javascript - setState in none React component in a seperate file -


doing xhr requests backend, want requests in separate file webapiutils.js

../utils/webapiutils.js

var request = require('superagent'); var constants = require('../constants/constants');  var apiendpoints = constants.apiendpoints;  module.exports = {   loadpost: function() {     request.get(apiendpoints.user + '/' + 'ahmadajmi')       .set('accept', 'application/json')       .end(function(error, res) {         if (res) {           var json = json.parse(res.text);           return json;         }       });   } };

post.js

var react = require('react'); var webapiutils = require('../utils/webapiutils'); // other requires  var post = react.createclass({    getinitialstate: function() {     return {data: ''}   }   ,   componentdidmount: function() {     // want setstate     // this.setstate({data: webapiutils.loadpost()});     // instead of     this.loadpost();   }   ,   // method working fine here, want use 1 in `webapiutils.js` file   loadpost: function() {     request.get(apiendpoints.user + '/' + 'ahmadajmi')       .set('accept', 'application/json')       .end(function(error, res) {         if (res) {           var json = json.parse(res.text);           this.setstate({data: json})         }       }.bind(this));   },   render: function() {     return (       <div classname="post">       {this.state.data}       </div>     );   } });

the above code working fine, want move xhr requests webapiutils.js file. proper way connect them , update state.

as felix advised check: how return response asynchronous call?

did callback function , works

../utils/webapiutils.js

var request = require('superagent'); var constants = require('../constants/constants');  var apiendpoints = constants.apiendpoints;  module.exports = {   // add callback   loadpost: function(callback) {     request.get(apiendpoints.user + '/' + 'ahmadajmi')       .set('accept', 'application/json')       .end(function(error, res) {         if (res) {           var json = json.parse(res.text);           callback(json);         }       });   } };

post.js

var react = require('react'); var webapiutils = require('../utils/webapiutils');  var post = react.createclass({   getinitialstate: function() {     return {data: ''}   }   ,   componentdidmount: function() {     // execute loadpost , setstate based on returned data     webapiutils.loadpost(function(result) {       this.setstate({data: result})     }.bind(this));   }   ,   render: function() {     return (       <div classname="post">       {this.state.data}       </div>     );   } });

Comments

Post a Comment

Popular posts from this blog

html - Outlook 2010 Anchor (url/address/link) -

i'm trying link specific pdf page msoutlook'10 or msword'10, #page=... anchor particularly useful , works fine elsewhere. unfortunately when click [ctr-k] in outlook or winword, links re-formatted assuming unc path. pdf file located on shared drive. using "file:" prefix links open pdf in adobe reader (outside of browser), , "http:" open inside browser. issue seem need open in browser "file:" prefix in order anchor work. know anchors work inside browser. outlook uses windows/explorer default program (based on file extension) seems open in adobe reader neglecting anchor. is aware of solution, link specific page or bookmark of shared-pdf ms outlook and/or winword link? common references: mailermailer.com/...anchor-tags-html-emails campaignmonitor.com/...anchor-links-in-email-newsletters/ stackoverflow.com/...anchor-in-pdf-document
Read more

javascript - Why does running this loop 9 times take 100x longer than running it 8 times? -

consider code: test = function() { } t = new test(); (var = 0; < 8; i++) { result = t instanceof test; } if change number of iterations 8 9 , loop take 100 times longer complete in latest version of firefox (41.0.1). tested on 2 different pcs , magic limit 8. here jsperf test used: http://jsperf.com/instanceof-8-times-vs-9-times does have idea why might happen? seems specific instanceof . not happen if else object, example check property. note: filed bugzilla bug this. jan de mooij mozilla team has posted details in bugzilla thread . here's simplistic interpretation of highly technical answers: in i < 8 case, firefox smart enough hoist result = t instanceof test; statement out of loop (according tests, doesn't seem omit altogether). in i < 9 case, apparently doesn't optimization . why? reason not clear, related fact 9 iterations threshold above function considered "hot" enough run through jit compiler. i < 8 cas...
Read more

Getting gateway time-out Rails app with Nginx + Puma running on Digital Ocean -

following this guide setup app on digital ocean droplet, not working. site not loading , it's throwing: "gateway time-out". the puma server works, since ps aux | grep puma prints: root 15878 0.0 0.4 376832 2168 ? sl 12:50 0:00 puma 2.13.4 (unix:///var/www/myapp/shared/tmp/sockets/myapp-puma.sock) [20150930164940] root 15881 0.0 0.7 903676 3692 ? sl 12:50 0:06 puma: cluster worker 0: 15878 [20150930164940] root 24654 0.0 0.1 11748 916 pts/2 s+ 18:00 0:00 grep --color=auto puma my nginx config: user root; worker_processes 1; events { worker_connections 1024; } http { upstream puma { server unix:///var/www/myapp/shared/tmp/sockets/myapp-puma.sock; } server { listen 80; server_name myapp.com; root /var/www/myapp/current/public; access_log /var/www/myapp/current/log/access.log; error_log /...
Read more