I am building an IM platform based on Firebase and I would like that every user got an address that directed them to the chat room.
http://chatt3r.sitecloud.cytanium.com/
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="https://cdn.firebase.com/v0/firebase.js"></script>
<script>
var hash; // global incase needed elsewhere
$(function() {
hash = window.location.hash.replace("#", "");;
myRootRef = new Firebase("http://xxxx.firebaseio.com");
var postingRef;
if (hash) {
// user has been given a hashed URL from their friend, so sets firebase root to that place
console.log(hash);
postingRef = new Firebase("http://xxxx.firebaseio.com/chatrooms/" + hash);
} else {
// there is no hash, so the user is looking to share a URL for a new room
console.log("no hash");
postingRef = new Firebase("http://xxxx.firebaseio.com/chatrooms/");
// push for a unique ID for the chatroom
postingRef = postingRef.push();
// exploit this unique ID to provide a unique ID host for you app
window.location.hash = postingRef.toString().slice(34);
}
// listener
// will pull all old messages up once bound
postingRef.on("child_added", function(data) {
console.log(data.val().user + ": " + data.val().message);
});
// later:
postingRef.push({"message": "etc", "user": "Jimmybobjimbobjimbobjim"});
});
</script>
</head>
That's working for me locally. You need to change xxxx to whatever URL yours is at, and add on however many characters that first part is at the .slice() bit.
Hashes.
If I understand your question correctly, you want to be able to share a URL that will allow anyone who clicks on the URL to log onto the same chatroom.
I did this for a Firebase application I made once. The first thing you need to be doing is using the .push() method. Push the room to Firebase, then use the toString() method to get the URL of the push. Some quick JS string manipulation - window.location.hash = pushRef.toString().slice(x) - where 'x' is whatever place you want to snip the URL at. window.location.hash will set the hash for you. Add the hash to the sharing URL, and then for the next step:
You will want a hash listener to check if there is already a hash when you open the page, so $(window).bind('hashchange', function() {UpdateHash()}) goes into a doc.ready function, and then...
function UpdateHash() {
global_windowHash = window.hash.replace("#", "");
// to assign the hash to a global hash variable
if (global_windowHash) {
// if there was already a hash
chatRef = new Firebase("[Your Firebase URL here]" + "/chatrooms/" + global_windowHash);
// chatRef is the global that you append the chat data to, and listen from.
} else {
// there wasn't a hash, so you can auto-create a new one here, in which case:
chatRef = new Firebase("[Your Firebase URL here]" + "/chatrooms/");
chatRef = chatRef.push();
window.location.hash = chatRef.toString().slice(x);
}
}
I hope that helps (and works :P ). If there are any questions or problems, then just ask!
Related
I'm trying to have my google sheets synced with my firebase database. I'm not very experienced with javaScript, so is it possible using the below method? The idea is that it would automatically sync every time a new row gets created/updated/deleted. I know that I need the script files but not sure how to import them in the .gs file, so that's why it's in the html.
Many thanks!
translate.gs
function saveToFirebase() {
var config = {
apiKey: "MY_API_KEY",
authDomain: "MY_DOMAIN.firebaseapp.com",
databaseURL: "MY_DOMAIN.firebaseio.com",
projectId: "MY_DOMAIN",
storageBucket: "MY_DOMAIN.appspot.com",
messagingSenderId: "MESSAGE_ID"
};
firebase.initializeApp(config);
var database = firebase.database();
database.ref('food/' + MY_USER_UID).set({
name: "pizza funghi",
});
}
sidebar.html
<!DOCTYPE html>
<html>
<head>
<script src="https://www.gstatic.com/firebasejs/4.12.0/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/4.12.0/firebase-auth.js"></script>
<script src="https://www.gstatic.com/firebasejs/4.12.0/firebase-database.js"></script>
</head>
<body>
</body>
</html>
There is a third-party libarary which integrates with Firebase's REST API. If you're comfortable using it, this becomes pretty straightforward.
First we'll need to create a tab to track changes. We need the identity of those who make changes, so we have to break this into two parts - a simple onEdit trigger which runs as the modifying user, and an installable trigger which I'll call uploadChanges. The latter is what talks to Firebase.
Create a tab called changes
Add a frozen row with the following headers:
Uploaded
User
Value
Install the third party Firebase library
Begin by clicking Resources > Libraries in the script editor, then pasting MYeP8ZEEt1ylVDxS7uyg9plDOcoke7-2l in the "Find a Library" box. Hit Save.
Opt for stability by choosing the latest public release, or choose the latest release (I chose latest while writing this).
Click OK
Now would be a good time to peruse the reference docs so you know what I'm up to in the below instructions :-)
Set up security (I'm assuming you want this script to run as you)
Make your Google account (which runs the script) be at least an Editor for your Firebase project.
