FEATURE #1452: add database migration for adding templates into database

2016-02-17 16:14:26 +01:00
parent 6a7402248a
commit ad457db740
1 changed files with 124 additions and 0 deletions
@@ -0,0 +1,124 @@
 <?php
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 class AddTemplateSupport extends Migration
 {
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        // drop FK in contents table to modules
        try {
            Schema::table('contents', function (Blueprint $table) {
                $table->dropForeign('fk_content_module1');
            });
        } catch (\Illuminate\Database\QueryException $e) {
            // probably foreign does not exist, try to remove one from migration
            try {
                Schema::table('contents', function (Blueprint $table) {
                    $table->dropForeign('contents_module_handler_foreign');
                });
            } catch (\Illuminate\Database\QueryException $ex) {
                // ignore this error
            }
        }
        // drop primary index in modules (previously was on handler column)
        Schema::table('modules', function (Blueprint $table) {
            $table->dropIndex('PRIMARY');
        });
        // create new column ID, set it autoincrement and set unique index to handler
        Schema::table('modules', function (Blueprint $table) {
            $table->integer('id', true)
                  ->first();
            $table->unique('handler');
        });
        // add again FK constraint to contents -> modules relationship
        Schema::table('contents', function (Blueprint $table) {
            $table->foreign('module_handler')
                  ->references('handler')
                  ->on('modules')
                  ->onDelete('cascade')
                  ->onUpdate('cascade');
        });
        // create new table with templates
        Schema::create('templates', function (Blueprint $table) {
            $table->integer('id', true);
            $table->integer('module_id')
                  ->comment('Template belongs to module specified with this ID.');
            $table->timestamps();
            $table->string('template_name', 128)
                  ->comment('Template name used for rendering page. Use namespace::dir.template format.');
            $table->string('path')
                  ->comment('Path to this template. Given as relative path for theme directory.');
            $table->string('name')
                  ->comment('Human readable name of given template');
            $table->mediumText('description')
                  ->comment('Description of this template.');
            $table->boolean('editable')
                  ->comment('Can this template be edited?');
            $table->index('module_id');
            $table->index('template_name');
            $table->unique(['module_id', 'template_name']);
        });
        // add FK to templates->modules
        Schema::table('templates', function (Blueprint $table) {
            $table->foreign('module_id')
                  ->references('id')
                  ->on('modules')
                  ->onDelete('cascade')
                  ->onUpdate('cascade');
        });
        // add column to contents - template name
        Schema::table('contents', function (Blueprint $table) {
            $table->string('template', 128)
                  ->after('module_handler')
                  ->comment('Template used for rendering this content page. [This should be FK to templates (template_name), however I was not able to create the constraint...]');
            $table->index('template');
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('templates');
        Schema::table('contents', function (Blueprint $table) {
            $table->dropForeign('contents_module_handler_foreign');
        });
        Schema::table('modules', function (Blueprint $table) {
            $table->dropColumn('id');
            $table->dropIndex('modules_handler_unique');
            $table->primary('handler');
        });
        Schema::table('contents', function (Blueprint $table) {
            $table->dropColumn('template');
            $table->foreign('module_handler')
                  ->references('handler')
                  ->on('modules')
                  ->onDelete('cascade')
                  ->onUpdate('cascade');
        });
    }
 }