debe | reactive offline-first Javascript datastore | Database library
kandi X-RAY | debe Summary
kandi X-RAY | debe Summary
Flexible and reactive offline-first Javascript datastore for browsers, node, electron and react-native with focus on performance and simplicity. Includes support for concurrent multi-master/client database replication via plugin.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of debe
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Trending Discussions on debe
QUESTION
I'm studying Java programing and I found a problem which might be a sintax problem but I can't find a clear solution to it. I have the next code:
...ANSWER
Answered 2021-Jun-13 at 21:04Change the condition of the loop
QUESTION
Estoy programando un array, en el cual el usuario debe de elegir su longitud e introducir un valor para cada posición. Finalmente se debe imprimir el valor de cada posición. También he incluido try-catch para detectar alguna excepción.. ¿Alguién sabe porque el programa me lanza una excepción?
...ANSWER
Answered 2021-Jun-08 at 16:19the problem is in this statement:
QUESTION
I want to display an alert message after I submit the form. I already validated the form and that works, but I couldn't launch the message once I submit it.
here's my code.
...ANSWER
Answered 2021-Jun-07 at 14:27You just have to put the desired alert() at the end of the validation function, because it is only reached if nothing is empty and no return: false is called. Therefor the inline event listener in the input isn't necessary.
QUESTION
Context of the problem I am taking a course at www.platzi.com, and in this chapter they are teaching us the logic and operation of token web authentication. So the code shown below is as shown in the course.
The flow of the code is as follows:
You have a resource server called "server.php" this server takes care of the resources you have. There is a route server called "router.php" this server is in charge of receiving the requests, give it to the resource server called "server.php" There is a server for authentication called auth_server.php, this server has two functions:
- Create a token when the user goes to login
- Validate The token that the user supplies to the resource server called server.php
Code
code server.php
...ANSWER
Answered 2021-Jun-02 at 21:34// Se debe validar el token recibido con el servidor,
// de autenticación ejecutando una llamada a tráves
// de curl.
$url = 'https://localhost:8001';
QUESTION
One of the pages on this site has problems with the width on mobile, and I can't find the cause. I tested not displaying the table with 4 columns, which is the only unique element to this page (the other pages work fine). I checked the width properties on the html body, and there doesn't seem to be anything wrong. Any other ideas as to what might be causing this?
I use tables like this one:
...ANSWER
Answered 2021-May-22 at 20:41Css
QUESTION
Good afternoon, I am working with a REST API in which I have a playlist that has many songs, for which I am using JPA and the benefits that allow me to make the relationships between the two. Now, if I want to delete a song already added to the PlayList, I can't do it, I show you my classes below
Class PlayList
...ANSWER
Answered 2021-May-14 at 16:40It is not a very good idea to remove a song using all the songs list in the PlayList.
There is not a join table for @OneToMany association. So we can delete a song much simpler, using SONG table (this is the main reason why a join table for @OneToMany is not convienent).
You need a song id for that and you need to use CrudRepository.deleteById() method.
You can use the full combination (title, artist, album, year) for that, but much simpler to add a song id to JSON.
Better to use this endpoint URL to delete a song
/{playListId}/songs/{songId}
You don't need delete part in the URL, you already use DELETE HTTP method.
Why your code doesn't work
- Incorrect using delete method from the list
QUESTION
I am having problem rendering an arrray of objects in React. For some reason, of 5 elements that it has, it only renders 3. I have checked it in the console, and the following shows:
For some reason, initially it appears on console that the array has 3 elements, but if I check it in the console there are 5 elements instead of 3. Precisely the elements that are rendered are the first 3. This is the React component in case it could be of help:
...ANSWER
Answered 2021-May-09 at 11:01Your first 3 validation are synchronous, so they're immediately added to the array and rendered. The last 2 however are validated on the server side, which takes a bit of time. By the time the response arrives the rendering process is finished. Although the errors are added to the array, the reference to the array itself stays the same, so React doesn't pick up the change. So there are 2 options here: either setErrors on each response with a cloned array or wait for all validations to finish before rendering anything. The first would result in flushing, so in this case it's better to wait for fetch. Note that you have 2 request, which probably can made at the same time, so it might worth to wrap them into Promise.all. Sequential option (one validation at a time):
QUESTION
I'm trying to validate a form via PHP, but I get a syntax error (unexpected token "<") that I can't solve. Here is the code. The error is apparently in line 4 (which is the first bold):
...ANSWER
Answered 2021-Apr-25 at 00:08 is HTML, not a valid PHP construct.
You can have HTML in the same file, although, not usually best practice unless it is a template, but you must close the PHP tag () before writing the HTML.
I'm not sure the purpose of your
QUESTION
Good evening community!
I'm currently getting this error when I attempt to use my custom hook.
This custom hook takes 3 parameters, an initial state, a validation rule, and an action function.
at the moment to validate my data appears as undefined.
...ANSWER
Answered 2021-Apr-16 at 21:03Does validar ever return null or undefined?
It's likely that errores becomes null or undefined at some point, probably when it is set to the return value of validar(valores) in handleSubmit.
Then we call Object.keys(null) in the useEffect, and that causes the error.
EDIT: Ah, yes I see the validar function is not returning a value. Just add return errores at the end.
QUESTION
I'm having some issues with Cloud Firestore. I have an activity where the user can upload a profile with text, an image view, and a progress bar, and then an activity that shows the profile. When I hit the button, the data never uploads, the progress bar just keeps running but I've noticed that the image is loaded in the Storage in Firebase but the "database" of the texts doesn't show. I've run the app on debug mode and it shows this:
...ANSWER
Answered 2021-Mar-16 at 03:08Your security rules allow read, write: if false; are completely closing off access to the database.
The easiest way to resolve this while you're developing is to change your security to open access. These rules should be ok to use in development. But, you most likely wouldn't want to use open access rules in a production application:
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