friendlypix-web | platform Firebase example app - This is the web version | Authentication library
kandi X-RAY | friendlypix-web Summary
kandi X-RAY | friendlypix-web Summary
FriendlyPix is a cross-platform Firebase example app - This is the web version
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friendlypix-web Examples and Code Snippets
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QUESTION
I borrowed some code from the great firebase/friendlypix-web repo (https://github.com/firebase/friendlypix-web/blob/39cca671242d833e83252e31f30ed9b655f9478b/src/FirebaseHelper.js#L722).
The snippet makes use of the numChildren()
function to count a user's followers. However, a comment above the code warns that "This won't scale if a user has a huge amount of followers."
It's hard to judge what is meant here by "huge".
A fix for this could be a cloud function to increment a counter, but it would be nice to know when that would be really necessary, as I might never reach a number considered "huge" by the Google staff who wrote that comment!
...ANSWER
Answered 2020-Feb-09 at 16:02The limit is not as much Firebase itself, but reality of device bandwidth and the economics of reading data.
The main thing to realize is that numChildren()
is a client-side operation that counts the number of child nodes in the DataSnapshot
.
If I recall correctly, the followers
node of FriendlyPix has a structure like this:
QUESTION
I based my project on friendlypix-web and I want to allow users to edit the text of a post, just as they can already edit a comment. I created a method in FirebaseHelper.js to do this.
The code below, using window.prompt() works (see commented section). But I want to use SweetAlert2 which allows textarea to help with longer captions and comments.
Here's my code:
...ANSWER
Answered 2018-Nov-14 at 15:02It's because this
inside a callback function refers to that functions, not the the object outside of the function.
The simplest change is to bind the function to the correct meaning of this
:
QUESTION
I have used the FriendlyPix database as a base for my database.
I have tried to apply the following security rule to:
- Only allow authenticated user to insert new post
- Edit or delete existing post can only be performed by post creator
I have used the security rule from the FriendlyPix GitHub repository, however when I run the simulator I always get "Write Denied" error message.
I have tried various versions of the write rule, but all fail.
Can someone please tell me what I am doing wrong?
...ANSWER
Answered 2017-Oct-19 at 13:16You're trying to write to /posts
. In JavaScript code your simulation is similar to:
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