Integrating System Roles API in Open Event Frontend

The Eventyay system supports different system roles and allows to set panel permissions for every role. The system supports two inbuilt roles namely Admin and Super Admin. The users having access to permissions panel can create new custom system roles and define set of panel permissions for them. Also the users are provided with the option of editing and deleting any system role except the two inbuilt system roles. The feature is implemented using custom-system-roles and panel-permissions API on the server.

Adding route for system-roles

The route for custom-system-system roles is defined which contains a model returning user permissions, system roles and the panel permissions. The model is defined as async so that the execution is paused while fetching the data from the store by adding the await expression.

async model() {
 return {
   userPermissions  : await this.get('store').findAll('user-permission'),
   systemRoles      : await this.get('store').findAll('custom-system-role'),
   panelPermissions : await this.get('store').findAll('panel-permission')
 };
},

The route created above gets all the data for user permissions, system-roles and panel permissions which is later used by the template for rendering of data.

Adding model for system-roles and panel-permissions

The model for system-roles is created which contains the ‘name’ attribute of type string and a relationship with panel permissions. Every system role can have multiple panel permissions, therefore a hasMany relationship is defined in the model.

export default ModelBase.extend({
 name: attr('string'),

 panelPermissions: hasMany('panelPermission')
});

Similarly, the model for panel-permissions is added to the models directory. The defined model contains ‘panelName’ as an attribute of type string and a bool value canAccess, defining if the panel is accessible by any role or not.

export default ModelBase.extend({
 panelName : attr('string'),
 canAccess : attr('boolean')
});

Defining controller for system-roles

The controller for system-roles is defined in the controllers/admin/permissions directory. The action for adding, updating and deleting system roles are defined in the controller. While adding the system roles, all the panels are fetched and checked which panel permissions are selected by the admin. A special property namely ‘isChecked’ is added to every panel permission checkbox which toggles on change. If the property is set true the corresponding panel is added to the panel permissions relationship of corresponding role. If no panel is selected, an error message to select atleast one panel is displayed.

deleteSystemRole(role) {
 this.set('isLoading', true);
 role.destroyRecord()
  ...
  // Notify success or failure
},
addSystemRole() {
 this.set('isLoading', true);
 let panels = this.get('panelPermissions');

 panels.forEach(panel => {
   if (panel.isChecked) {
     this.get('role.panelPermissions').addObject(panel);
   } else {
     this.get('role.panelPermissions').removeObject(panel);
   }
 });
 if (!this.get('role.panelPermissions').length) {
  // Notification to select atleast one panel
 } else {
   this.get('role').save()
    // Notify success or failure
 }
},
updatePermissions() {
 this.set('isLoading', true);
 this.get('model.userPermissions').save()
  ...
  // Notify success or failure
}

The actions defined above in the controller can be used in template by passing the appropriate parameters if required. The addSystemRole action makes a POST request to server for creating a new system role, the updatePermissions action makes a PATCH request for updating the existing system role and the deleteSystemRole action makes a delete request to the server for deleting the role.

Adding data to template for system-roles

The data obtained from the model defined in route is rendered in the template for system-roles. A loop for showing all system roles is added to the template with the name attribute containing the name of system role and another loop is added to display the panel permissions for the corresponding role.

{{#each model.systemRoles as |role|}}
 <tr>
   <td>{{role.name}}</td>
   <td>
     <div class="ui bulleted list">
       {{#each role.panelPermissions as |permission|}}
         <div class="item">{{concat permission.panelName ' panel'}}</div>
       {{/each}}
     </div>
   </td>
   <td>
    // Buttons for editing and deleting roles
   </td>
 </tr>
{{/each}}

A modal is to the component for creating and editing system roles. The data from this template is passed to the modal where the existing permissions are already checked and can be modified by the admins.

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Integrating Event Roles API in Open Event Frontend

The Eventyay system supports different type of roles for an event like Attendee, organizer, co-organizer, track-organizer, moderator and the registrar. Every role has certain set of permissions such as Create, Read, Update, Delete. The Admin of the system is allowed to change the permissions for any role. The interface for updating the even role permissions was already available on the server but was not integrated on the frontend. The system is now integrated with the API and allows admin to change event role permission for any role.

