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<?php
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use Illuminate\Database\Migrations\Migration;
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use Illuminate\Database\Schema\Blueprint;
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use Illuminate\Support\Facades\Schema;
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class WorkOrderLogsAddForeignId extends Migration
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{
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/**
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* Run the migrations.
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*
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* @return void
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*/
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public function up()
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{
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Schema::table('gl_work_order_logs', function (Blueprint $table) {
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// 字段已存在,给字段添加外键约束
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$table->foreign('work_order_id')
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->references('id')->on('gl_work_orders')
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->onDelete('cascade'); // 设置级联删除
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});
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}
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/**
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* Reverse the migrations.
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*
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* @return void
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*/
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public function down()
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{
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Schema::table('gl_work_order_logs', function (Blueprint $table) {
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// 删除外键约束
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$table->dropForeign(['work_order_id']);
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});
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}
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} |
...
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...
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