Left Join without "id_coloumn" of the second table in the main table

Left Join without "id_coloumn" of the second table in the main table

volnistii11volnistii11 Posts: 49Questions: 16Answers: 0
edited October 19 in Editor

Hello I have two tables. How do I properly set up a one-to-many relationship via left join.
Here's an example of two tables:

That is, I do not have an "id_change" column in the main table.

Here's the final table:

Correct display-display works for me.
But, it doesn't work for me:
1. Editing "DoumentNumber" in two tables at once (changes only in the main one);
2. Editing the "Change" field (does not change anything).

How can i fix this?

JS

<script>
    var editor;


    $(document).ready(function() {

        editor = new $.fn.dataTable.Editor( {
            ajax: {
                "url" : 'query_move_card.php',
            },
            table: "#empTable",



            fields: [

                {
                    label: "DocumentName:",
                    name: "main.DocumentName",
                    type:  "textarea"
                },
                {
                    type:  "textarea",
                    label: "DocumentNumber:",
                    name: "main.DocumentNumber"
                },


                {
                    label: "Change :",
                    name: "changes.Change",
                },



            ]
        } );

        // Activate an inline edit on click of a table cell
        $('#empTable').on( 'click', 'tbody td', function (e) {
            editor.bubble( this );
        } );

        table = new $('#empTable').DataTable({

            'processing': true,
            'serverSide': true,
            "lengthMenu": [[10, 25, 50, 1000000000], [10, 25, 50, "All"]],
            "pageLength": 25,
            dom: 'lBrtip',
            buttons: [
                'excelHtml5',
            ],
            select: true,

            'serverMethod': 'post',
            'ajax': {
                url:"query_move_card.php",

            },
            'columns': [


                { data: 'main.DocumentName' },
                { data: 'main.DocumentNumber' },


                { data: 'changes.Change' },



            ],

        });


    });
</script>

ServerScript

<?php


// DataTables PHP library
include("../../../../../DataTables/Editor-PHP-1.9.4/lib/DataTables.php");

// Alias Editor classes so they are easy to use
use
    DataTables\Editor,
    DataTables\Editor\Field,
    DataTables\Editor\Format,
    DataTables\Editor\Mjoin,
    DataTables\Editor\Options,
    DataTables\Editor\Upload,
    DataTables\Editor\Validate,
    DataTables\Editor\ValidateOptions;

// Build our Editor instance and process the data coming from _POST
Editor::inst($db, 'main', 'id')
    ->fields(
        Field::inst('main.DocumentName'),
        Field::inst('main.DocumentNumber'),

        Field::inst('changes.Change')

    )
    ->leftJoin('changes', 'changes.DocumentNumber = main.DocumentNumber')
    ->process($_POST)
    ->json();

Thank you for the attention

Answers

  • allanallan Posts: 54,881Questions: 1Answers: 8,601 Site admin

    Is a left join what you want here? A left join is 1:1 mapping, but it sounds like you have one-to-many here, which would be a use case for the Mjoin class.

    Allan

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