Adding model for event role permissions

The model for event role permissions is added to the models directory. The model contains the attributes like canDelete, canUpdate, canCreate, canRead and the relationship with event role and the service.

export default ModelBase.extend({
 canDelete : attr('boolean'),
 canUpdate : attr('boolean'),
 canCreate : attr('boolean'),
 canRead   : attr('boolean'),

 role        : belongsTo('role'),
 service     : belongsTo('service'),
 serviceName : computed.alias('service.name')
});

The above defined model ensures that every permission belongs to a role and service. An alias is declared in the model using the computed property which is later used in the controller to sort the permissions according to service name in lexicographical order.

Adding route for event roles

The route for event role is created which contains model returning an object containing the list of roles, services and permissions. The model is defined as async so that the execution is paused while fetching the data from the store by adding the await expression.

export default Route.extend({
 titleToken() {
   return this.get('l10n').t('Event Roles');
 },
 async model() {
   return {
     roles       : ['Attendee', 'Co-organizer', 'Moderator', 'Organizer', 'Track Organizer', 'Registrar'],
     services    : await this.get('store').query('service', {}),
     permissions : await this.get('store').query('event-role-permission', { 'page[size]': 30 })
   };
 }
});

The route created above queries the data for roles, services and permissions which is later used by the template for rendering of the data obtained.

Adding controller for event roles

The controller for event roles is added to the controllers/admin/permissions directory. The computed property is used to sort the services obtained from model lexicographically and the permissions are sorted by the help of alias created in the model.

services: computed('model', function() {
 return this.get('model.services').sortBy('name');
}),
sortDefinition : ['serviceName'],
permissions    : computed.sort('model.permissions', 'sortDefinition'),
actions        : {
 updatePermissions() {
   this.set('isLoading', true);
   this.get('model.permissions').save()
     .then(() => {
       // Notify success and add Error handler
      }
   }
}

An action named updatePermissions is defined which is triggered when the admin updates and saves the permissions for any role where a PATCH request is made to the server in order to update the permissions.

Rendering data in the template

The data obtained from the model is manipulated in the controller and is rendered to the table in the event-roles template. Every role is fetched from the model and added to the template, all the permissions in sorted order are obtained from the controller and matched with the current role name. The relationship of permissions with role is used to check if its title is equal to the the current role. The permissions are updated accordingly, if the role title is equal to current role.

<tbody>
 {{#each model.roles as |role|}}
   <tr>
     <td>{{role}}</td>
     {{#each permissions as |permission|}}
       {{#if (eq permission.role.titleName role)}}
         <td>
           {{ui-checkbox label=(t 'Create') checked=permission.canCreate onChange=(action (mut permission.canCreate))}}
           <br>
           {{ui-checkbox label=(t 'Read') checked=permission.canRead onChange=(action (mut permission.canRead))}}
           <br>
           {{ui-checkbox label=(t 'Update') checked=permission.canUpdate onChange=(action (mut permission.canUpdate))}}
           <br>
           {{ui-checkbox label=(t 'Delete') checked=permission.canDelete onChange=(action (mut permission.canDelete))}}
         </td>
       {{/if}}
     {{/each}}
   </tr>
 {{/each}}
</tbody>

After rendering the data as shown above, the checkbox for permissions of different services for different roles are checked or unchecked depending upon the bool value of corresponding permission. The admin can update the permissions by checking or unchecking the checkbox and saving the changes made.

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Adding Speakers Page in Open Event Frontend

Open Event Frontend earlier displayed all the speakers of an event on the main info page only, now a separate route for speakers is created and a separate page is added to display the speakers of an event. The design and layout of speakers page is kept similar to that on Open Event Web app. The info page only shows the featured speakers for an event and the complete list of speakers with additional information is present on speakers route.

Getting the event speakers data

The event data is obtained from the public model and a query is made for the speakers to get the required data. The speakers are fetched only for the sessions which are accepted, this is done by applying a filter while the query is made.

async model() {
 const eventDetails = this.modelFor('public');
 return {
   event    : eventDetails,
   speakers : await eventDetails.query('speakers', {
     filter: [
       {
         name : 'sessions',
         op   : 'any',
         val  : {
           name : 'state',
           op   : 'eq',
           val  : 'accepted'
         }
       }
     ]
   })
 };
}

Adding template for displaying speakers

A template is added to display three speakers in a row. The speakers data obtained from the model is looped through and details of every speaker is passed to the speaker-item component, which handles the design and layout for every item in the speakers list.

