ReactでGoogleサインインを用いたユーザーログイン実装ガイド

react google login はじめに 前回のチュートリアルでは、アプリにユーザーログイン/ログアウト機能を追加しました。 parse user parse user クラスを使用しました。今回は、googleサインインを使用してgoogleからユーザーデータを取得し、ログイン、サインアップ、または既存のユーザーとリンクする方法を学びます。また、これを実現するために react google login react google login ライブラリをインストールして設定します。 「 parse user linkwith parse user linkwith 」メソッドは、各プロバイダーが要求する正しいパラメータを渡す限り、任意のサードパーティ認証メソッドを使用してユーザーをサインアップおよびログインさせる役割を担っています。新しいまたは既存の parse user parse user にユーザーデータをリンクした後、parseはデバイス上に有効なユーザーセッションを保存します。今後、「 current current 」のようなメソッドを呼び出すと、通常のログインと同様にユーザーデータを正常に取得できます。 前提条件 このチュートリアルを完了するには、次のものが必要です reactアプリを作成し、 back4appに接続 前のガイドを完了して、 parse userクラスとparse user loginメソッドについての理解を深めてください。 https //www back4app com/docs/react/working with users/react user login このガイドで提供されている画面レイアウトをテスト/使用したい場合は、 ant design ant design ライブラリを設定する必要があります。 目標 reactアプリのparseでgoogleサインインを使用してユーザーログイン機能を構築すること。 1 依存関係のインストール reactでgoogleサインインを有効にする最も一般的な方法は、 react google login react google login を使用して処理することです。 公式ドキュメント に従って設定してください。 googleの資格情報ページでoauth clientid clientid を作成し、ローカル開発アドレスを承認されたurlに追加することを確認してください。一般的には、 http //localhost 3000 http //localhost 3000 です。 2 parseでgoogleサインインを使用する では、googleサインイン認証モーダルを呼び出したときの応答を処理する新しいメソッドを userlogin userlogin コンポーネント内に作成しましょう。ユーザーがgoogleでサインインすると、この呼び出しはgoogleからユーザーデータを取得し、id、 idtoken idtoken , およびgoogleメールを保存する必要があります。その後、関数はこれらの資格情報を使用して parse user linkwith parse user linkwith メソッドでparseにログインしようとします。ユーザーがこのgoogle認証を使用してすでにサインアップしている場合、 linkwith linkwith は既存のアカウントを使用してログインします。 javascript 1 const handlegoogleloginloginresponse = async function(response) { 2 // check if response has an error 3 if (response error !== undefined) { 4 console log(`error ${response error}`); 5 return false; 6 } else { 7 try { 8 // gather google user info 9 const usergoogleid = response googleid; 10 const usertokenid = response tokenid; 11 const useremail = response profileobj email; 12 // try to login on parse using linkwith and these credentials 13 // create a new parse user object 14 const usertologin = new parse user(); 15 // set username and email to match google email 16 usertologin set('username', useremail); 17 usertologin set('email', useremail); 18 try { 19 let loggedinuser = await usertologin 20 linkwith('google', { 21 authdata {id usergoogleid, id token usertokenid}, 22 }); 23 // login returns the corresponding parseuser object 24 alert( 25 `success! user ${loggedinuser get('username')} has successfully signed in!`, 26 ); 27 // update state variable holding current user 28 getcurrentuser(); 29 return true; 30 } catch (error) { 31 // error can be caused by wrong parameters or lack of internet connection 32 alert(`error! ${error message}`); 33 return false; 34 } 35 } catch (error) { 36 console log("error gathering google user info, please try again!") 37 return false; 38 } 39 } 40 }1 const handlegoogleloginloginresponse = async function(response any) promise\<boolean> { 2 // check if response has an error 3 if (response error !== undefined) { 4 console log(`error ${response error}`); 5 return false; 6 } else { 7 try { 8 // gather google user info 9 const usergoogleid string = response googleid; 10 const usertokenid string = response tokenid; 11 const useremail string = response profileobj email; 12 // try to login on parse using linkwith and these credentials 13 // create a new parse user object 14 const usertologin parse user = new parse user(); 15 // set username and email to match google email 16 usertologin set('username', useremail); 17 usertologin set('email', useremail); 18 try { 19 let loggedinuser parse user = await usertologin 20 linkwith('google', { 21 authdata {id usergoogleid, id token usertokenid}, 22 }); 23 // login returns the corresponding parseuser object 24 alert( 25 `success! user ${loggedinuser get('username')} has successfully signed in!`, 26 ); 27 // update state variable holding current user 28 getcurrentuser(); 29 return true; 30 } catch (error any) { 31 // error can be caused by wrong parameters or lack of internet connection 32 alert(`error! ${error message}`); 33 return false; 34 } 35 } catch (error any) { 36 console log("error gathering google user info, please try again!") 37 return false; 38 } 39 } 40 } その後、次のものを使用する必要があります。 react google login react google login googlelogin googlelogin コンポーネントを使用してgoogleサインインモーダルを呼び出し、それをjsxコードに追加します。googleのデフォルトスタイルを使用することも、カスタムスタイルを作成することもできますが、これはこのガイドで採用されている方法です。以下は完全な userlogin userlogin コンポーネントコードで、 react google login react google login ボタンと、それが以前に作成されたモーダル応答メソッドにどのように結びついているかに注意してください。 javascript 1 import react, { usestate } from 'react'; 2 import parse from 'parse/dist/parse min js'; 3 import googlelogin from 'react google login'; 4 import ' /app css'; 5 import { button, divider, input } from 'antd'; 6&#x9; 7 export const userlogin = () => { 8 // state variables 9 const \[username, setusername] = usestate(''); 10 const \[password, setpassword] = usestate(''); 11 const \[currentuser, setcurrentuser] = usestate(null); 12&#x9; 13 const douserlogin = async function () { 14 // note that these values come from state variables that we've declared before 15 const usernamevalue = username; 16 const passwordvalue = password; 17 try { 18 const loggedinuser = await parse user login(usernamevalue, passwordvalue); 19 // login returns the corresponding parseuser object 20 alert( 21 `success! user ${loggedinuser get( 22 'username' 23 )} has successfully signed in!