PostgreSQL 序列的 Laravel 模式

Question

这些是我的要求：

1. 我有一张桌子(upload_training_files)
2. 字段为id、organisation_id（外）、year_id（外）、created_by、created_at、updated_by、updated_at、file_path。
3. organisation_id 字段是指organisations 的id 字段。它应该是auto_incremented，并且应该用一个序列表（upload_training_file_organisation_id_fk_seq）来标识。

经过多次尝试，我在 Laravel 中未能做到这一点。这是我的架构：

<?php

    use Illuminate\Database\Schema\Blueprint;
    use Illuminate\Database\Migrations\Migration;

    class CreateUploadTrainingFileTable extends Migration {

    public function up()
    {
        Schema::create('upload_training_file', function(Blueprint $table) {
            $table->bigincrements('id');
            $table->biginteger('organisation_id_fk')->unsigned()->unique();
            $table->foreign('organisation_id_fk')->references('organisation_id')->on('organisations');
            $table->biginteger('year_id_fk')->unsigned()->unique();
            $table->foreign('year_id_fk')->references('year_id')->on('year_of_performance');
            $table->biginteger('created_by')->nullable();
            $table->time('created_at')->nullable();
            $table->biginteger('updated_by');
            $table->time('updated_at')->nullable();
            $table->string('file_path')->nullable();
        });
    }

    public function down()
    {
        Schema::drop('upload_training_file');
    }
}

这是数据库表的快照

Answer 1

解决了。 :)

在分配每个新的 auto increment 字段之前，您必须删除主键。

<?php

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUploadTrainingFileTable extends Migration {

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('upload_training_file', function(Blueprint $table) {
            $table->bigincrements('upload_training_file_id');
        });

        Schema::table('upload_training_file', function($table)
        {
            $table->dropPrimary('upload_training_file_upload_training_file_id_primary');
        });

        Schema::table('upload_training_file', function($table)
        {
            $table->bigincrements('organisation_id_fk')->unsigned()->after('id');;
            $table->foreign('organisation_id_fk')->references('organisation_id')->on('organisation');
        });

        Schema::table('upload_training_file', function($table)
        {
            $table->dropPrimary('upload_training_file_organisation_id_fk_primary');
        });

        Schema::table('upload_training_file', function($table)
        {
            $table->bigincrements('year_id_fk')->unsigned()->after('organisation_id_fk');;
            $table->foreign('year_id_fk')->references('year_id')->on('year_of_performance');
            $table->biginteger('created_by')->nullable();
            $table->time('create_date')->nullable();
            $table->biginteger('updated_by')->nullable;
            $table->time('update_date')->nullable();
            $table->string('file_path')->nullable();
        });

        Schema::table('upload_training_file', function($table)
        {
            $table->dropPrimary('upload_training_file_year_id_fk_primary');
            $table->primary('upload_training_file_id');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('upload_training_file');
    }

}