<div class="ui stackable grid container">
 {{#each model.speakers as |speaker|}}
   <div class="five wide column speaker-column">
     {{public/speaker-item speaker=speaker}}
   </div>
 {{/each}}
</div>

Adding component for speaker-item

A component for displaying the speaker-item is added to templates/component/public directory. The component contains of an accordion which displays the speaker details like biography, social links and the sessions that would be taken by him.

{{#ui-accordion}}
 <div class="title">
   <div class="ui">
     <img alt="speaker" class="ui medium rounded image" src="{{if speaker.photo.iconImageUrl speaker.image '/images/placeholders/avatar.png'}}">
    ...
    ... 
    ...
    // Speaker Details
   </div>
 </div>
{{/ui-accordion}}

The accordion with speaker image and other details appears for every speaker of an event.

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Implementing the PDF download of Schedule in Open Event Web app

Open Event Web app now provides an option to its users to download the PDF of event schedule. Earlier it supported the download of list-view only, now it provides the support to download calendar-view as well. The problem incurred while downloading the calendar-view was that the view gets cropped due to limitations with the library used for PDF generation, thus only some parts of the calendar remained in the PDF. The problem is resolved by creating an image for every date in the schedule and adding the generated image to the PDF.

Selecting and adding the data for PDF generation

The data to be added to PDF depending on the filters and date-selectors applied is chosen from the DOM. Selection of data is done by looping through all the dates and adding only the ones which do not have ‘hide’ class added to them. The selected dates are first expanded such that their complete view is available while generating the image. The complete data is stored in a variable depending on if the complete schedule is requested for download or some filter is applied, which is later used for generating the image.

let fullScheduler = true;
let mapValue = '';

pdf = new jsPDF('l', 'pt', 'a1');
$('.calendar').each(function() {
 let hidePresent = $(this).attr('class').split(' ').indexOf('hide') <= 0;

 if (hidePresent) {
   $timeline = $(this);

  // Expanding the schedule for current date
  ...
  ...
 }
 fullScheduler = hidePresent && fullScheduler;
});

if(fullScheduler) {
 $timeline = $('.calendar').parent();
 mapValue = $timeline.children();
}

Adding the notification while generating the PDF

A loader with the notification is added to provide better user experience, as the PDF generation takes place at the time of request itself it may take some time depending on the size of the schedule. The notifications are added using ‘sweetalert’ library already added for Add to calendar notifications.

swal("Generating the PDF",{
 icon: "./images/loader.gif",
 buttons: false
});

Downloading the PDF

The selected dates are stored in an array named ‘schedArr’ whose data sequentially is passed for canvas generation. A new page is added to the PDF of size equal to canvas and the generated canvas is added to that page. With every new page added to the calendar a count is increased to keep a track if all the selected dates are added to PDF.

async.eachSeries(schedArr, function (child, callback) {
 html2canvas(child, {
   onrendered: function (canvas) {
     pdf.addPage(canvas.width, canvas.height);
     child.style.width = initialWidth[count] + 'px';
     pdf.addImage(canvas, 'png', 0, 0, canvas.width, canvas.height);
     currDate++;
     if(currDate === schedArr.length){
       pdf.deletePage(1);
       swal.close();
       pdf.save(scheduleDate + '.pdf');
     }
     count++;
     callback();
   }
 });
});

When the last page is added, the notification is closed and user is prompted to download pop-box.

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Integrating Google Calendar API in Open Event Web app

Open Event Web app allows organizers to add a feature which enables the users to add any session to their google calendar. The organizer is required to generate an API key and client ID on Google developers console and add the generated credentials to web app generator. The credentials are added to the generated application and every session is added with an Add to calendar button, which on click makes the request to add the corresponding session to the calendar.

Creating Client ID and API key

Enable the Google calendar API from Google developers console. Go to `Create Credentials` tab and generate an API key and client ID for your app. While creating the client ID, an input field is present which requires Authorised javascript origins, mention the domains where the generated application would be deployed.

