () {
console.log("Inserted record", JSON.stringify(obj));
});
}
Sometimes it fails without any logged or apparent error, sometimes it succeeds. If I perform the inserts slowly over time, it seems to work without issue.
app.js
var db;
angular.module('starter', ['ionic', 'starter.controllers', 'starter.services'])
.run(function ($ionicPlatform, $cordovaSQLite, appConfig, $q) {
$ionicPlatform.ready(function () {
db = $cordovaSQLite.openDB({
name: appConfig.sqlite_db,
location: appConfig.sqlite_db_location
});
dbQuery = function () {
this.bDebug = false;
this.query = "";
this.result = [];
this.params = [];
this.debug = function (value) {
this.bDebug = (value === true ? true : false);
return this;
};
this.rawQuery = function (query) {
this.query = query;
return this;
};
this.insert = function (table, fields, values) {
this.query = "INSERT INTO '" + table + "' (" + fields + ") VALUES (" + values + ")";
return this;
};
this.select = function (fields, table) {
this.query = "SELECT " + fields + " FROM " + table;
return this;
};
this.delete = function (query) {
this.query = "DELETE FROM " + query;
return this;
};
this.where = function (column, expression, value) {
expression = expression || "=";
this.query += " WHERE `" + column + "` " + expression + " ? ";
this.params[this.params.length] = value;
return this;
};
this.and = function (column, expression, value) {
expression = expression || "=";
this.query += " AND '" + column + "' " + expression + " ? ";
this.params[this.params.length] = value;
return this;
};
this.execute = function (out_var) {
var self = this;
this.result = out_var;
if (this.bDebug) {
console.log("Compiled query is", this.query);
}
var deferred = $q.defer();
db.open(function () {
console.log("Opened");
}, function () {
console.log("Failed");
});
//actually execute the query
$cordovaSQLite.execute(db, this.query, this.params).then(
function (res) {
for (var i = 0; i < res.rows.length; i++) {
self.result.push(res.rows.item(i));
console.log("Added row to set", JSON.stringify(res.rows.item(i)));
}
if (res.rows.length == 0 && self.bDebug === true) {
console.log("No results found ");
}
deferred.resolve();
}, function (err) {
console.error(JSON.stringify(err), this.query);
deferred.reject();
});
return deferred.promise;
}
services.js
.factory('DB', function ($ionicPlatform) {
return {
begin: function () {
return new dbQuery();
}
}
})
.factory('DbBootstrap', function ($cordovaSQLite, appConfig, $q, $state, DB) {
return {
wipe: function () {
DB.begin().rawQuery("DELETE FROM table1").execute().then(function () {
console.log("Purged records");
});
},
init: function () {
var result = []; //out variable
DB.begin().rawQuery("CREATE TABLE IF NOT EXISTS table1 (id integer primary key, name text)").execute(result).then(function () {
console.log("Schema create returned", JSON.stringify(result));
});
var records = [
{
id: 1, name:'Jim'
...
},
{
id: 2, name:'Bob'
...
},
{
id: 3, name:'John'
...
}
];
for (var i = 0; i < records.length; i++) {
var obj = records[i];
var result = [];
DB.begin().debug(true).insert("table1", "(id,name)", "(obj.id, obj.name).execute(result).then(function () {
console.log("Inserted record", JSON.stringify(obj));
});
}
}
})
I'm sure I'm missing something fundamental about angular, promises, and sqlite locking. If anyone has advice I'd really appreciate it.
I resolved this following the excellent advice here - Angular/Ionic and async SQLite - ensuring data factory initialised before return
The key issue being that I needed to wrap all my DB operations in promises and use them for orderly initialization and callbacks.
.factory('DB', function ($q, $cordovaSQLite, appConfig) {
//private variables
var db_;
// private methods - all return promises
var openDB_ = function (dbName, location) {
var q = $q.defer();
try {
db_ = $cordovaSQLite.openDB({
name: dbName,
location: location
});
q.resolve(db_);
} catch (e) {
q.reject("Exception thrown while opening DB " + JSON.stringify(e));
}
return q.promise;
};
var performQuery_ = function (query, params, out) {
var q = $q.defer();
params = params || [];
out = out || [];
//open the DB
openDB_(appConfig.sqlite_db, appConfig.sqlite_db_location)
.then(function (db) {
//then execute the query
$cordovaSQLite.execute(db, query, params).then(function (res) {
//then add the records to the out param
console.log("Query executed", JSON.stringify(query));
for (var i = 0; i < res.rows.length; i++) {
out.push(res.rows.item(i));
console.log("Added row to set", JSON.stringify(res.rows.item(i)));
}
if (res.rows.length == 0 && self.bDebug === true) {
console.log("No results found ");
}
}, function (err) {
console.log("Query failed", JSON.stringify(query));
q.reject();
});
db_.open(function () {
q.resolve("DB Opened")
}, function () {
q.reject("Failed to open DB");
});
}, function (err) {
console.log(JSON.stringify(err), this.query);
q.reject(err);
});
return q.promise;
};
// public methods
var execute = function (query, params, out) {
var q = $q.defer();
performQuery_(query, params, out).then(function () {
q.resolve([query, params]);
}, function (err) {
q.reject([query, params, err]);
});
return q.promise;
};
return {
execute: execute
};
})
I am using promises in my controller, and most of the times it works well. But sometimes it just loads forever and the WordPress.getAllCategories() function does not even get called.
