{"id":1016,"date":"2019-01-09T14:47:46","date_gmt":"2019-01-09T05:47:46","guid":{"rendered":"https:\/\/qol-kk.com\/wp2\/?p=1016"},"modified":"2019-01-09T17:03:12","modified_gmt":"2019-01-09T08:03:12","slug":"post-1016","status":"publish","type":"post","link":"https:\/\/qol-kk.com\/wp2\/blog\/2019\/01\/09\/post-1016\/","title":{"rendered":"Laravel\uff1aController\u304b\u3089View\u306b\u6e21\u3057\u305f\u914d\u5217\u304c\u7a7a\u304b\u8abf\u3079\u308b\u65b9\u6cd5"},"content":{"rendered":"

Controller\u304b\u3089View\u306b\u6e21\u3057\u305f\u914d\u5217\u304c\u7a7a\u304b\u8abf\u3079\u308b<\/h2>\n

\u3088\u304f\u8003\u3048\u308c\u3070\u5f53\u7136\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u601d\u3044\u306e\u307b\u304b\u30cf\u30de\u3063\u305f\u306e\u3067\u5099\u5fd8\u9332\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n

\u3084\u308a\u305f\u3044\u3053\u3068\u306fContoroller\u306b\u3066Where\u53e5\u3067\u62bd\u51fa\u3057\u305f\u3082\u306e\u306b\u5024\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u306e\u78ba\u8a8d\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001\u5546\u54c1\u767b\u9332\u306f\u51fa\u6765\u3066\u3044\u3066\u3082\u30b5\u30a4\u30ba\u306e\u8a18\u8f09\u304c\u306a\u3044\u6642\u3001\u62bd\u51fa\u7d50\u679c\u3067\u5206\u5c90\u3055\u305b\u308b\u51e6\u7406\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u306f\u304a\u3055\u3089\u3044 Null\u30680(\u30bc\u30ed)\u3068\u201d\u201d\u306b\u3064\u3044\u3066<\/h3>\n
\n
    \n
  1. Null\uff1a\u5024\u304c\u306a\u3044<\/li>\n
  2. \u672a\u5b9a\u7fa9\uff1a\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3057\u306a\u3044<\/li>\n
  3. 0\uff1a0\u3068\u3044\u3046\u5024\u304c\u5b58\u5728\u3057\u3066\u3044\u308b<\/li>\n
  4. \u201d\u201d\uff1a\u7a7a\u767d(\u5024\u306e\u8a18\u5165\u304c\u306a\u3044)\u3068\u3044\u3046\u5024\u304c\u5b58\u5728\u3057\u3066\u3044\u308b<\/li>\n<\/ol>\n<\/div>\n

    \u4eca\u56de\u53d6\u5f97\u3057\u305f\u3044\u306e\u306f\u300e\u62bd\u51fa\u3055\u308c\u305f\u304b\u5426\u304b\u300f\u3067\u3042\u308b\u305f\u3081\u3001\u30100\u3011\u3010\u201d\u201d\u3011\u306f\u5024\u304c\u3042\u308b\u3068\u5224\u65ad\u3055\u305b\u305f\u3044\u3067\u3059\u3002
    \n\u3064\u307e\u308a\u3001\u62bd\u51fa\u7d50\u679c\u304cNull\u3067\u3042\u308b\u304b\u5426\u304b\u306e\u78ba\u8a8d\u3067\u3059\u3002<\/p>\n