Adding Client ID and API key to the generator

The Client ID and API key obtained from the developer console is added to the web app generator. The event generated uses these credentials to make a request to the server for adding any session to the calendar.

The added credentials are used to initialise the client in the procedure `initClient()` –

function initClient() {
 let id = document.getElementById('gcalendar-id').value;
 let key = document.getElementById('gcalendar-key').value;
 let CLIENT_ID = id;
 let API_KEY = key;
 let DISCOVERY_DOCS = ["https://www.googleapis.com/discovery/v1/apis/calendar/v3/rest"];
 let SCOPES = "https://www.googleapis.com/auth/calendar";

 gapi.client.init({
   apiKey: API_KEY,
   clientId: CLIENT_ID,
   discoveryDocs: DISCOVERY_DOCS,
   scope: SCOPES
 })
}

Adding session to the Google calendar

Every Google calendar enabled event is provided a button with every session, so that corresponding session can be added to the calendar. A procedure named `handleAuthClick` is called with the details of session being passed as parameter when the user clicks on the button. This function handles the authentication required for adding session to the calendar.

function handleAuthClick(title, location, calendarStart, calendarEnd, timezone, description) {
 let isSignedIn = gapi.auth2.getAuthInstance().isSignedIn.get();
 if (!isSignedIn) {
   gapi.auth2.getAuthInstance().signIn().then(function() {
     main.listUpcomingEvents(title, location, calendarStart, calendarEnd, timezone, description);
   });
 } else {
   main.listUpcomingEvents(title, location, calendarStart, calendarEnd, timezone, description);
 }
}

A function named `listUpcomingEvents` makes the request to insert the event object with details of the session to the calendar.

function listUpcomingEvents(title, location, calendarStart, calendarEnd, timezone, description) {
 let event = {
  ... // Event details  


  ... // Code for notifications
  ...
  ...
   'colorId': '5'
 };

 let request = gapi.client.calendar.events.insert({
   'calendarId': 'primary',
   'resource': event
 });
 request.execute(function(event) {
  // Success notification
 });
}

When the session with the corresponding data is added to calendar, an alert box notifying successful addition of session is shown up on the screen.

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Add feature to view slides and videos of sessions in Open Event Webapp

The Open Event Web App has two components :

  • An event website generator
  • The actual generated website output.

The web generator application can generate event websites by getting data from event JSON files and binary media files, that are stored in a compressed zip file or through an API endpoint. The JSON data format of version 1 as well as version 2, provides user an option to add the slide and video URLs of the sessions. The data from JSONs is extracted and stored in the objects for a particular session, and in the template, the data for videos and slides are rendered in their corresponding iframes.

Extracting data from event JSONs

The data is extracted from the JSONs and is stored in an object. The object containing the data is sent to the procedure which compiles the handlebars templates with that data.

JSON data format v1

video: session.video,
slides: session.slides,
audio: session.audio

 

JSON data format v2

video: session['video-url'],
slides: session['slides-url'],
Audio: session['audio-url']

 

The JSON data format for v1 and v2 are different and thus the data is extracted from the file depending on API version chosen for web app generation. The files where data extraction takes place are fold_v1.js and fold_v2.js for API v1 and v2 respectively.

Adding event emitter

Onclick event emitter on schedule division calls the procedure “loadVideoAndSlides” with the parameters corresponding to the session clicked.

<div class="schedule-track" id="{{session_id}}" onclick = "loadVideoAndSlides('{{session_id}}', '{{video}}', '{{slides}}')">
   .....
   .....
</div>

The parameters Session ID, Video URL and Slide URL are passed to the procedure which is responsible for displaying the slides and video iframes for the sessions. This resolves the problem of heavy data binding to the page, as the frames for videos and slides are loaded on page only when the session is clicked.

