Magento 2 安装数据表

第1步：安装脚本

首先，我们将为CRUD模型创建数据库表。为此，我们需要插入安装文件

app/code/Mageplaza/HelloWorld/Setup/InstallSchema.php

　　code:

<?php
/**
 * Created by PhpStorm.
 * User: jerryxu
 * Date: 2018/8/11
 * Time: 上午12:22
 */

namespace Mc\helloworld\Setup;

class InstallSchema implements \Magento\Framework\Setup\InstallSchemaInterface
{

    public function install(\Magento\Framework\Setup\SchemaSetupInterface $setup, \Magento\Framework\Setup\ModuleContextInterface $context)
    {
        $installer = $setup;
        $installer->startSetup();
        if (!$installer->tableExists('mc_helloworld_post')) {
            $table = $installer->getConnection()->newTable(
                $installer->getTable('mc_helloworld_post')
            )
                ->addColumn(
                    'post_id',
                    \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                    null,
                    [
                        'identity' => true,
                        'nullable' => false,
                        'primary'  => true,
                        'unsigned' => true,
                    ],
                    'Post ID'
                )
                ->addColumn(
                    'name',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    255,
                    ['nullable => false'],
                    'Post Name'
                )
                ->addColumn(
                    'url_key',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    255,
                    [],
                    'Post URL Key'
                )
                ->addColumn(
                    'post_content',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    '64k',
                    [],
                    'Post Post Content'
                )
                ->addColumn(
                    'tags',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    255,
                    [],
                    'Post Tags'
                )
                ->addColumn(
                    'status',
                    \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                    1,
                    [],
                    'Post Status'
                )
                ->addColumn(
                    'featured_image',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                    255,
                    [],
                    'Post Featured Image'
                )
                ->addColumn(
                    'created_at',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TIMESTAMP,
                    null,
                    ['nullable' => false, 'default' => \Magento\Framework\DB\Ddl\Table::TIMESTAMP_INIT],
                    'Created At'
                )->addColumn(
                    'updated_at',
                    \Magento\Framework\DB\Ddl\Table::TYPE_TIMESTAMP,
                    null,
                    ['nullable' => false, 'default' => \Magento\Framework\DB\Ddl\Table::TIMESTAMP_INIT_UPDATE],
                    'Updated At')
                ->setComment('Post Table');
            $installer->getConnection()->createTable($table);

            $installer->getConnection()->addIndex(
                $installer->getTable('mc_helloworld_post'),
                $setup->getIdxName(
                    $installer->getTable('mc_helloworld_post'),
                    ['name','url_key','post_content','tags','featured_image'],
                    \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_FULLTEXT
                ),
                ['name','url_key','post_content','tags','featured_image'],
                \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_FULLTEXT
            );
        }
        $installer->endSetup();
    }
}

请注意，Magento将在安装模块时首次自动运行此文件。如果之前安装了模块，则需要升级模块并将表创建代码写入该文件夹中的UpgradeSchema.php，并将属性更改为setup_version大于当前安装版本的module.xmlat app/code/Mageplaza/HelloWorld/etc/module.xml。　　
内容如下：

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
    <module name="Mc_Mysize" setup_version="1.1.0">
    </module>
</config>

在module.xml文件中，我们改变了属性1.1.0大于setup_version 文件： app/code/Mageplaza/HelloWorld/Setup/UpgradeSchema.php

namespace mc\HelloWorld\Setup;

use Magento\Framework\Setup\UpgradeSchemaInterface;
use Magento\Framework\Setup\SchemaSetupInterface;
use Magento\Framework\Setup\ModuleContextInterface;

class UpgradeSchema implements UpgradeSchemaInterface
{
    public function upgrade( SchemaSetupInterface $setup, ModuleContextInterface $context ) {
        $installer = $setup;

        $installer->startSetup();

        if(version_compare($context->getVersion(), '1.1.0', '<')) {
            if (!$installer->tableExists('mc_helloworld_post')) {
                $table = $installer->getConnection()->newTable(
                    $installer->getTable('mc_helloworld_post')
                )
                    ->addColumn(
                        'post_id',
                        \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                        null,
                        [
                            'identity' => true,
                            'nullable' => false,
                            'primary'  => true,
                            'unsigned' => true,
                        ],
                        'Post ID'
                    )
                    ->addColumn(
                        'name',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                        255,
                        ['nullable => false'],
                        'Post Name'
                    )
                    ->addColumn(
                        'url_key',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                        255,
                        [],
                        'Post URL Key'
                    )
                    ->addColumn(
                        'post_content',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                        '64k',
                        [],
                        'Post Post Content'
                    )
                    ->addColumn(
                        'tags',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                        255,
                        [],
                        'Post Tags'
                    )
                    ->addColumn(
                        'status',
                        \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                        1,
                        [],
                        'Post Status'
                    )
                    ->addColumn(
                        'featured_image',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                        255,
                        [],
                        'Post Featured Image'
                    )
                    ->addColumn(
                        'created_at',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TIMESTAMP,
                        null,
                        ['nullable' => false, 'default' => \Magento\Framework\DB\Ddl\Table::TIMESTAMP_INIT],
                        'Created At'
                    )->addColumn(
                        'updated_at',
                        \Magento\Framework\DB\Ddl\Table::TYPE_TIMESTAMP,
                        null,
                        ['nullable' => false, 'default' => \Magento\Framework\DB\Ddl\Table::TIMESTAMP_INIT_UPDATE],
                        'Updated At')
                    ->setComment('Post Table');
                $installer->getConnection()->createTable($table);

                $installer->getConnection()->addIndex(
                    $installer->getTable('mc_helloworld_post'),
                    $setup->getIdxName(
                        $installer->getTable('mc_helloworld_post'),
                        ['name','url_key','post_content','tags','featured_image'],
                        \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_FULLTEXT
                    ),
                    ['name','url_key','post_content','tags','featured_image'],
                    \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_FULLTEXT
                );
            }
        }

        $installer->endSetup();
    }
}

　　在此之后请运行此命令行：

php bin/magento setup:upgrade && php bin/magento setup:static-content:deploy -f

InstallSchema.php 用于创建数据库结构。如果要将数据安装到创建的表中，则需要使用 app/code/Mageplaza/HelloWorld/Setup/InstallData.php

请查看Magento中的一些InstallData文件，了解如何使用它。
```
- vendor/magento/module-tax/Setup/InstallData.php
- vendor/magento/module-customer/Setup/InstallData.php
- vendor/magento/module-catalog/Setup/InstallData.php
```
如上所述，那些安装文件将用于第一次安装模块。如果要在升级模块时更改数据库，请尝试使用UpgradeSchema.php 和 UpgradeData.php。

完成创建

Magento 2 安装数据表

Magento 2 安装数据表

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