How to pass boolean variable of false in a URL
URLs are strings and all values in a URL are strings. When you see i=0
in a URL, 0
is a string. When you see b=true
, true
is a string. When you see s=
, the value is an empty string.
For those strings to take on another meaning—the integer 0
or the Boolean true
, say—the server-side program must be told how to interpret them. Often web frameworks will make intelligent guesses as to the right type, or sometimes a type is declared explicitly in a model.
How you'll do it depends entirely on what server-side language and what framework, if any, you're using.
Passing Boolean param in laravel via url
Since version laravel/framework: v6.13.
There are added ability to call on the \Illuminate\Http\Request
method boolean
that will return true when value is "1", "true", "on", and "yes". Otherwise, returns false.
Store boolean variable in url dispatching
You could have two URL patterns and pass results
in the kwargs:
url(r'^(?P<question_id>[0-9]+)/results/shorten/$', views.shorten, {'results': True}, name='shorten'),
url(r'^(?P<question_id>[0-9]+)/shorten/$', views.shorten, {'results': False}, name='shorten'),
If you don't want to do this, then there isn't currently a simple way to cast the results
string to a boolean value. You could write a middleware or decorator, but that would be overkill.
How to pass boolean value from one component to another in react?
I was not able to replicate the issue that you mentioned. Here is the code sandbox link below:
https://codesandbox.io/s/wizardly-pine-4edci7?file=/src/App.js
The naming convention that you used for the useAuth
component is incorrect. From the naming convention it seems like it is a custom hook but rather it is a component.
So, you should use the following naming convention for it UseAuth
. And it works fine in the above given codesandbox link.
Additional Note: All the custom hooks in reactjs are to be prefixed with use
keyword. So, I would suggest to change the name of the component from useAuth
to just Auth
all together.
Why does the Flask bool query parameter always evaluate to true?
This is expected as query string is an actual string, hence when you get a string no matter what it is, if it's not empty, it will be true.
As in:
>>>bool('False')
True
You will have to do string comparison if you want to get a boolean.
how pass Boolean data to another page(which does not have a direct page route)
You just need to create a public static
boolean variable in your MainActivity
and you can read value of that boolean variable from any other activities using this syntax MainActivity.(variableName)
Angular query params as boolean type, not string
Map the value to a boolean by performing a string comparison against 'true'
.
ngOnInit() {
this.paywallQuery$ = this.route.queryParamMap.pipe(
map(params => {
const value = params.get('paywall');
return value ? value.toLocaleLowerCase() === 'true' : false;
})
);
}
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