投稿時間:2021-12-18 09:41:00 RSSフィード2021-12-18 09:00 分まとめ(39件)

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IT	気になる、記になる…	Spigen、対象製品を最大40％オフで販売する｢2021年 Spigenハッピークリスマスセール｣を開催中	https://taisy0.com/2021/12/18/149894.html	spigen	2021-12-17 23:37:56
IT	気になる、記になる…	Apple、テスター向けに｢macOS Monterey 12.2 Public Beta 1｣をリリース	https://taisy0.com/2021/12/18/149892.html	apple	2021-12-17 23:30:29
IT	気になる、記になる…	Apple、開発者に対し｢iOS 15.3 beta 1｣や｢iPadOS 15.3 beta 1｣などを配信開始	https://taisy0.com/2021/12/18/149890.html	apple	2021-12-17 23:27:57
TECH	Engadget Japanese	独自色の強いMVNO「トーンモバイル」がドコモの「エコノミーMVNO」を求めた理由（佐野正弘）	https://japanese.engadget.com/tone-234029586.html	独自色の強いMVNO「トーンモバイル」がドコモの「エコノミーMVNO」を求めた理由佐野正弘MVNOのサービスをドコモショップで販売したり、dポイントと連携したりするなどして、小容量・低価格を求めるユーザーに応えるNTTドコモの「エコノミーMVNO」。	2021-12-17 23:40:29
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] 楽天モバイルはどう向き合うのか、iPhone利用者に不具合	https://www.itmedia.co.jp/business/articles/2112/18/news035.html	iphone	2021-12-18 08:45:00
IT	ITmedia 総合記事一覧	[ITmedia ビジネスオンライン] CDが苦戦しているのに、なぜ曲を取り込む「ラクレコ」は売れているのか	https://www.itmedia.co.jp/business/articles/2112/18/news016.html	itmedia	2021-12-18 08:12:00
js	JavaScriptタグが付けられた新着投稿 - Qiita	javascriptでRPG＃８	https://qiita.com/rurukun82/items/21e111030ccb0460e9d7	mainjs中略constctxfontpxmonospaceキャンバスに使う文字のフォントconstctxfontpxmonospaceキャンバスに使う文字のフォント中略文字を取得し、表示ctxfontctxfontctxfillStylergbactxfillTexttalkNumbertalknumberスペースキーで次へを挿入iftalknumberctxfontctxfontctxfillStylergbactxfillTextスペースキーで次へ中略キャンバスに使う文字のフォントとスペースキーで次へを挿入を入れてください。	2021-12-18 08:23:25
海外TECH	DEV Community	Cerealizing with Serializers	https://dev.to/michaelneis/cerealizing-with-serializers-1h4p	Cerealizing with SerializersIf you are reading this you might like me be relatively new to Ruby on Rails and are still getting familiar with some of the features it has to offer Personally when I first heard about serializers they seemed a bit redundant We are already handling what we are rendering in our controller so why add an extra layer While it may seem like extra work in a small application as you expand your database you will start to realize that sorting through your data in the controllers becomes increasingly difficult For now let s just take a look at a smaller application to understand the basics Let s say we ve built out the basics for a database for cereal companies and we want to show those cereals to users buying them online for now we won t worry about creating users we will just focus on the cereal side Right now we aren t using serializers we just have a controller and a model for Company CEO Charity and of course Cereal For our purposes a Company has many CEOs Charities and Cereals We just have some simple models for now class Company lt ApplicationRecord has many ceos has many charities has many cerealsendclass Ceo lt ApplicationRecord belongs to companyendclass Charity lt ApplicationRecord belongs to companyendclass Cereal lt ApplicationRecord belongs to companyendAlright now let s take a look at our routes rb Rails application routes draw do resources cereals resources companies resources charities resources ceosendUsing resources will automatically include all RESTful routes which means we can define index and show in our cereal controller class CerealsController lt ApplicationController def index cereals Cereal all render json cereals end def show cereal Cereal find params id render json cereal endendNote using a find in the show route on its own is not best practice because if an incorrect id is provided there will be no rescue from the error If you would like to know more about handling errors check out the Rails documentation for info on error handling and validations Since we are only focused on setting up serializers we ll skip this for now Ok so as it stands right now let s take a look at what returns to us on a GET request to cereals id name Cheerios company id price ingredients list of ingredients time to make transportation schedule list of schedule details expiration date Jan warehouse location Cleveland created at T Z updated at T Z id name Chex company id price ingredients list of ingredients time to make transportation schedule list of schedule details expiration date Jan warehouse location Des Moines created at T Z updated at T Z id name Lucky Charms company id price ingredients list of ingredients time to make transportation schedule list of schedule details expiration date Jan warehouse location Minneapolis created at T Z updated at T Z It works But that is a lot of data that we don t necessarily need If the