how to write price from stock_id to modal field

cpshart

Hi

I need to pass the stock price back into the modal price field, having selected the stock_id from the dropdown list, I may need to display the price as a message below the stock dropdown list also.

I am succeeding in passing the stock_id to the server and returning JSON, but the format and how I extract the price value back into the modal field, is where I am struggling.

In this example
symbol is AVON.LSE
price is 1744
stock_id is 290

So I need to display 1744 on the price field in the modal and display text
yesterday close price: 1744 under the symbol modal field box

Currently I am writing stock_id to both positions described above.

Extract of client javascript

**This code writes the stock_id to the modal price field box
**

    editor.dependent( 'dm_transactions.stock_id', function ( val, data, callback ) {
    $.ajax( {
        url: '../../Editor-PHP-1.9.0/controllers/ajax_stock_transactions.php',
       dataType: 'json',
        // pass stock_id value to server php script
        data: { "stock_id": val },
        } );
        editor.field("dm_transactions.price").set(editor.field('dm_transactions.stock_id').val());
    }),{
        event: 'keyup change'
    };

**This code writes the stock_id as a message below the modal symbol field box
**

    editor.dependent('dm_transactions.stock_id', function ( val, data, callback ){
        return { messages: { 'dm_transactions.stock_id':  'yesterday close price: ' + editor.field('dm_transactions.stock_id').val() }};        
    },{
    event: 'keyup change'
    });

This is the modal extract shown below

extract of server PHP script

$stock_id = $_GET['stock_id']; // manually setting variable for testing
$stock_array = array();

// check if variable is NOT blank pass JSON back to client 
if ($stock_id  <> "") {

echo "the value of stock_id is :" . $stock_id . ":" . "\n";

try {
    $pdo = new PDO(strtolower($sql_details['type']) . ":host=" . $sql_details['host'] . ";dbname=" . $sql_details['db'], $sql_details['user'], $sql_details['pass']);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully" . "\n\n"; 
    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }


$result = $pdo->query("SELECT id, symbol, name, price FROM dm_stocks WHERE id = $stock_id");
        foreach ($result as $row) {
                echo "" . $row['id'] . "";
                echo " : " . $row['symbol'] . "";
                echo " : " . $row['name'] . "";
                echo " : " . $row['price'] . "\n";

    array_push( $stock_array, array('symbol'=>$row['symbol'], 'price'=>$row['price'] ) );
        }
    echo json_encode($stock_array);
}


<?php
>
```
?>

the value of stock_id is :290:
Connected successfully

290 : AVON.LSE : Avon Rubber p.l.c : 1774
[{"symbol":"AVON.LSE","price":"1774"}]
```

[{"symbol":"AVON.LSE","price":"1774"}]

Please let me know if you need more code snippets.

Many Thanks

Colin

cpshart

Hi

Apologies for duplicate thread, I think the answer is to use values, I will check tomorrow as I am offline for the rest of the day travelling.

how to display the price on the modal in either
1/ the field given by dm_transactions.price

response from Allan on a previous call

Similar to the options property in the returned JSON you are currently using there is a values option for the JSON returned to dependent(). That can be used to set the value of the fields - e.g.:

{
    "options": {
        "symbol": [{
            "label": "BP..L",
            "value": "557.5"
        }, {
            "label": "BT.A.L",
            "value": "228.3"
        }, {
            "label": "HSBA.L",
            "value": "624.8"
        }, {
            "label": "LGEN.L",
            "value": "278.3"
        }, {
            "label": "RDSB.L",
            "value": "2445.5"
        }]
    },
    "values": {
        "dm_transactions.price": "{value}"
    }
}

Likewise you can specify any other fields in the values object that you want.

Allan

Thanks

Colin

cpshart

Hi

I should be grateful for some help on the client side to extract the value of dm_transactions.price using the "values" option for one sample stock. I have setup a JSON file on the server with the content as per above for a one stock

{"options": {"symbol": [{"label": "AZN.LSE","value": "7324"}]},"values": {"dm_transactions.price": "{value}"}}

The client file is as follows

    editor.dependent( 'dm_transactions.stock_id', function ( val, data, callback ) {
    $.ajax( {
        url: '../../Editor-PHP-1.9.0/controllers/ajax_stock_transactions_json.txt',
       dataType: 'json',
        // pass stock_id value to server php script
        data: { "stock_id": val },
        } );
/****************************************************************************           
1/ write price value into the price field on the modal form 
****************************************************************************/           
editor.field("dm_transactions.price").set(editor.field('dm_transactions.price').val());
    }),{
        event: 'keyup change'
    };
/****************************************************************************           
2/ write a message on closing price under stock selection field on form
****************************************************************************/           
    editor.dependent('dm_transactions.stock_id', function ( val, data, callback ){
        return { messages: { 'dm_transactions.stock_id':  'yesterday close price: ' + editor.field('dm_transactions.price').val() }};       
    },{
    event: 'keyup change'
    });

any help on the correct syntax of the client file to
1/write the price (from the JSON file 7324 in this case) under the stock_id field
and
2/write the price into the price field of the modal (editable by the user, i.e. not fixed)

Many Thanks

Colin

allan

I'm not quite getting something here - sorry. This line:

editor.field("dm_transactions.price").set(editor.field('dm_transactions.price').val());

is redundant. Its just writing its own value to itself. At its doing it before the Ajax action is completed as well.

If ../../Editor-PHP-1.9.0/controllers/ajax_stock_transactions_json.txt contains your JSON from above, then dm_transactions.price should contain {value} when dm_transactions.stock_id is changed.

If that isn't happening, can you give me a link to a page showing the issue so I can trace it through please.

Allan

cpshart

Hi Allan

Thanks for your response, I have sent you a private message.

Best regards

Colin