Procedure called on click event

The performance of web app is significantly improved by using the call and listen mechanism as only the requested videos are loaded into the document object model.

function loadVideoAndSlides(div, videoURL, slideURL){
 if(videoURL !== null && videoURL !== '') {
     $('#desc-' + div).children('div').prepend(' + div + '" class = "video-iframe col-xs-12 col-sm-12 col-md-12" src="https://www.youtube.com/embed/' + videoURL + '" frameborder="0" allowfullscreen>');
 }
 if(slideURL !== null && slideURL !== '') {
     $('#desc-' + div).children('div').prepend(' + div + '" class = "iframe col-xs-12 col-sm-12 col-md-12" frameborder="0" src="https://view.officeapps.live.com/op/embed.aspx?src=' + slideURL  +'">');
 }
}

 

The video and slide URLs passed to the procedure are used for loading the iframes from youtube and office apps or google docs respectively as shown above, and the resulting slide view is as shown below

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Adding multiple themes in Open Event Web app

Open Event Web app generator provides an option to event organizers to choose the theme for their event website. Previously it supported the default light theme for the websites, but now it supports a customized dark-theme as well inspired from the twitter dark-mode. Adding this new feature to the User Interface of the generated website, Open Event Web app provides a stylish view for the website of an event.

How we enabled multiple theme support?

The client is provided an option to choose the theme, either ‘light’ or ‘dark’ from the generator. Depending on the option selected, the data is sent to the server, the server extracts the data and while compiling the stylesheet for the pages takes into the account which theme is chosen by the client.

Adding option to choose theme

A drop-down menu is added on the generator page which lets the client choose either of the light or dark themes. The default theme is light.

<label for="theme">Choose your theme</label>
<select class="form-control" id="theme" name="theme">
 <option value="light">Light</option>
 <option value="dark">Dark</option>
</select>

Defining the color schema

The color schema is set different for both the themes, this is achieved by making two different stylesheets for the light and dark themes. The style or color of an element is assigned a variable in main css file(application.scss). Those variables are overwritten while compiling these specific files depending upon the theme chosen.

_light.scss
Defines the values of variables for light theme.

$navbar-color: #ffffff;
$link-color: $gray-dark !default;
$hover-color: $black !default;
$span-background: #efefef !default;

 

_dark.scss
Defines the values of variables for dark theme.

$navbar-color: #2b324a;
$link-color: $light-blue;
$hover-color: $light-blue;
$span-background: #333d5a;

Setting up theme field in json data

The json data to be used for compiling the templates, sets or unsets the theme field according to the theme selected by the client.

if (req.body.theme === 'light') {
 jsonData.theme = 0;
} else {
 jsonData.theme = 1;
}

 

Rendering style in template files

Now we have the value for theme selected by the client, the data used for rendering the CSS file is chosen accordingly. If the theme is light, the file containing color-scheme for light proposition is selected else the dark one. The output file contains the values for color variables according to the theme.

sass.render({
 file: __dirname + '/_scss/_themes/_' + theme + '-theme/_' + theme + '.scss',
 outFile: distHelper.distPath + '/' + appFolder + '/css/schedule.css'
}, function(err, result) {
 if (!err) {
      ...
      ... // Minifying CSS file and writing 
   callback(null);
});

The output file is schedule.css which contains the style for different pages according to the theme chosen while web app generation.

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Adding event to overview site of Open Event Webapp

Open Event Web app has two components: The generator used for generating event website and the generic web application for any event. The overview site showcases the example events generated using web app generator. The event added to the overview site keeps on updating with every new feature added. The samples on overview site updates whenever Travis build is triggered. This blog will illustrate how to add an event to overview site.

Adding event name and links to overview site

The event to be shown on overview site is added to the ‘index’ page of overview site with the link to event and a link to image as shown below.

<div class="col-md-4 col-xs-12 col-sm-6 event-holder">
   <div class="thumbnail">
       <a href='./SparkSummit2017/index.html' target='_blank'>
           <img src='./SparkSummit17.jpg' onerror="imgError(this, true);">
           <div class="caption">
               <h4 class="name">Spark Summit 2017</h4>
           </div>
       </a>
   </div>
</div>

Adding event image

The event image is chosen and added to the same directory containing the index page for overview site. Following is the image selected for Spark Summit 2017 sample.

