I am new to extjs, and I try to integrate extjs 5 with django 1.7 on my localhost. I have set the backend and got the rest api work (at /api/), as at https://github.com/MaZderMind/django-vs-extjs , but when the index.html runs app.js, which displays the login page, it seems that:
- The controller file (Login.js) isn't loaded,
- the launch function is not executed.
In firebug I can see that it reads the function definition and then returns without executing it automatically (also, when defining controller it steps over like it is simple command, but on the require statement steps into the function that fetches them), hence the login page is not displayed. But the other js files (for authentication) are loaded, as I see in console. Do you have any ideas what is happening? The codes are:
- app.js
Ext.Loader.setConfig({enabled:true});
Ext.application({
// base-package of all classes
name: 'MyApp',
// url to load js-files from - adapted to django project
appFolder : 'static/static',
// required controllers
controllers: ['Login'],
// other required components
requires: [
'MyApp.helper.CrsfTokenHelper',
'MyApp.helper.PhantomStoreInserter'
],
// application launch method
launch: function () {
// save the scope
var app = this;
console.log('launched');
// ensure the user is logged in before showing her the main navigation with all our application goodies
app.getController('Login').ensureLoggedIn(function(userinfo) {
console.log('Login-Controller ensured that user', userinfo.username, 'is is currently loggeg in. Proceeding to navigation.')
// upate display of the navigation conteoller and show it
//app.getController('Navigation')
//.updateUserinfo(userinfo)
//.view.show();
console.log('Here should be loaded the view after the login page');
});
}
});- Login.js (controller)
Ext.define('MyApp.controller.Login', {
extend: 'Ext.app.Controller',
mixins: ['Ext.mixin.Observable'],
views: ['Login'],
// pointers into the view
refs: [
{ 'ref': 'userField', selector: '#user' },
{ 'ref': 'passField', selector: '#pass' },
{ 'ref': 'submitButton', selector: '#submit' }
],
// stored user information as received from the server
userinfo: null,
// controller initialisation
init: function() {
// save the scope
var loginController = this;
// create an instance of the view
var win = loginController.loginWindow = loginController.getView('Login').create();
this.control({
// register for the login-click
'#submit': {
click: function() {
// retrieve username & password from view
var username = this.getUserField().getValue(), password = this.getPassField().getValue();
// mask the form out
win.mask('Verifying…');
// process the login with the backend
loginController.performLogin(username, password, function(success) {
// the user was successfully authorized
if(success) {
// now request additional information on the user (name and such)
loginController.fetchLoginStatus(function(userinfo) {
// test if the server responded with data as expected
if(userinfo) {
// hide the login-window
win.hide();
// store received information locally
loginController.userinfo = userinfo;
// raise a event on the controller when finished
loginController.fireEvent('login', userinfo);
loginController.fireEvent('ready', userinfo);
}
// we did not receive valid data from the server
// this sould not fail, but if it does, just handle it like a failed login
else {
// disable the login on the form
win.unmask();
// set error-message on password-field
loginController.clearPasswordAndFocus().setPasswordError('Invalid Username or Password!');
}
})
}
// authorization was not successful
// unmask the form, show an error message and restart login process
else {
win.unmask();
loginController.clearPasswordAndFocus().showError('Invalid Username or Password!');
}
})
}
}
});
// register keyboard handler
this.nav = new Ext.KeyNav(win.getEl(), {
// enter key -> login-button click
enter: function() {
loginController.getSubmitButton().fireEvent('click')
}
});
},
// test if the user is logged in.
