The json column in the database has a data like this:
{"data": {"total":15,"time":25}}
This is the data I want to update within it:
{"total":22,"time":5}
But when updating the data via Laravel like this:
$json_data = json_encode(['total' => 22, ...]);
$table->where->update(['column->data' => $json_data])
the result is as follows:
{"data": "{\"total\":22,\"time\":5}"}
When I pass the array without json_encodeing it, it raises an error instead.
How can I assign a non-primitive value directly to a property in a JSON field?
I think the only solution is as follows:
$data = ['total' => 22, 'time' => 5];
$table->where->update([
'column->data->total' => $data['total'] ,
'column->data->time' => $data['time']
])
I searched to batch update the contents of a json key without double quotes but couldn't find it.
Either the content will be pulled completely and then edited and sent again. Or individual updates will be made as above. Please let me know if you find a better solution.
seems it got double json encoded, first you json_encode'ed it manually, then the $table->where->update-function json_encode'ed it again. try replacing
$json_data = json_encode(['total' => 22, ...]);
with just
$json_data = ['total' => 22, ...];
Related
My data looks like:
countyFIPS,County Name,State,stateFIPS,1/22/20,1/23/20,1/24/20,1/25/20,....
1001,Autauga County,AL,1,0,0,0,0,0,0,0,0,....
...
I've been able to retrieve it using an Ajax call and collect it into a simple PHP array, then convert it to json to use in my javascript application. While it appears that the data is all counties of a state, followed by the same configuration for the next state, there is no guarantee that it won't be mixed up in some later set of data.
I'm an old Fortran programmer, and would tend to build a hash table for the "states", then check if the state exists in the hash table. If not create a new hash table and add this empty hash table as the value for the key with the name of the state to the "state" hash table. Then check the state hash table to see if it has a key for the county. Again, if it doesn't, then add an empty array as the value for the key with the county name and add that to the state hash table, then proceed to put the values for that row into the county array. I know this will work, but thought maybe there was some clever way to use associative arrays in PHP to accomplish the same thing.
I look at array_filter, but can't seem to figure out how to adapt it to this case. Are there other functions that might work here?
Then, once I have this structure of
$nested_object = { state1=>{county1,county2,county3...},state2=>{counties}},
and those counties have:
county=>[values],
how can I easily convert this to a json structure? Should it have other keys like "states", and within a state "counties". From looking at Haroldo's question "Convert a PHP object to an associative array" of Dec 3, 2010, it appears like I would use:
$array = json_decode(json_encode($nested_object), true);
Will this give me the structure I am looking for?
I want to end up with a structure that I can ask for the states as a set of keys, then for a selected state ask for the counties in that state as a set of keys, and upon selecting one, get the array of values for that state/county. This has to run on a server with potentially a large amount of data and a moderate amount of hits per unit time so I wanted as reasonably efficient way as possible.
I want to end up with a structure that I can ask for the states as a set of keys, then for a selected state ask for the counties in that state as a set of keys, and upon selecting one, get the array of values for that state/county
Okay, so you need something like:
$structure = [
'AL' => [
'counties' => [
'FIPS1' => 'County1',
'FIPS2' => 'County2',
],
'data' => [
'FIPS1' => [
[ 'date1' => value1, 'date2' => value2, 'date3' => value3... ]
],
],
],
'AK' => [ ... ]
];
You can do that using array_map() and a lambda function writing to $structure, but... in my experience, it is not worth it.
Best to do like you said:
while ($row = get_another_row()) {
$countyFIPS = array_unshift($row);
$countyName = array_unshift($row);
$stateName = array_unshift($row);
$stateFIPS = array_unshift($row);
if (!array_key_exists($stateName, $structure)) {
$structure[$stateName] = [
'counties' => [ ],
'data' => [ ],
];
}
if (!array_key_exists($countyFIPS, $structure[$stateName]['counties'])) {
$structure[$stateName]['counties'][$countyFIPS] = $countyName;
$structure[$stateName]['data'][$countyFIPS] = [ ];
}
// Now here you will have $headers, obtained from the header row unshifting
// the first four fields.
foreach ($headers as $i => $key) {
$structure[$stateName]['data'][$countyFIPS][$key] = $row[$i];
}
}
This way if you add two CSVs with different dates, the code will still work properly. Dates will not be sorted though, but you can do that with a nested array_map and the aksort function.