Set the appropriate authorization scopes for your App Script project:
Go to File > Project Properties > Scopes in the App Script editor
Select View > Show manifest file (the manifest file is usually hidden by default)
Add https://www.googleapis.com/auth/userinfo.email and https://www.googleapis.com/auth/firebase.database to the oauthScopes array (add it if it's not already there)
Save the manifest file. Next time you run the script you'll get a pop-up asking about permissions.
The equivalent of your translate.gs above, which always just sets your food to 'pizza funghi`, would look like this:
function saveToFirebase() {
var dbUrl = "MY_DOMAIN.firebaseapp.com"; // Set appropriately
var token = ScriptApp.getOAuthToken(); // Depends on security setup above
var firebase = FirebaseApp.getDatabaseByUrl(dbUrl, token);
newData = {
name: "pizza funghi",
};
firebase.setData('food/' + MY_USER_UID, newData);
}
But you said you wanted to update Firebase on every save. To do this you really just want to rip off one of the various onEdit tutorials floating around the net. The resulting onEdit should look something like this:
function onEdit(e) {
// First get stuff about the edit.
// This approach only gets the top left cell of a multi-cell edit.
var editRange = e.range; // The edited range
var newValue = editRange.getValue();
// Next, who is the editor? Remove the `split` for full email.
var username = Session.getActiveUser().getEmail().split('#')[0];
if (username == '') {
username = SOME_REASONABLE_DEFAULT; // Or give up if you wish
}
// Finally save the change
SpreadsheetApp.getActiveSpreadsheet()
.getSheetByName('changes')
.appendRow([false, username, newValue]);
}
function uploadChanges() {
// Attach to Firebase
var dbUrl = "MY_DOMAIN.firebaseapp.com"; // Set appropriately
var token = ScriptApp.getOAuthToken(); // Depends on security setup above
var firebase = FirebaseApp.getDatabaseByUrl(dbUrl, token);
// Get content of changes tab
var changeSheet = SpreadsheetApp.getActiveSpreadsheet()
.getSheetByName('changes');
var changeData = changeSheet.getDataRange()
.getValues();
// Upload all new-to-us changes
for (var i = 1; i < changeData.length; i++) {
if (changeData[i][0]) {
continue; // We already uploaded this one
}
changeData[i][0] = true; // Optimistically assume we'll succeed
var newData = {
name: changeData[i][2]
};
var username = changeData[i][1];
firebase.setData('food/' + username, newData);
}
// Blanket update of change-data sheet to update upload status
changeSheet.getRange(1, 1, changeData.length, changeData[0].length)
.setValues(changeData);
}
Lastly, set up some triggers.
Choose Edit > Current Project's Triggers in the script editor
Add a new trigger for onEdit
Choose onEdit from the leftmost Run dropdown
Choose From spreadsheet in the Events dropdown
Then choose On edit in the rightmost dropdown
Add a new trigger for uploadChanges
Choose uploadChanges from the leftmost Run dropdown
Choose Time-driven from the Run dropdown
Set up a schedule that's appropriate to your needs
EDIT: My original script had you doing everything in onEdit, which tehhowch correctly points out won't work since we're talking to another service. I've updated to stage to a "changes" tab which I include in setup. My new approach maintains a perpetual record of old uploads; for performance you might instead choose to just clear the changes sheet once you've done the upload.
Using GoogleAppMaker how to create a data source from google contacts. There is an employee HR example app but I want to similarly manage contacts (add, modify, delete) and use select criteria.
At this time this task is not trivial in App Maker and it is pretty much generic. We can change question wording to CRUD operations with 3rd party datasources. Let's break it into smaller parts and address them separately.
Read/list contacts
This task is relatively easy. You need to use Calculated Model to proxy Apps Scripts Contacts API response. Once you create model with subset of fields from the Contact response you can create datasource for the model and bind it to List or Table widget. You can also try to find some inspiration in Calculated Model Sample.
// Server side script
function getContacts_() {
var contacts = ContactsApp.getContacts();
var records = contacts.map(function(contact) {
var record = app.models.Contact.newRecord();
record.FirstName = contact.getGivenName();
record.LastName = contact.getFamilyName();
var companies = contact.getCompanies();
if (companies.length > 0) {
var company = companies[0];
record.Organization = company.getCompanyName();
record.Title = company.getJobTitle();
}
var emails = contact.getEmails();
if (emails.length > 0) {
record.Email = emails[0].getAddress();
}
var phones = contact.getPhones();
if (phones.length > 0) {
record.Phone = phones[0].getPhoneNumber();
}
return record;
});
return records;
}
Create/Update/Delete
Since Calculated Models have some limitations, we need to turn on our imagination to create, update and delete records from their datasources. The basic strategy will be calling server side scripts for CUD operations in response to user actions on client side. To get user's input from UI we will need to utilize page's Custom Properties, one property for each Contact field:
Here are some snippets that should explain the idea
Create
// Client script
function onSubmitContactClick(submitButton) {
var props = submitButton.root.properties;
var contact = {
FirstName: props.FirstName,
LastName: props.LastName,
Organization: props.Organization,
...