Copying the event image to event directory

The samples are kept updated by generating the samples with the modified changes using travis-ci. Therefore, the static files for samples are copied to event folder which is pushed to github later for build. Following is the helper function used for copying the files. The counter keeps track for number of files copied.

it('should copy all the static files', function (done) {
 let staticPath = __dirname + '/../src/backend/overviewSite/';
 let totalFiles = 17;
 let counter = 0;

 function copyStatic(fileName) {
   fs.readFile(staticPath + fileName, function (err, data) {
     if (err) {
       done(err);
       return;
     }
     fs.writeFile(dist.distPath + '/[email protected]/' + fileName, data, function (err) {
       if (err) {
         done(err);
         return;
       }
       counter++;
       if (counter === totalFiles) {
         done();
       }
     });
   });
 }

Adding tests for the event and regenerating on every build

The sample is rebuilt on every modified change in the project, so every feature added is reflected in the samples present on the overview site. The generator procedure ‘createDistDir’ is called with the required data being passed to it. Following is an example for generating Spark Summit 2017 sample and testing the sample generation in event directory.

it('should generate the Spark Summit 2017 event', function (done) {
 let data = {};

 data.body = {
   "email": '[email protected]',
   "theme": 'light',
   "sessionMode": 'expand',
   "apiVersion": 'api_v2',
   "datasource": 'eventapi',
   "apiendpoint": 'https://raw.githubusercontent.com/fossasia/open-event/master/sample/SparkSummit17',
   "assetmode": 'download'
 };


 generator.createDistDir(data, 'Socket', function (appFolder) {
   assert.equal(appFolder, "[email protected]/SparkSummit2017");
   done();
 });

});

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Adding Logs for Request Status in Open Event Web app

Open Event Web app handles multiple requests from the client using task queue, every request from client is put in the job queue and handled one at a time. The only log shown to client was either ‘waiting’ or ‘processing’, so we need to show additional logs like request waiting number as well. The logs are shown in real time using sockets.

How to add logs?

The logs of any request are shown to the client in real time using socket emit and listener events. Whenever any data is to be displayed inside the logs, the server emits an event with the data. The socket listens to the event and appends the data received to the logs section of the view.

Creating helper for emitting data

The helper function named ‘logger’ is created which emits the event ‘buildLog’ whenever it is called with the data being passed as arguments. Every time a message is passed to this procedure, it adds it to array of objects containing the data.

'use strict';

// eslint-disable-next-line no-var
var exports = module.exports = {};
const buildLog = [];
let obj = {};
let emit, largeMsg, message;

exports.addLog = function(type, smallMessage, socket, largeMessage) {
 if (typeof largeMessage === 'undefined') {
   largeMsg = smallMessage;
 }

 buildLog.push({'type': type, 'smallMessage': smallMessage, 'largeMessage': largeMsg});
 message = largeMsg.toString();
 obj = {'type': type, 'smallMessage': smallMessage, 'largeMessage': message};
 emit = false;

 if (socket.constructor.name === 'Socket') {
   emit = true;
 }
 if (emit) {
   socket.emit('buildLog', obj);
 }
};

Updating logs in real time

The helper created above emits the event ‘buildLog’, the socket on listening this event appends the data inside logs division with the data received from the helper while emitting the event.

socket.on('buildLog', function(data) {
   const spanElem = $('<span></span>'); // will contain the info about type of statement
   const spanMess = $('<span></span>'); // will contain the actual message
   const aElem = $('<button></button>'); // Button to view the detailed error log
   const divElem = $('

); // Contain the detailed error log
   const paragraph = $('<p></p>'); // Contain the whole statement

  //Code for styling the logs division
  ....
  ....


     divElem.text(data.largeMessage);
     paragraph.append(aElem);
     paragraph.append(divElem);
     updateStatusAnimate(data.smallMessage, 200, 'red');
     $('#btnGenerate').prop('disabled', false);
     $('input[ type = "radio" ]').attr('disabled', false);
     $('#email').prop('disabled', false);
   }
   $('#buildLog').append(paragraph);
   $('#buildLog').scrollTop($('#buildLog')[0].scrollHeight);
 });
});

Add request waiting number

Whenever a new request is received from the client the server emits the event ‘waiting’ if any other job is currently being processed. The helper above is used to add request waiting number to the logs.

const jobs = await queue.getJobs('waiting', {start: 0, end: 25});
const activeJob = await queue.getJobs('active', {start: 0, end: 25});
const jobIds = jobs.map((currJob) => currJob.id);

if (jobIds.indexOf(currJobId) !== -1) {
 socket.emit('waiting');
 logger.addLog('Info', 'Request waiting number: ' + (currJobId - activeJob[0].id), socket);
}