request is being made by a user that is hoping to buy a box of cereal there is definitely some data that can be left out When you are buying cereal you don t need to know the id of that particular box of cereal how long it took to make the transportation schedule the warehouse it is stored in or when it was added or updated to the database What we could do is specify what parts of the hash we want rendered in our controller but we would have to repeat that process on any and every request we make as we continue to build out the application What we can do instead is use serializers To get started we have to install the serializers gem bundle add active model serializersThis will add the gem to your gemfile and install it at the same time Now we can create a serializer for cereal with rails g serializer cereal You will see that this automatically create a serializers folder in your application and add a cereal serializer to it I know what you may be thinking Generating serializers for all of my models sounds exhausting and time consuming And if you do it the way we just did you d be right But a bonus to the serializer gem is that if you install it at the beginning of your application before creating any of your migrations models or controllers running rails g cereal will also create a serializer so that you don t have to By default it will even include any relationships and attributes that you added to your generation Since we didn t do that this time around this is what our serializer looks like right now class CerealSerializer lt ActiveModel Serializer attributes idendBecause it only includes the attribute id the only thing that will be rendered it the cereal id Taking a look at our GET request again we see id id id Pretty cool but still not the information we want to show our buyers Looking at all of the data from the previous request the realistic attributes we might want to include are name company id price ingredients and expiration date So let s do that class CerealSerializer lt ActiveModel Serializer attributes name company id price ingredients expiration dateendAnd see the new return results name Cheerios company id price ingredients list of ingredients expiration date Jan name Chex company id price ingredients list of ingredients expiration date Jan name Lucky Charms company id price ingredients list of ingredients expiration date Jan Sweet Now without changing anything in our controller let s look at the results of a Get request to a specific cereal id triggering the show route name Cheerios company id price ingredients list of ingredients expiration date Jan As you can see the specified attributes of the cereal serializer are being used in both routes from the cereal controller This way we can specify what attributes we want in a scope that will affect all of our routes But what about that company id that we are getting That won t be very useful to a buyer We want to be able to see the actual company name not just the id Serializers have the ability to show associations through has many and belongs to just like in our models You may notice that if you generate a serializer using resource a model that belongs to another will have a serializer with a has one association instead of belongs to These operate the same but I find it easier and more consistent to use belongs to Let s update our cereal serializer with a belongs to and see what we get We also remove the company id attribute since we won t be needing that class CerealSerializer lt ActiveModel Serializer attributes name company id price ingredients expiration date belongs to companyendOn a show route this will return name Cheerios price ingredients list of ingredients expiration date Jan company id name General Mills employees healthcare plan plan description revenue created at T Z updated at T Z Great Now we have the company details from that association But again we re getting information that we don t need There s a few ways we could handle this now The first way we can handle it is to create serializers for our other classes and use them through our belongs to association Let s create a serializer for company with rails g serializer company and edit the attributes it shows class CompanySerializer lt ActiveModel Serializer attributes nameendHere s the result of requesting now name Cheerios price ingredients list of ingredients expiration date Jan company name General Mills Sweet We now have the company name associated with our cereal There are a few problems with this solution however For one