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kandi X-RAY | do-app Summary
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QUESTION
I'm currently following a tutorial of a ToDo-App in flutter. With the code of the "Checkbox"-Function (which is there to display whether you have finished a task or not), I get the following error: Expected an identifier.
This is the code:
...ANSWER
Answered 2021-Jun-10 at 21:34You are missing the second expression on line 9
QUESTION
I am new to Django and API creation. I am trying to figure out if it is better to use djangorestframework
or just use JsonResponse
. I got the suggestion of djangorestframework
from Digital Ocean's tutorial but also found out about JsonResponse
, which seems simpler given that I don't have to install another package.
Goal: I would like to be able to provide user information for both web and mobile applications.
I see that there are some reasons provided on this post for djangorestframework
, which I pasted below for posteriority.
...The common cases for using DRF are:
1)You're creating a public-facing external API for third-party developers to access the data in your site, and you want to output JSON they can use in their apps rather than HTML.
2)You're doing mobile development and you want your mobile app to make GET/PUT/POST requests to a Django backend, and then have your backend output data (usually as JSON) to the mobile app. Since you don't want to pass back HTML to the mobile app, you use DRF to effectively create a REST API that your mobile app can call.
3)You're creating a web app, but you don't want to use the Django templating language. Instead you want to use the Django ORM but output everything as JSON and have your frontend created by a JavaScript MVC framework such as React, Backbone, AngularJS, etc. In those cases, you can use DRF to output JSON that the JavaScript framework can process.
ANSWER
Answered 2021-Jun-04 at 14:44DRF basically provides you many features to make APIs that you don't have in raw django.
for example:
Serializers: a declarative way(django style like declaring models) of making serializers, when you use
JsonResponse
you have to tell everywhere what to serialize, with the serializer you have to import it and just use it, also this serializers can be able to save/update objects too. Also support ORM source to connect yours models(think how difficult would be serialize a model with nested relations with JsonResponse).The Web browsable API, you can see all the availables endpoints.
Third party packages to install and use: https://www.django-rest-framework.org/community/third-party-packages/#existing-third-party-packages.
QUESTION
I start MySQL docker starts and run fine:
...ANSWER
Answered 2021-May-20 at 13:43The id 69692152171a
is the first layer of the image and because you probably have another version of mysql locally that has the same layer as this one, when you did pull the image, this message 69692152171a: Already exists
means that there where no changes on that layer between versions.
To see the layers of an image run docker image inspect mysql:5.7
You can read more here: https://docs.docker.com/engine/reference/commandline/pull/#examples
QUESTION
I'm trying to make an app that has basically the same mechanics as a simple todo-app. My problem is, when I try to open the screen where I can create a new project/todo(new_project_screen), there should be loaded some TextFields, but they don't. Instead, this error occurs. I tried several solutions from stackoverflow, but nothing worked and I have no idea why it's not working.(sorry for my bad english, I'm not a native xD)
Here is my code: main.dart:
...ANSWER
Answered 2021-May-11 at 19:09The file new_project_screen.dart has the problem
To be exact, the problem can be found in lines 24:35
And seems like that project variable is null project.name;
That is because you are creating Project project but isn't instancied yet. Is just a null variable
See the image below, will help you to understand a bit:
https://dartpad.dev/1ebc897cd3f547cc0b79e52290a63653
So to fix it, you need to create the instance previously
QUESTION
I was trying to use the command "npm run hot," but instead of executing the command, it gives me this error:
...ANSWER
Answered 2021-May-07 at 19:00It's a known issue, in order to fix this you have to add the following code to your webpack.mix.js:
QUESTION
from flask import Flask, render_template
# Flask is a class that allows us to create an app
# render_template is a method offered by flask
app = Flask(__name__) # creates an app with the name of the file
@app.route('/') # route that listens to the homepage
def index(): # route handler
# render_template(template_name_or_list)
# used to specify an html template to render to the user
return render_template('index.html', data=[{
'description': 'Todo 1'
}, {
'description': 'Todo 2'
}, {
'description': 'Todo 3'
}])
# To run the app
# In the terminal
# FLASK_APP=app.py FLASK_DEBUG=true flask run
...ANSWER
Answered 2021-Apr-08 at 02:51Depend on what machine your using, you need to do one of the following:
Unix Bash (Linux, Mac, etc.):
QUESTION
I have the following simple GitLab CI file
...ANSWER
Answered 2021-Mar-27 at 09:39I found the problem to fix my issue. I needed to set a no_proxy environment entry in my gitlab-runner config.toml file. This won't affect everyone, but since i am behind a corporate proxy, I needed it.
QUESTION
I recently pushed my app to heroku and this app uses a mongodb atlas. It worked fine when I ran it on my localhost but when I pushed it to the heroku server, it give me this error:
...ANSWER
Answered 2021-Feb-09 at 05:26I figured it out, the problem was that heroku wasn't reading this part in the mongoose.connect:
QUESTION
Recently i started with a Twitter Integration.
The callback is working as it should.
but when i press the Authorize App i keep receiving this error.
unable to process request due to missing initial state. this may happen if browser sessionstorage is inaccesible or accidentally cleared
This is the function where i call the twitter_login.
...ANSWER
Answered 2021-Jan-11 at 00:01After some hours trying to figure out the problem, i found that the issue was on the AndroidManifest.xml
Basically on the intent-filter, the scheme was missing, and i need to remove the https from the host and the function call. After that it work :)
QUESTION
I've searched around quite a bit for this, but I'm not able to find a React Hooks example that works where the state has nested objects. I've been mostly following this tutorial. I've created an example fraction calculator component, wherein I want to recalculate the result whenever either input field changes:
...ANSWER
Answered 2020-Dec-10 at 09:19since the object pointer hasn't changed, React will not trigger another render.
change this:
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