Add status in logs

On listening the event named ‘waiting’ the status is updated to ‘waiting’ in the view and is shown to the client.

socket.on('waiting', function() {
 updateStatusAnimate('Request status: Waiting');
});

Update request waiting number

Whenever a job is started being processed from the queue, the waiting number of all the requests in the ready queue is updated. The socket connection for corresponding request is obtained from the main socket object(socketObj) which updates whenever a new request comes from the client.

const jobs = new Promise(function(resolve) {
 resolve(queue.getJobs('waiting', {start: 0, end: 25}));
});

generator.createDistDir(job.data, socketObj[processId], done);
jobs.then(function(waitingJobs) {
 waitingJobs.forEach(function(waitingJob) {
   logger.addLog('Info', 'Request waiting number: ' + (waitingJob.id - job.id), socketObj[waitingJob.id]);
 });
});

 

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Adding Code of Conduct in Open Event Web app

Open Event Server sends JSON data as a response of its REST (Representational State Transfer) API. The main eventyay platform allows organizers to add code of conduct to their event, as a result the JSON data sent by the server contains code of conduct key value pair, this value is extracted from the data and is used to create a separate page for Code of Conduct in any event.

The steps for data extraction and compilation are as follows:

Extracting code of conduct

Since open event server has two types of JSON data formats v1 and v2, both of them contains code of conduct. The key for code of conduct in v1 is code_of_conduct and for v2 is code-of-conduct. The data extraction for v1 data format occurs in fold_v1.js and the main event details are stored in an object urls as shown below:

fold_v1.js

const urls= {
 ....
 ....
 ....

 email: event.email,
 orgname: event.organizer_name,
 location_name: event.location_name,
 featuresection: featuresection,
 sponsorsection: sponsorsection,
 codeOfConduct: event.code_of_conduct
};

 

fold_v2.js

const urls= {
 ....
 ....
 ....

 email: event.email,
 orgname: event['organizer-name'],
 location_name: event['location-name'],
 featuresection: featuresection,
 sponsorsection: sponsorsection,
 codeOfConduct: event['code-of-conduct']
};

Adding template for CoC

Now we have extracted the data and have stored the value for code of conduct in an object, we need to render this in a template. For this, we created a template named CoC.hbs and the data for code of conduct is accessed via {{{eventurls.codeOfConduct}}} as shown below.

{{>navbar}}
<div class="main-coc-container container">
 <div class="row">
   <div class="middle col-sm-12">
     <h2 class="filter-heading track-heading text-center">
       <span>Code of Conduct</span>
     </h2>
   </div>
 </div>

 <div class="row">
   <div class="col-sm-12 col-md-12">
     <div class="coc">
       {{{eventurls.codeOfConduct}}}
     </div>
   </div>
 </div>
</div>
{{>footer}}

Compiling and minifying

Now we have stored the event details in an object we copy this object as a key to jsonData, this data is passed as an argument for compiling the code of conduct template namely CoC.hbs to a HTML file and is lately minified. For minification purpose gulp module is used.

if(jsonData.eventurls.codeOfConduct) {
 setPageFlag('CoC');
 fs.writeFileSync(distHelper.distPath + '/' + appFolder + '/CoC.html', minifyHtml(codeOfConductTpl(jsonData)));
}

Adding link to CoC page

Till now, we have successfully compiled a HTML page for code of conduct of an event. This page is linked under a heading in the footer section of every page by placing reference to it in footer.hbs.

{{#if eventurls.codeOfConduct}}
 <li><a target="_self" href="CoC.html">Code of Conduct</a></li>
{{/if}}

Customizing the CoC container

The code of conduct page is customized by placing the container in the center and aligning the text. Styling like background-color, padding and margin are set on the container to provide a better appearance to the page.

.coc {
 margin: auto;
 text-align: justify;
 width: 60%;

 a {
   &:hover {
     color: $dark-black;
   }
 }
}

.main-coc-container {
 background-color: $main-background;
 margin-bottom: 4%;
 margin-top: 2%;
 padding-bottom: 50px;
 padding-top: 2%;
}

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