as you can see in order to access that company name we have to read down two levels to the nested data Not too ideal Another is that this serializer will be filtering all of the company requests as well So a GET request to companies will only give us name General Mills name Kellogg s name Quaker Oats If all we are using this database for is to show the company names this is fine but we may want to be able to access different attributes of those parent models The second solution fixes those problems We can create custom serializer methods and include them in the attributes First we ll want to remove the belongs to company from our cereal serializer class CerealSerializer lt ActiveModel Serializer attributes name price ingredients expiration date company name def company name object company name endendWe can define methods within our serializers to perform data handling then all we need to do is add that method name to our attributes list object is a moniker for the object that is being passed to the serializer similar to self in class models Here s what we get on this request name Cheerios price ingredients list of ingredients expiration date Jan company name General Mills Much cleaner Using custom methods is a pretty slick way to include associated data when we only want certain attributes of that data Now as you can see the company name is on the same level as all of our other data so no need to dig into nested data To show another example of custom methods I am now going to use the CEO and Charity models that were defined earlier but never used Let s say a company wanted to include some details of a charitable cause they are backing and a motto from their fearless CEO on the box they are selling Obviously in real life these would just be mass printed on the boxes during packing but since we are working in a digital world we need to find a way to render that information Since both are children of Company I will just be using Ceo first and Charity first in reference to each instance I want to use class CerealSerializer lt ActiveModel Serializerattributes name price ingredients expiration date company name ceo name ceo motto charity name charity cause def company name object company name end def ceo name object company ceos first name end def ceo motto object company ceos first motto end def charity name object company charities first name end def charity cause object company charities first cause endendAnd here s our render name Cheerios price ingredients list of ingredients expiration date Jan company name General Mills ceo name Jeff Harmening ceo motto Cereal is our passion charity name General Mills Foundation charity cause Advancing regenerative agriculture The way in which you go about receiving data will differ based on how your database is set up and nested but hopefully this gives you an idea of how to start that process	2021-12-17 23:24:32
海外TECH	Engadget	Amazon's Appstore is finally working again on Android 12	https://www.engadget.com/amazon-fixes-android-12-appstore-231954404.html?src=rss	Amazon x s Appstore is finally working again on Android Amazon has addressed the issue that had left those with Android phones unable to use apps they had downloaded from the company s Appstore “We have released a fix for an issue impacting app launches for Amazon Appstore customers that have upgraded to Android on their mobile devices quot a spokesperson for the company told Engadget on Friday quot We are contacting customers with steps to update their Appstore experience We are sorry for any disruption this has caused Reports of applications from the Appstore not working on Android started to surface online in late October Those with devices like the Google Pixel and Samsung Galaxy S found they couldn t run any of the software they had previously downloaded from the Appstore There were also reports of no apps showing up in the marketplace While the issue didn t affect many people it took about a month for Amazon to acknowledge it officially On Friday the company didn t say what had caused the problem When it first surfaced there was speculation it stemmed from an incompatibility between Amazon s built in DRM and Android nbsp nbsp	2021-12-17 23:19:54
海外科学	NYT > Science	Is It Safe to Travel? Can I Still See My Family on Christmas?	https://www.nytimes.com/2021/12/17/well/live/omicron-holiday-travel-parties-testing.html	holiday	2021-12-17 23:40:47
