Laravel PostgreSQL 序列的架构

Question

这些是我的要求：

我有一个table(upload_training_files)
字段是id, organisation_id(foreign), year_id(foreign), created_by, created_at, updated_by, updated_at, file_path.
organisation_id字段引用了organisations的id字段。它应该是 auto_incremented 并且还应该用序列 table(upload_training_file_organisation_id_fk_seq).

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');
    }
}

这是数据库的快照table

Answer 1

解决了。 :)

您必须在分配每个新的 auto increment 字段之前删除主键。

<?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');
    }

}

Laravel PostgreSQL 序列的架构

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