What is the simplest way to add a query string to URL in Laravel? Let's say I have a route resources like this
Route::get('/test', function() {
});
Are there just some parameters I can pass through to make the url look like this
/test?foo=bar
I'm super new to Laravel and I'm really not looking for something fancy. Thanks!
The simplest way to do this is to simply add the query string in to the url exactly as you have suggested www.example.com/test?foo=bar. In an example:
Route::get('test', function(){
return Input::get("foo");
});
This would return bar.
Simply use Input::get() to retrieve the parameter from the URL.
You can extend this out as much as you want; www.exmaple.com/test?foo=bar&day=Monday&name=John and retrieve them all if you needed to using Input::all(). Printing this out would return:
Array
(
[foo] => bar
[day] => Monday
[name] => John
)
More on the Input function here: https://laravel.com/api/5.1/Illuminate/Support/Facades/Input.html#method_get
Use /test/{foo} for compulsory and /test/{foo?} for optional
Route::get('/test/{foo}', function($foo) {
return "foo value is : ".$foo;
});
Check https://laravel.com/docs/5.1/routing
You get query string values from the request object:
Route::get('test', function () {
$foo = request('foo'); // $foo is now 'bar' or null
});
Related
I have arrays like this
$InternetGatewayDevice['DeviceInfo'][0]['SoftwareVersion'][1]['_value']
and also like this
$InternetGatewayDevice['DeviceInfo'][1]['SoftwareVersion'][2]['_value']
actually, both of them return same value, which is the software version for the router, but because routers belong to different vendors, I have that problem, so
actually, I want to know the path that I have to go in, in order to get my value
so I want to have somethings like this
InternetGatewayDevice.DeviceInfo.0.SoftwareVersion.1._value
as a string
I mean I want a function where I can provide to it the array and the key ,so the function will return to me the path of the array that I have to follow in order to get the value like this
getpath($array,"SoftwareVersion")
whhich will return value like this
InternetGatewayDevice.DeviceInfo.0.SoftwareVersion
are there any way to do this in php ?or laravel package
or is there any way in PHP to get the value whatever the number key is?
I mean like this
$InternetGatewayDevice['DeviceInfo'][*]['SoftwareVersion'][*]
so what ever the key it will return the value
You could try to use he data_get helper function provided by Laravel.
public function getSoftwareVersion(array $data, int $deviceInfoIndex, int $softwareVersionIndex)
{
$index = "DeviceInfo.{$deviceInfoIndex}.SoftwareVersion.{$softwareVersionIndex}";
return data_get($data, $index);
}
Then it can be used like
$softwareVersion = getSoftwareVersion($internetGatewayDevice, 1, 0);
Laravel Docs - Helpers - Method data_get
you can use the get function from lodash php
https://github.com/lodash-php/lodash-php
Example:
<?php
use function _\get;
$sampleArray = ["key1" => ["key2" => ["key3" => "val1", "key4" => ""]]];
get($sampleArray, 'key1.key2.key3');
// => "val1"
get($sampleArray, 'key1.key2.key5', "default");
// => "default"
get($sampleArray, 'key1.key2.key4', "default");
// => ""
In my resource I've got an object like below:
return [
'something' => $this->somerelationship->implode('name',',')
];
Now it returns this result for me:
{
something [
"items,items,items"
]
}
But I want my implode to return a useable array in javascript not just making it 1 index of the array rather than that put each item in 1 slot of array-like below:
{
something
[
{items},{items},{items}"
]
}
How can I achieve that now ?
Instead of ->implode() (which takes an array and turn it into a string), try and do:
'something' => $this->somerelantionship->pluck('name')->all(),
The method pluck() returns an array with all the values from a specific key, which seems to be what you want.
You can return
json_encode($this->somerelationship->pluck('name')->toArray());
Then in your javascripts just JSON.parse() it or put it in a variable in blade:
var items = {!! json_decode($variable) !!}
I have a line of code similar to the following:
Sport::pluck('id', 'name)
I am dealing with frontend JavaScript that expects a list in this format:
var list = [
{ text: 'Football', value: 1 },
{ text: 'Basketball', value: 2 },
{ text: 'Volleyball', value: 3 }
...
]
I am trying to figure out how I can somehow transform the id and name values that I pluck from my model to a format similar to the Javascript list.
If that's unclear, I am looking to end up with an associative array that contains two keys: text and value, where text represents the name field on my model, and where value represents the id of the model - I hope this makes sense.
How would I approach this?