This is my controller:
var mod = angular.module('app.controllers.home', []);
mod.controller('HomeCtrl', function ($scope, $q, $sce, $ionicPlatform, WordPress, Loading) {
console.log('HomeCtrl init');
$scope.$on('$ionicView.enter', function () {
Loading.show();
WordPress.getAllCategories()
.then(function (cats) {
console.info(angular.toJson(cats));
console.info('cats ^');
$q.all(cats.data.map(function (cat) {
var d = $q.defer();
console.error(cat.name);
WordPress.getLatestPostOfCategory(cat.id)
.then(function (post) {
console.debug(post.data.title.rendered);
WordPress.getMediaById(post.data.featured_media)
.then(function (media) {
console.log(media.data.source_url);
cat.firstPost = {};
cat.firstPost.id = post.data.id;
cat.firstPost.title = post.data.title.rendered;
cat.firstPost.content = post.data.content.rendered;
if (cat.firstPost.title.length > 50) {
cat.firstPost.title = cat.firstPost.title + '...';
}
if (cat.firstPost.content.length > 70) {
cat.firstPost.content = cat.firstPost.content.substr(0, 60) + '...';
}
cat.firstPost.thumbnail = media.data.source_url;
d.resolve(cat);
}, function (err) {
console.error(angular.toJson(err));
});
});
return d.promise;
})).then(function (cats) {
console.log('Loaded all articles and for main page.');
$scope.homeCategories = cats;
Loading.hide();
});
});
});
});
Is there anything wrong in my controller?
P.S. I also debug all the WordPress service functions and they work just fine, and provide the needed data.
EDIT:
Sometimes when it loads forever, I see the console.error(cat.name); debug message only logs 3 messages. But still proceeds to the next function...
This is how I solved it, by Bergi's advice.
Source for help: Promise anti pattern by Gorgi Kosev (bluebird)
var categories = [];
function sort() {
return WordPress.getAllCategories()
.then(function (cats) {
console.log('thens');
return $q.all(cats.data.map(function (cat) {
console.info('cat: ' + cat.name);
var category = {};
category.name = cat.name;
return WordPress.getLatestPostOfCategory(cat.id)
.then(function (post) {
var post = post.data;
category.post = {};
category.post.id = post.id;
category.post.title = post.title.rendered;
category.post.content = post.content.rendered;
console.log('ID: ' + category.post.id + ', title: ' + category.post.title);
return WordPress.getMediaById(post.featured_media);
}).then(function (media) {
category.post.thumbnail = media.data.source_url;
categories.push(category);
console.log('Pushed category "' + category.name + '"');
});
}));
}, function (err) {
console.error('ERR1');
console.error(angular.toJson(err));
});
}
sort()
.then(function () {
console.info('LOADED ALL CATEGORIES');
$scope.categories = categories;
}, function (err) {
console.error('err:' + angular.toJson(err));
});
When i check all lists in table, and press delete button, A DELETE SERVICE will be called.(Using AngularJS)
Problem is, i am using a loop, and on successful delete and unsuccessful delete, i am getting alert multiple times.(No. of selection times)
And its not working properly, if place it out of loop because its Async Task.
Here is the code,
This is a controller which initiates a service.
$scope.confirmAction = function() {
var costsToDelete = [];
angular.forEach($scope.objects, function(cost) {
if (cost.selected == true) {
costsToDelete.push(cost);
}
});
$scope.deleted = true;
//need to put confirmation dialog here.
//URL: specific to timesheet deletion. it will be prefixed with constant url
var delRequestUrl = URLs.costsUrl + '/';
deleteService.deleteRecord($scope.objects, costsToDelete, delRequestUrl);
};
This is a service.