    \u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u306e\u30b9\u30af\u30ea\u30d7\u30c8<\/h3>\n
        public function edit($id)\r\n    {\r\n        $saleitem = Saleitem::find($id);\r\n        $saleitemsizes = Saleitemsize::where('saleitem_id',$id)->get();\r\n        \r\n        return view('saleitems.edit', \r\n                compact\r\n                    (\r\n                        'saleitem',\r\n                        'saleitemsizes'\r\n                    )\r\n                );\r\n    }<\/pre>\n
    \u5546\u54c1\u60c5\u5831\uff1asaleitems\u30c6\u30fc\u30d6\u30eb\u304b\u3089GET\u3067$id\u3092\u53d7\u53d6\u308a\u3001\u305d\u306e\uff04id\u3092\u5229\u7528\u3057\u3066saleitemsizes\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5024\u3092\u53d6\u5f97\u3001\u30d3\u30e5\u30fc\uff1asaleitems.edit \u3078\u30c7\u30fc\u30bf\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
    \u30d3\u30e5\u30fc\uff1aedit \u306e\u30b9\u30af\u30ea\u30d7\u30c8<\/h3>\n
    \u307e\u305a\u306f\u89e3\u7b54\u304b\u3089<\/p>\n
    \/* if\u6587\u3067Null\u5206\u5c90 *\/\r\n\r\n@if(!isset($saleitemsizes[0]))\r\n    \u203b\u5024\u304c\u3042\u308a\u307e\u305b\u3093\u3002\r\n@else\r\n  \u3000\u203b\u5024\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\r\n    @foreach($saleitemsizes as $saleitemsize)\r\n        {{@saleitemsize}}\r\n    @endforeach\r\n@endif<\/pre>\n
    \u4e0b\u306f\u4f55\u5ea6\u3084\u3063\u3066\u3082\u3046\u307e\u304f\u3044\u304b\u306a\u304b\u3063\u305f\u9593\u9055\u3044\u306e\u4f8b\u3067\u3059\u3002<\/p>\n
    \/* if\u6587\u3067Null\u5206\u5c90 *\/\r\n\r\n@if(!isset($saleitemsizes))\r\n    \u203b\u5024\u304c\u3042\u308a\u307e\u305b\u3093\u3002\r\n@else\r\n  \u3000\u203b\u5024\u304c\u5b58\u5728\u3057\u307e\u3059\u3002\r\n    @foreach($saleitemsizes as $saleitemsize)\r\n        {{@saleitemsize}}\r\n    @endforeach\r\n@endif<\/pre>\n
    \u9593\u9055\u3044\u306f\u300eController\u304b\u3089\u6e21\u3055\u308c\u305f\u914d\u5217 \uff04saleitemsizes \u305d\u306e\u3082\u306e\u3067\u5b58\u5728\u78ba\u8a8d\u3092\u3057\u3066\u3044\u308b\u300f\u4e8b\u3067\u3059\u3002<\/p>\n
    \u3058\u3083\u3042\u3001\u914d\u5217\u306b\u5024\u304c\u7121\u3044\u3093\u3060\u304b\u3089(\uff04saleitemsizes ==\"\")\u3067\u3044\u3044\u3093\u3058\u3083\u306d\uff1f\u3068\u3082\u601d\u3044\u307e\u3057\u305f\u304c\u3053\u308c\u3082NG\u3002<\/p>\n
    \u3088\u304f\u8003\u3048\u308c\u3070\u30d9\u30bf\u6253\u3061\u3057\u3066\u305f\u6642\u3001forech\u3067\u6700\u521d\u306e\u30ec\u30b3\u30fc\u30c9\u53d6\u5f97\u3057\u3066\u6709\u7121\u78ba\u8a8d\u3057\u3066\u305f\u306a\u3068\u601d\u3044\u3001\uff04saleitemsizes[0]\u3068\u3057\u305f\u3089\u60f3\u5b9a\u3057\u3066\u3044\u305f\u52d5\u4f5c\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
    Null\u306e\u5206\u5c90\u306f\u6307\u793a\u306e\u4ed5\u65b9\u3067\u5024\u304c\u5909\u308f\u308a\u307e\u3059<\/h3>\n
    \u4eca\u56de\u306f\u30ec\u30b3\u30fc\u30c9\u306e\u6307\u793a\u306e\u4ed5\u65b9\u304c\u554f\u984c\u3067\u3057\u305f\u304c\u3001\u30d9\u30bf\u6253\u3061\u306e\u3053\u308d\u304b\u3089\u60a9\u3080\u306e\u304c\u6761\u4ef6\u306b\u3088\u308a\u7b54\u3048\u304c\u5909\u308f\u308b\u4e8b\u3002<\/p>\n
    \u30bc\u30ed\u3001null\u3001\u201d\u201d \u3092\u3069\u3046\u3068\u308b\u304b\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
    \u95a2\u6570 \/ \u9805\u76ee<\/th>\n$a = \u672a\u5b9a\u7fa9<\/th>\n$a = NULL<\/th>\n$a = \u201d\u201d<\/th>\n$a = 0<\/th>\n<\/tr>\n
    $a == Null<\/th>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\n<\/tr>\n
    $a == \"\"<\/th>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\n<\/tr>\n
    $a == 0<\/th>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\n<\/tr>\n
    $a === Null<\/th>\ntrue<\/td>\ntrue<\/td>\nfalse<\/td>\nfalse<\/td>\n<\/tr>\n