To output this in JSON, just use json_encode on $structure.
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 want to add this symbol [ ] to the column "Post_images"
with basis data sql server
Like this,
“post_images” : “ht tp://img*sample*com/gambar1*jpg”, “ht tp://img*sample*com/gambar2*jpg”
to
“post_images” : [“ht tp://img*sample*com/gambar1*jpg”, “ht tp://img*sample*com/gambar2*jpg”]
In json the [] indicates a set of items.
Assuming you have an array with both strings inside then calling json_encode(array) should add the [ ].
See also this tutorial for more detais.
http://www.tutorialspoint.com/json/json_php_example.htm
Please do not write json on your own. Use the php functions instead.
You have to place array for post_images
it mean if you have $data which you json_encodeing you should add your post images as sub array not string. Example
$data = array(
'param1' => "data ...",
'post_images' => array(
“ht tp://img*sample*com/gambar1*jpg”,
“ht tp://img*sample*com/gambar1*jpg”
);
);
echo json_encode($data); // will output what you where looking for
Do the the following:
'["ht tp://imgsamplecom/gambar1*jpg", "ht tp://imgsamplecom/gambar2*jpg"]'
Example:
http://sqlfiddle.com/#!9/971279/1
I search a lot in stack and google try to find the answer which seems to be easy but I'm still stuck with it
I write a code to encode json with values I wanted from . and I would like to add a key / value to the JSON
the JSON is as following structure
{
- files: [
{
title: "works",
- tracks: [
{
title: "File",
format: "mp3"
}
]
},
-{
title: "season1",
tracks: [
{
title: "Button-1",
format: "wav"
},
-{
title: "Beep-9",
format: "wav"
}
]
}
]
}
I want to add to that a key and its value at the beginning to the json as properties under the title files , I mean that can be read by code as
json[files][new_key]
I tried to set that value like this
$json['new_key'] = "new_value";
but this causes adding numbers to the arrays in json , I don't why they numbered
this numbers affect my reading way of the json as JSONModel in my iOS app
so , I hope you can help me
thanks in advance
Assuming that the new value you want to add varies by file, you would need to loop through $json[files] and insert them per key/value pair.
<?php
for($i=0; $i<count($json); $i++)
$json[files][$i]["new_key"] = "value";
?>
I'm still not sure what you have exactly, but it seems you are trying to manipulate the json string.
If done correctly, that is probably the most efficient solution, but what you could also do is:
use json_decode to generate an array from your json string;
locate the correct section / sub-array where you want to add your data;
use array_unshift to prepend your new key - value pair;
use json_encode to generate a json string from your complete array.
The reason you're getting numbers appearing is because you're adding a key to an array (which functions more or less as a list in JS). So before you basically have the object "files" as a list of objects zero-indexed like any other JS array. When you add the key, JS simply adds your key to the end of your present keys (in your case 0 and 1).
It seems like you have a list of multimedia objects where each has a title and a list of tracks. The most straightforward way to solve your issue would be as follows:
$fileItem['title'] = 'works';
$fileItem['tracks'] = array(
array(
'title' => 'File',
'format' => 'mp3'
)
);
$json['files'][] = $fileItem;
$fileItem['title'] = 'season1';
$fileItem['tracks'] = array(
array(
'title' => 'Button-1',
'format' => 'wav'
),
array(
'title' => 'Beep-9',
'format' => 'wav'
)
);
$json['files'][] = $fileItem;
Then you JSON encode it and return it as you normally would. You can put the above in a loop as well. I lack enough context to recommend exactly how.
I use hightchartPHP to display chart. But being a bug, hope people take the time to read and help me.
$chart->series[] = array(
'name' => 'Sales',
'data' => array(1,2,3,4,5,6));
Code run.
[1,2,3,4,5,6]
But, i get data mysql
$chart->series[] = array(
'name' => 'Sales',
'data' => array($sales->monthly_sales()));
then automatic highchart add quote . Code not run.
["1,2,3,4,5,6"].
I tried by add json_encode. But code not run.
["\"1,2,3,4,5,6\""]
Try using JSON.parse before you send data (string) into a series data.
series : [{
data: JSON.parse(data)
}]
Because you get string with php not a javascript array of numbers! another easy and not good approach is to remove quotes from your php string $sales->monthly_sales() with something like this:
str_replace('"', "", $string);