I initially tried something like this (without checking the documentation)
Sport::pluck(["id" => "value", "name" => "text]);
But that isn't how you do it, which is quite clear now. I've also tried some map-related snippet, which I cannot seem to Ctrl-z to.
Any suggestions?
Another method is to use map->only():
Sport::all()->map->only('id', 'name');
The purpose of pluck is not what you intend to do,
Please have a look at below examples,
Sport::selectRaw("id as value, name as text")->pluck("text","value");
// ['1' => 'Football', '2'=>'BasketBall','3'=>'Volleyball',...]
Syntax
$plucked = $collection->pluck('name', 'product_id');
// ['prod-100' => 'Desk', 'prod-200' => 'Chair']
Please see the documentation.
Your output is possible using simple code.
Sport::selectRaw('id as value, name as text')->get();
You could use map.(https://laravel.com/docs/5.8/collections#method-map)
$mapped = Sport::all()->map(function($item, $index) {
return [
"id" => $item["id"],
"name" => $item["text"]
];
});
This is the easiest way. Actually Laravel offers a better way for it. You can use api resources to transform your data from eloquent for the frontend:
https://laravel.com/docs/5.8/eloquent-resources
Try with toArray function:
Sport::pluck('id', 'name)->toArray();
Then you can return your result with json_encode php function;
I have an Eventbus that takes a filter name as its first parameter and a Closure as second parameter. Like this:
$this->EventBus->subscribe('FilterTestEvent', function(){/*Do Something*/});
It's called like this:
$filteredValue = $this->EventBus->filter('FilterTestEvent', $anyValue);
What I want now is to pass an array as reference to the Closure that then is changed in any way (here: add elements) and then return something as the filtered value:
$item_to_change = array('e1' => 'v1', 'e2' => 'v2');
$this->EventBus->subscribe('FilterTestEvent', function(&$item){
$item['new'] = 'LoremIpsum';
return true;
});
$filtered = $this->EventBus->filter('FilterTestEvent', $item_to_change);
Now I would a print_r($item_to_change) expect to look like the following:
Array
(
[e1] => v1
[e2] => v2
[new] => LoremIpsum
)
But instead it looks like the original array:
Array
(
[e1] => v1
[e2] => v2
)
The eventbus internally stores all closures and calls them if needed through call_user_func_array() with the closure as first argument and the value as the only argument array element.
How can I achieve what it's meant to do?
Source Code to the Eventbus: http://goo.gl/LAAO7B
Probably this line:
$filtered = $this->EventBus->filter('FilterTestEvent', $item_to_change);
is supposed to return a new filtered array, not modify the original one.
So check it:
print_r($filtered);
Passing by reference is possible by modifying a function (adding &):
function filter(&$array){ //Note & mark
$array['new_index'] = "Something new" ;
}
$array = array("a"=> "a");
filter($array); //The function now receives the array by reference, not by value.
var_dump($array); //The array should be modified.
Edit:
Make your callback return the filtered array:
$this->EventBus->subscribe('FilterTestEvent', function(&$item){
$item['new'] = 'LoremIpsum';
return $item ;
});
Passing by reference should not work here, because in the source code that $value variable is swapped with another value and returned after.
Ok. I found the answer. The filter function needs to be changed so that it accepts arrays as value, in which I can save the reference. For details see difference Revision 1 and Revision 2 of the Eventbus source code, here: goo.gl/GBocgl
To pass variables into functions, I do the following (as other people I'm sure):
function addNums($num1, $num2)
{
$num1 + $num2;
}
addNums(2, 2);
My question is how would I structure a function to act like Wordpress:
wp_list_categories('title_li=');
Essentially I am looking for a way to create a key/value pair in my functions.
Any advice is appreciated.
parse_str() should do what you want: http://www.php.net/parse_str
You can use parse_str to parse the string for arguments. The tricky thing is that you may not want to just allow any and all parameters to get passed in. So here's an example of only allowing certain parameters to be used when they're passed in.
In the following example, only foo, bar and valid would be allowed.
function exampleParseArgs($arg_string) {
// for every valid argument, include in
// this array with "true" as a value
$valid_arguments = array(
'foo' => true,
'bar' => true,
'valid' = true,
);
// parse the string
parse_str($arg_string, $parse_into);
// return only the valid arguments
return array_intersect_key($parse_into,$valid_arguments);
}
baz will be dropped because it is not listed in $valid_arguments. So for this call:
print_r(exampleParseArgs('foo=20&bar=strike&baz=50'));
Results:
Array
(
[foo] => 20
[bar] => strike
)
Additionally, you can browse the Wordpress Source code here, and of course by downloading it from wordpress.org. Looks like they do something very similar.