};
google.script.run
.withSuccessHandler(function() {
// Most likely we'll need to navigate user back to the
// page with contacts list and reload its datasource
// to reflect recent changes, because our `CUD` operations
// are fully detached from the list datasource
app.showPage(app.pages.Contacts);
app.datasources.Contacts.load();
})
.withFailureHandler(function() {
// TODO: Handle error
})
.createContact(contact);
}
// Server script
function createContact(contactDraft) {
var contact = ContactsApp.createContact(contactDraft.FirsName,
contactDraft.LastName,
contactDraft.Email);
contact.addCompany(contactDraft.Organization, contactDraft.Title);
contact.addPhone(ContactsApp.Field.WORK_PHONE, contactDraft.Phone);
}
Update
Idea to update contact records will be very similar to the new contact creation flow, so I skip it for now.
Delete
Assuming that delete button is located inside contacts table row.
// Client script
function onDeleteContactClick(deleteButton) {
var email = deleteButton.datasource.item.Email;
google.script.run
.withSuccessHandler(function() {
// To update contacts list we can either reload the entire
// datasource or explicitly remove deleted item on the client.
// Second option will work way faster.
var contactIndex = deleteButton.parent.childIndex;
app.datasources.Contacts.items.splice(contactIndex, 1);
})
.withFailureHandler(function() {
// TODO: Handle error
})
.deleteContact(contact);
}
// Server script
function deleteContact(email) {
var contact = ContactsApp.getContact(email);
ContactsApp.deleteContact(contact);
}
I've been looking at the documentation for Synchronized Arrays https://www.firebase.com/docs/web/libraries/angular/api.html#angularfire-extending-the-services and https://www.firebase.com/docs/web/libraries/angular/guide/extending-services.html#section-firebasearray
I'm using Firebase version 2.2.7 and AngularFire version 1.1.2
Using the code below, I'm having trouble recognizing $$removed events.
.factory("ExtendedCourseList", ["$firebaseArray", function($firebaseArray) {
// create a new service based on $firebaseArray
var ExtendedCourseList= $firebaseArray.$extend({
$$added: function(dataSnapshot, prevChild){
var course = dataSnapshot.val();
var course_key = dataSnapshot.key();
console.log("new course");
return course;
},
$$removed: function(snap){
console.log("removed");
return true;
}
});
return function(listRef) {
return new ExtendedCourseList(listRef);
}
}])
.factory("CompanyRefObj", function(CompanyRef) {
//CompanyRef is a constant containing the url string
var ref = new Firebase(CompanyRef);
return ref;
})
.factory('CourseList', function (localstorage,$rootScope,ExtendedCourseList,CompanyRefObj) {
var companyID = localstorage.get("company");
$rootScope.courseList = ExtendedCourseList(CompanyRefObj.child(companyID).child("courses"));
)
If I run this code, only the $$added events will be triggered. To simulate the remove events I use the web-interface at Firebase to display data, where I press the remove button and accept the data being deleted permanently.
Additionally, if I delete the $$removed function, the extended service still won't synchronize when a record is deleted.
If I modify my code to use the $firebaseArray instead of extending the service (as seen above) both add and remove events will be recognized.
.factory('CourseList', function (localstorage,$rootScope,$firebaseArray,CompanyRefObj) {
var companyID = localstorage.get("company");
$rootScope.courseList = $firebaseArray(CompanyRefObj.child(companyID).child("courses"));
)
Finally, are there any bad practices I've missed that can cause some of the extended functions to not work?
Solved
$$added: function(dataSnapshot, prevChild){
var course = dataSnapshot.val();
var course_key = dataSnapshot.key();
//Modified below
course.$id = course_key;
//End of modification
console.log("new course");
return course;
}
After posting about the issue at firebase/angularfire github I received an answer that solved my issue. When $$added got overridden by the code provided, the $firebaseArray also lost its internal record $id.
Adding this line of code: course.$id = course_key; before returning the course, made AngularFire recognize when the record was removed from the server.
I want to store information for every logged in user in my meteor app, such as their profile picture, bio, ect. But if I try to do something like Meteor.user().picLink = "..."; it appears to get erased on every subsequent call to Meteor.user(). I assume this means I'm not supposed to store extra data directly on the user object like that.