// if she is, call back immediatly. if she is not, show a login form
// delay the callback until she logged in successfully
ensureLoggedIn: function(callback) {
// save the scope
var loginController = this;
// test if the backend knows us
loginController.fetchLoginStatus(function(userinfo) {
// analyze if a user is logged in
if(userinfo) {
// callback, if she is
loginController.userinfo = userinfo;
loginController.fireEvent('ready', userinfo);
return callback(userinfo);
}
// no, we're not. show the login-window
console.log('no user logged in, showing login-window');
// login-testing and re-trying is handled by the handler set in the init-method
// it raises an event on the controller once it is finished
// we listen on this event and relay it to our callback - but only once
// -> the callback shouldn't be called multiple times
loginController.on('login', callback, {single: true});
// initiate login procedure by showing the login window
loginController.loginWindow.show();
loginController.clearForm();
});
},
// ask the backend if and which user is currently logged in
fetchLoginStatus: function(callback) {
console.info('requesting current userinfo from backend');
Ext.Ajax.request({
url: '/api/auth/user/',
success: function(response) {
// decode json-response
var userinfo = Ext.util.JSON.decode(response.responseText);
// request user permission list
Ext.Ajax.request({
url: '/api/auth/permissions/',
success: function(response) {
// decode json-response
userinfo.permissions = Ext.util.JSON.decode(response.responseText);
// callback with the decoded response
console.log('received userinfo:', userinfo);
callback(userinfo);
},
failure: function(response) {
// callback without info
console.log('received no permission list - nobody logged in');
callback();
}
});
},
failure: function(response) {
// callback without info
console.log('received no userinfo - nobody logged in');
callback();
}
});
},
// submit username & password to the backend
performLogin: function(username, password, callback) {
console.info('trying to log into backend with username=', username, 'password=', password.length, 'Chars');
// send login data via ajax to the server and callback with result
Ext.Ajax.request({
url: '/api/auth/login/',
method: 'POST',
params: {
'username': username,
'password': password
},
success: function(){
callback(true);
},
failure: function() {
callback(false);
}
});
},
// ask the backend to throw away our session which makes us logged out
performLogout: function(callback) {
console.info('trying to log out from backend');
// ensure userinfo is unset
this.userinfo = null;
Ext.Ajax.request({
url: '/api/auth/logout/',
method: 'GET',
success: function(){
callback(true);
},
failure: function() {
callback(false);
}
});
},
// shorthand to test iff userinfo is available
isLoggedIn: function() {
// null -> false, string -> true
return !!this.userinfo;
},
// shorthand to get the current username
getUserinfo: function() {
return this.userinfo;
},
// shorthand to get the current username
getUsername: function() {
return this.isLoggedIn() ? this.getUserinfo().username : null;
},
// shorthand to get the current username
getPermissions: function() {
return this.isLoggedIn() ? this.userinfo.permissions.user_permissions : [];
},
// shorthand to get the current username
isSuperuser: function() {
return this.isLoggedIn() ? this.userinfo.permissions.is_superuser : [];
},
hasPermission: function(permission) {
return this.isLoggedIn() && (this.isSuperuser() || this.getPermissions().indexOf(permission) !== -1)
},
// clears all form elements in the view
clearForm: function() {
this.loginWindow.unmask();
this.getPassField().setValue('').unsetActiveError();
this.getUserField().setValue('').unsetActiveError();
this.getUserField().focus();
return this;
},
// clears the password-field in the view and sets the typing-focus to it
clearPasswordAndFocus: function() {
this.getPassField().setValue('').focus();
return this;
},
// set an error-message on the password-fieldy
setPasswordError: function(msg) {
this.getPassField().setActiveErrors([msg]);
return this;
}
});- Login.js (view)
Ext.define('MyApp.view.Login', {
extend: 'Ext.window.Window',
renderTo: Ext.getBody(),
id: "loginBox",
title: 'Login',
width: 400,
layout: 'form',
bodyPadding: 5,
closable: false,
resizable: false,
draggable: false,
defaultFocus: 'user',
defaultType: 'textfield',
items: [{
itemId: 'user',
fieldLabel: 'Username',
allowBlank: false
},{
inputType: 'password',
fieldLabel: 'Password',
itemId: 'pass',
allowBlank: false
}],
buttons: [{
text: 'Login',
itemId: 'submit'
}]
});- console output:
GET localhost /static/static/helper/CrsfTokenHelper.js?_dc=1414444486439 200 OK 3ms ext-all-debug.js (line 1010)
GET localhost /static/static/helper/PhantomStoreInserter.js?_dc=1414444486439 200 OK 2ms ext-all-debug.js (line 1010)
Thanks anyway!