.service('deleteService', ['dataService', 'Constant.urls', 'Constants','$q','alerts',function(dataService, URLs, Constants, $q, alerts) {
var deleteService = {};
deleteService.deleteRecord = function(records, listOfRecordsToDelete, url) {
while (listOfRecordsToDelete.length > 0) {
var recordToBeDeleted = listOfRecordsToDelete.pop();
var index = listOfRecordsToDelete.indexOf(recordToBeDeleted);
var delRequestUrl = url + recordToBeDeleted.id;
var result = dataService.deleteObject(delRequestUrl);
result.success(function(data) {
Alert('success');
records.splice(index, 1);
});
result.error(function(data, status, headers, config) {
dataService.handleError(status,data);
Alert('error');
});
}
};
return deleteService; }])
I need a result like: Alert should display only once.
If all items are successfully deleted, then success or failure message.
Why dont you just create a boolean bit var status= false;//default value to true inside success callback handler and false inside error callback handler,
so once all calls are complete based on this bit you can alert success or failure
Angular JS Code:
.service('deleteService', ['dataService', 'Constant.urls', 'Constants','$q','alerts',function(dataService, URLs, Constants, $q, alerts) {
var statusBit = false; // status tracker
var deleteService = {};
deleteService.deleteRecord = function(records, listOfRecordsToDelete, url) {
while (listOfRecordsToDelete.length > 0) {
var recordToBeDeleted = listOfRecordsToDelete.pop();
var index = listOfRecordsToDelete.indexOf(recordToBeDeleted);
var delRequestUrl = url + recordToBeDeleted.id;
var result = dataService.deleteObject(delRequestUrl);
result.success(function(data) {
// Alert('success');
statusBit = true;
records.splice(index, 1);
});
result.error(function(data, status, headers, config) {
dataService.handleError(status,data);
//Alert('error');
statusBit = false;
});
if(statusBit){
Alert('success'); //console.log('successfully deleted');
}
else {
Alert('error'); // console.log('error while deleting');
}
};
return deleteService; }])
.service('deleteService', ['dataService', 'Constant.urls', 'Constants','$q','alerts',function(dataService, URLs, Constants, $q, alerts) {
var deleteService = {};
deleteService.deleteRecord = function(records, listOfRecordsToDelete, url) {
var overallResult = true;
while (listOfRecordsToDelete.length > 0) {
var recordToBeDeleted = listOfRecordsToDelete.pop();
var index = listOfRecordsToDelete.indexOf(recordToBeDeleted);
var delRequestUrl = url + recordToBeDeleted.id;
var result = dataService.deleteObject(delRequestUrl);
result.success(function(data) {
records.splice(index, 1);
});
result.error(function(data, status, headers, config) {
dataService.handleError(status,data);
overallResult = false ;
});
}
};
return deleteService; }])
I have a simple query that I am struggling with:
.factory('Config', function($http, DB) {
var self = this;
self.setValue = function(key,value) {
console.log('setValue(value)', value);
return DB.query("UPDATE config SET value = '"+value+"' WHERE key = '"+key+"'")
.then(function(result){
return DB.fetchAll(result);
});
}
self.getValue = function(key) {
return DB.query("SELECT value FROM config WHERE key = '"+key+"'")
.then(function(result){
return DB.fetchOne(result);
});
};
return self;
})
with the following code in controller.js under the heading:
.factory('DB', function($q, DB_CONFIG) {
var self = this;
self.db = null;
(I took the init part of the function away for the sake of simplicity. Also DB is working well when inserting, getting and updating data.)
self.fetchOne = function(result) {
var output = null;
output = angular.copy(result.rows.item(0));
return output;
};
self.query = function (sql, bindings) {
bindings = typeof bindings !== 'undefined' ? bindings : [];
var deferred = $q.defer();
self.db.transaction(function (transaction) {
transaction.executeSql(sql, bindings, function (transaction, result) {
deferred.resolve(result);
}, function (transaction, error) {
deferred.reject(error);
});
});
return deferred.promise;
};
self.fetchAll = function (result) {
var output = [];
for (var i = 0; i < result.rows.length; i++) {
output.push(result.rows.item(i));
}
return output;
};
Called like so:
$scope.config.recordar = Config.getValue("recordar");
Doing a console.log returns:
I am struggling to access the value: "true" which is highlighted in BLUE in the above image.
Any leads?
$scope.config.recordar = Config.getValue("recordar");
Does not work (ala JS). It has to be called like so:
Config.getValue("recordar").then(function(data) {
$scope.config.recordar
});
I assume that you shall change your function declaration from :
self.setValue = function(key,value) {
console.log('setValue(value)', value);
return DB.query("UPDATE config SET value = '"+value+"' WHERE key = '"+key+"'")
.then(function(result){
return DB.fetchAll(result);
});
}
to
self.setValue = function(key,value) {
console.log('setValue(value)', value);
DB.query("UPDATE config SET value = '"+value+"' WHERE key = '"+key+"'")
.then(function(result){
return DB.fetchAll(result);
});
}
You will return the result of your promise, not your promise
I have changed "return DB..." to "DB..."