    $a === \"\"<\/th>\nfalse<\/td>\nfalse<\/td>\ntrue<\/td>\nfalse<\/td>\n<\/tr>\n
    $a === 0<\/th>\nfalse<\/td>\nfalse<\/td>\nfalse<\/td>\ntrue<\/td>\n<\/tr>\n
    is_null($a)<\/th>\ntrue<\/td>\ntrue<\/td>\nfalse<\/td>\nfalse<\/td>\n<\/tr>\n
    isset($a)<\/th>\nfalse<\/td>\nfalse<\/td>\ntrue<\/td>\ntrue<\/td>\n<\/tr>\n
    empty($a)<\/th>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\ntrue<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \u95a2\u6570\u3092\u66d6\u6627\u306b\u3059\u308b( == \u3067\u7d50\u3076)\u5834\u5408\u306f \u30100== \"\" == Null == \u672a\u5b9a\u7fa9 ==\"0\"\u3011\u5168\u3066\u3067TRUE\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
    \u5024\u306e\u5224\u5225\u3092\u53b3\u683c\u306b\u3057\u305f\u6642(===\u3067\u7d50\u3076)\u5834\u5408\u3001\u3010Null == \u672a\u5b9a\u7fa9\u3011\u4ee5\u5916\u306f\u3059\u3079\u3066\u5225\u306e\u3082\u306e\u3068\u3057\u3066\u8a8d\u8b58\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u70ba\u3001$a=Null \u3067\u3042\u3063\u3066\u3082 @if($a===\"\")\u3068\u6307\u793a\u3057\u305f\u5834\u5408FALSE\u304c\u8fd4\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n
    \u4eca\u56de\u306e\u3010\u5546\u54c1\u30b5\u30a4\u30ba\u3011\u306e\u4f8b\u3067\u306f\u3001\u30ab\u30e9\u30e0\u306b\u7a7a\u767d\u30840\u304c\u5165\u3063\u3066\u3044\u305f\u5834\u5408\u306f\u62bd\u51fa\u3092\u3057\u305f\u3044\u306e\u3067\u3001\u5206\u5c90\u306e\u6307\u793a\u306f\u4ee5\u4e0b3\u3064\u306e\u3069\u308c\u304b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    \n
      \n
    • @if($a === Null)<\/li>\n
    • @if(is_null($a))<\/li>\n
    • @if(!isset($a))\u3000\u203bisset\u3092\uff01\u3067\u5426\u5b9a\u3057\u3066\u3044\u308b\u305f\u3081\u3010\u5b58\u5728\u304c\u78ba\u8a8d\u3067\u304d\u306a\u3044\u5834\u5408\u3011\u306e\u6761\u4ef6\u3068\u306a\u308b<\/li>\n<\/ul>\n<\/div>\n
      \u307e\u3068\u3081<\/h3>\n
      \u30ec\u30b3\u30fc\u30c9\u306e\u5b58\u5728\u78ba\u8a8d\u306f\u6700\u521d\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u6307\u5b9a\u3059\u308b\u3002<\/div>\n
      \u306f\u3044\u3001\u3088\u304f\u8003\u3048\u308c\u3070\u5f53\u305f\u308a\u524d\u306e\u4e8b\u3067\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      Controller\u304b\u3089View\u306b\u6e21\u3057\u305f\u914d\u5217\u304c\u7a7a\u304b\u8abf\u3079\u308b \u3088\u304f\u8003\u3048\u308c\u3070\u5f53\u7136\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u601d\u3044\u306e\u307b\u304b\u30cf\u30de\u3063\u305f\u306e\u3067\u5099\u5fd8\u9332\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002 \u3084\u308a\u305f\u3044\u3053\u3068\u306fContoroller\u306b\u3066Where\u53e5\u3067\u62bd\u51fa\u3057\u305f\u3082\u306e\u306b\u5024\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u306e […]<\/p>\n","protected":false},"author":1,"featured_media":944,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[34],"tags":[255,153,99,256,98,53,254,45],"class_list":["post-1016","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php-memorandum","tag-if","tag-laravel","tag-mysql","tag-null","tag-php","tag-53","tag-254","tag-45"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/qol-kk.com\/wp2\/wp-content\/uploads\/2018\/11\/laravel_logo.png","_links":{"self":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/1016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/comments?post=1016"}],"version-history":[{"count":0,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/posts\/1016\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media\/944"}],"wp:attachment":[{"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/media?parent=1016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/categories?post=1016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qol-kk.com\/wp2\/wp-json\/wp\/v2\/tags?post=1016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}