The only response to that that I can think of is to have a separate collection with user data in it. But that seems like it would be hard to keep consistent with Meteor.users. Is there a better way?
All user accounts come with an automatically published profile field which you can update like so:
var userId = Meteor.userId();
var url = 'http://example.com/kittens.jpg';
Meteor.users.update(userId, {$set: {'profile.photo': url});
That will update the underlying database and persist across connections.
As I point out here you should be aware that the profile object is currently editable by default even when the insecure package has been removed. This means any user can open up the console and modify his/her profile.
A better approach is to deny the updates and to use a method instead:
client
var url = 'http://example.com/kittens.jpg';
Meteor.call('update.photo', url);
server
Meteor.users.deny({
update: function() {return true;}
});
Meteor.methods({
'update.photo': function(url) {
check(url, String);
Meteor.users.update(this.userId, {$set: {'profile.photo': url}});
}
});
I am trying to build an app using Phonegap (Cordova 2.2). I am fairly new to code and js in particular so please be patient if some of my questions seem daft. My question has a few parts:
I want the user to be able to enter name and image (using the device camera) to create their profile. I have tested on the emulator and so far they can enter their name and get take a photo with camera. These both display in the emulator on completion. However, obviously I want to save that detail, so, I have created a DB (from reading, local storage is limited in size).
1. Is the database done correctly? I am getting neither error nor success alerts.
2. I am struggling with the logic of how I pass the information into the database. I'm guessing that I call the populate_UsersDB() function on a click event and need to write some sort of INSERT INTO userProfiles VALUE something. Also, can I grab the Imagedata directly from the onPhotoFileSuccess() function and send it into the database from there.
3. If I don't want to have a done button (rather have a 'Tap here to take picture' placeholder), how do I test that the action is complete and send the info to the db. From reading, I think I can use onChange(), but not sure. Also, guessing I have to use post or get somewhere?
Sorry, I know there is a lot of questions within this question. Any advice or support is greatly appreciated. Thanks. Here's the code.
//Use the device camera to capture an image of the user
var pictureSource; // picture source
var destinationType; // sets the format of returned value
// Wait for PhoneGap to connect with the device
document.addEventListener("deviceready",onDeviceReady,false);
// PhoneGap is ready to be used!
function onDeviceReady() {
pictureSource=navigator.camera.PictureSourceType;
destinationType=navigator.camera.DestinationType;
}
// Called when a photo is successfully retrieved
function onPhotoDataSuccess(imageData) {
// Get image handle
var smallImage = document.getElementById('smallImage');
// Unhide image elements
//
smallImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
smallImage.src = "data:image/jpeg;base64," + imageData;
}
// Called when a photo is successfully retrieved
function onPhotoFileSuccess(imageData) {
// Get image handle
console.log(JSON.stringify(imageData));
// Get image handle
//
var smallImage = document.getElementById('smallImage');
// Unhide image elements
//
smallImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
smallImage.src = imageData;
}
// A button will call this function
function capturePhotoWithData() {
// Take picture using device camera and retrieve image as base64-encoded string
navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality:50, destinationType:Camera.DestinationType.DATA_URL });
}
function getPhoto(source) {
// Retrieve image file location from specified source
navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
destinationType: destinationType.FILE_URI,
sourceType: source });
}
// Called if something goes wrong.
function onFail(message) {
alert('Failed because: ' + message);
}
//CREATE THE DATABASE
document.addEventListener("deviceready", onDeviceReady, false);
var db = window.openDatabase("Users_DB", "1.0", "User Profiles DB", 200000); //will create database or open it
//function will be called when device ready
function onDeviceReady(){
db.transaction(populateUsers_DB, errorCB, successCB);
}
//create table
function populateUsers_DB(tx) {
tx.executeSql('CREATE TABLE IF NOT EXISTS userProfiles (id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT NOT NULL, Image BLOB)');
tx.executeSql('INSERT INTO userProfiles(Name) VALUE ("")');
}
//function will be called when an error occurred
function errorCB(err) {
alert("Error processing SQL: "+err.code);
}
//function will be called when process succeed
function successCB() {
alert("success!");
db.transaction(queryDB,errorCB);
}
//select all from userProfiles
function queryDB(tx){
tx.executeSql('SELECT * FROM userProfiles',[],querySuccess,errorCB);
}
function querySuccess(tx,result){
$('#userList').empty();
$.each(result.rows,function(index){
var row = result.rows.item(index);
$('#userList').append('<li><h3 class="ui-li-heading">'+row['Image']+'</h3><p class="ui-li-desc">Name '+row['Name']+'</p></li>');
});
$('#userList').listview();
}