javascript - How store AngularJS $resource calls in an array to execute all together after? -


i'm working angularjs 1.5 (i'm beginner js) in user profile view user can change lot of things in data.

in view data split in several sections , save of data means several calls server ( due design of app). problem found when user modify data maybe modify part of , when push save button don't want call methods, necessary methods.

i've programed way detect changes in data blocks when user push save button, controller make call , in other cases 2 or three. problem calls (made $resource library) executed asyncronously , can control better.

i next: store calls in list or array wihout execute them , after execute @ same time (more or less). if of fails show error message user (only generic error message), internally log call failed, , in same way show (and one) success message when calls have ended success ( , not message per success call).

i don't know how this, mates me maybe need use $q angularjs service this, or store promises $resource have execute after (i've trying without success) or work promises in js.

anyone can give me idea?

finally resolved problem using $q. @ first wanted store calls without execute them (i thought better) can check stored results of calls enought aim. so, skeleton of solution i've been done:

at beginning of controller

var promises = [];

in places need make controlled call inside of save user data function:

var deferred = $q.defer();  var promise = vm.teacher.$update(     function () { // success         deferred.resolve('success updating teacher.');     },     function (error) { // fail         deferred.reject('error updating teacher, error: ' + error)     }); promises.push(deferred.promise) }  ...  ... vm.otheritems.$update ...   ...

and @ end of function, this:

$q.all(promises).then(      function(value){         console.log('resolving promises, success,  value: ')         console.log(value);         toastservice.showtoast('success updating teacher.');          // deleted old promises next iteration (if exists)                         promises = [];      },function(reason){         console.log('resolving promises, fail, reason: ')         console.log(reason);         toastservice.showtoast('fail updating teacher.');     } )

thanks help!


Comments

Post a Comment

Popular posts from this blog

sql server - Cannot query correctly (MSSQL - PHP - JSON) -

i have little problem on project. , turns out query result returns nothing when value of first name or last name has 'ñ' in it. here's code config.php: <?php ini_set('mssql.charset', 'utf-8'); header('content-type: text/html; charset=utf-8'); $servername = "192.168.1.21"; /* ip add of db server */ $connection = array("database" => "db", "uid" => "?", "pwd" => "***"); $conn = sqlsrv_connect($servername, $connection); if(!$conn){ echo "connection not established."; die(print_r(sqlsrv_errors(), true)); } ?> myquery: $idnumber = $_post["idnum"]; $response = array(); $query2 = "select clname, cfname, cmname, cqualifier student cidno = '$idnumber'"; try{ $stmt2 = sqlsrv_query($conn, $query2); } catch(pdoexeption $ex){ $response["success"] = 0; $response["message"] = "d...
Read more

php - trouble displaying mysqli database results in correct order -

i have table in database stores events , date expire. want display events on website display current events first expired events after? i have tried following sql $sql = "select noticeid, notice, noticedesc, noticeimg, noticedate, expirydate tbl_notices group noticeid ,expired order expirydate asc"; but returns expired results first due expirydate being ordered asc in query. my tbl_notice structure looks this noticeid => int(4) notice => varchar(100) noticedesc => text noticedate => timestamp noticeimg => varchar(40) expirydate => datetime expired => int(1) 0 current or 1 expired my php code is $sql = "select noticeid, notice, noticedesc, noticeimg, noticedate, expirydate tbl_notices group noticeid ,expired order expirydate asc"; $result = mysqli_query($conn,$sql); if ($result->num_rows > 0) { // output data of each row while($row = $result->fetch_assoc()) { ...
Read more

C++ Linked List -

i trying create linked list download txt file , use linked list handle file line line. when handling downloaded linked list operations performed on such text editor would. encountering problems however. seems "node(string value)" section of code has wrong though original node() declaration no arguments passes. unable figure out quite is. node.h class node { public: node(); node(string value); void setnext(node *nextnode); // allows user set "next" pointer of node points friend class linkedlist; private: string data; // data box node* next; // pointer box }; node.cpp # include <string> # include "node.h" using namespace std; node::node() { data = ""; next = null; } node::node(string value) { data = value; next = null; } void node::setnext(node *nextnode) // allows user set "next" pointer of node points { this->next = nextnode; } your #include <string> ...
Read more