金融	金融総合：経済レポート一覧	暗号資産「ミーム仮想通貨」の衝撃～あなたの知らない「柴犬」と仮想通貨が関係する世界：Watching	http://www3.keizaireport.com/report.php/RID/478693/?rss	watching	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	FX Daily(12月16日)～ドル円、113円台半ばまで下落	http://www3.keizaireport.com/report.php/RID/478694/?rss	fxdaily	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	MUFG Focus USA Topics（2021年12月15日）：12月FOMC～FOMC参加者見通しは2022年に3回の利上げを示唆	http://www3.keizaireport.com/report.php/RID/478695/?rss	mufgfocususatopics	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	当面の金融政策運営について（2021年12月17日）	http://www3.keizaireport.com/report.php/RID/478696/?rss	日本銀行	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	「新型コロナウイルス感染症対応金融支援特別オペレーション基本要領」の一部改正等について	http://www3.keizaireport.com/report.php/RID/478697/?rss	新型コロナウイルス	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	ＥＣＢも緩和縮小を開始～利上げには慎重だが、条件達成に一歩近づく：Europe Trends	http://www3.keizaireport.com/report.php/RID/478706/?rss	europetrends	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	トルコ中銀の「逆走」はまだまだ続きそうだ...～政府は財政出動と為替介入で難局を乗り切る構えだが、状況は「行くも地獄、戻るも地獄」の状況に：Asia Trends	http://www3.keizaireport.com/report.php/RID/478707/?rss	asiatrends	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	ファンドニュース（120）資産運用会社におけるシステム開発最適化の施策	http://www3.keizaireport.com/report.php/RID/478719/?rss	pwcjapan	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	改めて考える米金融政策の行方と市場への影響：市川レポート	http://www3.keizaireport.com/report.php/RID/478722/?rss	三井住友	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	安いニッポンと日銀：Market Flash	http://www3.keizaireport.com/report.php/RID/478726/?rss	marketflash	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	インドジャーナル：海外からの注目が集まるインド市場	http://www3.keizaireport.com/report.php/RID/478728/?rss	野村アセットマネジメント	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	アジアREIT四半期レポート（2021年9月～2021年11月）：マーケットレポート	http://www3.keizaireport.com/report.php/RID/478729/?rss	三井住友トラスト	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	BOEが利上げ、ECBは量的金融緩和を縮小へ～米国に続き、欧州の中央銀行が金融政策の正常化に舵切り：マーケットレポート	http://www3.keizaireport.com/report.php/RID/478730/?rss	三井住友トラスト	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	12月ECB理事会 金融政策を現状維持～2022年のインフレ率見通しを上方修正	http://www3.keizaireport.com/report.php/RID/478732/?rss	上方修正	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	日銀がコロナオペを延長、正常化に動く海外中銀との政策姿勢の違いが明確に：木内登英のGlobal Economy ＆ Policy Insight	http://www3.keizaireport.com/report.php/RID/478733/?rss	lobaleconomypolicyinsight	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	ECBのラガルド総裁の記者会見～step down approach：井上哲也のReview on Central Banking	http://www3.keizaireport.com/report.php/RID/478735/?rss	reviewoncentralbanking	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	BOE、ECBが手探りの金融政策正常化に踏み出す：木内登英のGlobal Economy ＆ Policy Insight	http://www3.keizaireport.com/report.php/RID/478736/?rss	lobaleconomypolicyinsight	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	楽読 Vol.1777～インフレが定着するリスクへの対応姿勢を鮮明にした米FRB	http://www3.keizaireport.com/report.php/RID/478744/?rss	日興アセットマネジメント	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	メキシコ金融政策（2021年12月）～利上げペースを加速し、インフレ抑制にコミット：マーケットレター	http://www3.keizaireport.com/report.php/RID/478745/?rss	投資信託	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	Weekly金融市場 2021年12月17日号（全体版）～来週の注目材料、経済指標。	http://www3.keizaireport.com/report.php/RID/478747/?rss	weekly	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	【注目検索キーワード】グリーンボンド	http://search.keizaireport.com/search.php/-/keyword=グリーンボンド/?rss	検索キーワード	2021-12-18 00:00:00
金融	金融総合：経済レポート一覧	【お薦め書籍】なぜウチの会社は変われないんだ! と悩んだら読む 大企業ハック大全	https://www.amazon.co.jp/exec/obidos/ASIN/4478114196/keizaireport-22/	選抜	2021-12-18 00:00:00
ニュース	BBC News - Home	Ghislaine Maxwell defence rests as she calls case 'unproven'	https://www.bbc.co.uk/news/world-us-canada-59703611?at_medium=RSS&at_campaign=KARANGA	unproven	2021-12-17 23:12:31
ニュース	BBC News - Home	Scottish Power probe into claims of 'aggressive' energy debt tactics	https://www.bbc.co.uk/news/uk-scotland-59707817?at_medium=RSS&at_campaign=KARANGA	bills	2021-12-17 23:05:29
LifeHuck	ライフハッカー［日本版］	トラブルを未然に防ぐためにするべき、たった1つの工夫	https://www.lifehacker.jp/2021/12/the-power-of-solving-small-problems.html	未然	2021-12-18 08:30:00
北海道	北海道新聞	道内各地で大雪　札幌中央区５５センチ　小樽４９センチ	https://www.hokkaido-np.co.jp/article/624579/	冬型の気圧配置	2021-12-18 08:11:49
北海道	北海道新聞	家族会前代表の飯塚繁雄さん死去　田口八重子さん兄、８３歳	https://www.hokkaido-np.co.jp/article/624578/	拉致被害者	2021-12-18 08:05:00
マーケティング	AdverTimes	好調、売り切れ相次ぐ　鳥取市の地域振興チケット	https://www.advertimes.com/20211218/article371749/	publishedby	2021-12-18 00:00:32
マーケティング	AdverTimes	元旦休業 さらに拡大　スーパーマーケットなど	https://www.advertimes.com/20211218/article371745/	拡大	2021-12-17 23:00:50