` 24 ); 25 // to verify that this is in fact the current user, `current` can be used 26 const currentuser = await parse user current(); 27 console log(loggedinuser === currentuser); 28 // clear input fields 29 setusername(''); 30 setpassword(''); 31 // update state variable holding current user 32 getcurrentuser(); 33 return true; 34 } catch (error) { 35 // error can be caused by wrong parameters or lack of internet connection 36 alert(`error! ${error message}`); 37 return false; 38 } 39 }; 40&#x9; 41 const douserlogout = async function () { 42 try { 43 await parse user logout(); 44 // to verify that current user is now empty, currentasync can be used 45 const currentuser = await parse user current(); 46 if (currentuser === null) { 47 alert('success! no user is logged in anymore!'); 48 } 49 // update state variable holding current user 50 getcurrentuser(); 51 return true; 52 } catch (error) { 53 alert(`error! ${error message}`); 54 return false; 55 } 56 }; 57&#x9; 58 // function that will return current user and also update current username 59 const getcurrentuser = async function () { 60 const currentuser = await parse user current(); 61 // update state variable holding current user 62 setcurrentuser(currentuser); 63 return currentuser; 64 }; 65&#x9; 66 const handlegoogleloginloginresponse = async function (response) { 67 // check if response has an error 68 if (response error !== undefined) { 69 console log(`error ${response error}`); 70 return false; 71 } else { 72 try { 73 // gather google user info 74 const usergoogleid = response googleid; 75 const usertokenid = response tokenid; 76 const useremail = response profileobj email; 77 // try to login on parse using linkwith and these credentials 78 // create a new parse user object 79 const usertologin = new parse user(); 80 // set username and email to match google email 81 usertologin set('username', useremail); 82 usertologin set('email', useremail); 83 try { 84 let loggedinuser = await usertologin linkwith('google', { 85 authdata { id usergoogleid, id token usertokenid }, 86 }); 87 // login returns the corresponding parseuser object 88 alert( 89 `success! user ${loggedinuser get( 90 'username' 91 )} has successfully signed in!` 92 ); 93 // update state variable holding current user 94 getcurrentuser(); 95 return true; 96 } catch (error) { 97 // error can be caused by wrong parameters or lack of internet connection 98 alert(`error! ${error message}`); 99 return false; 100 } 101 } catch (error) { 102 console log('error gathering google user info, please try again!'); 103 return false; 104 } 105 } 106 }; 107&#x9; 108 return ( 109 \<div> 110 \<div classname="header"> 111 \<img 112 classname="header logo" 113 alt="back4app logo" 114 src={ 115 'https //blog back4app com/wp content/uploads/2019/05/back4app white logo 500px png' 116 } 117 /> 118 \<p classname="header text bold">{'react on back4app'}\</p> 119 \<p classname="header text">{'user login'}\</p> 120 \</div> 121 {currentuser === null && ( 122 \<div classname="container"> 123 \<h2 classname="heading">{'user login'}\</h2> 124 \<divider /> 125 \<div classname="form wrapper"> 126 \<input 127 value={username} 128 onchange={(event) => setusername(event target value)} 129 placeholder="username" 130 size="large" 131 classname="form input" 132 /> 133 \<input 134 value={password} 135 onchange={(event) => setpassword(event target value)} 136 placeholder="password" 137 size="large" 138 type="password" 139 classname="form input" 140 /> 141 \</div> 142 \<div classname="form buttons"> 143 \<button 144 onclick={() => douserlogin()} 145 type="primary" 146 classname="form button" 147 color={'#208aec'} 148 size="large" 149 block 150 > 151 log in 152 \</button> 153 \</div> 154 \<divider /> 155 \<div classname="login social"> 156 \<div classname="login social item login social item facebook"> 157 \<img classname="login social item image" src={'https //findicons com/files/icons/2830/clean social icons/250/facebook png'} alt=""/> 158 \</div> 159 \<googlelogin 160 clientid="108490793456 0flm4qh8ek4cb4krt7e06980o4sjvado apps googleusercontent com" 161 render={renderprops => ( 162 \<div classname="login social item"> 163 \<img onclick={renderprops onclick} classname="login social item image" src={'data\ 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alt=""/> 164 \</div> 165 )} 166 buttontext="login" 167 onsuccess={handlegoogleloginloginresponse} 168 onfailure={handlegoogleloginloginresponse} 169 cookiepolicy={'single host origin'} 170 /> 171 \<div classname="login social item"> 172 \<img classname="login social item image" src={'data\ 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alt=""/> 173 \</div> 174 \</div> 175 \<p classname="form hint">don't have an account? \<a classname="form link" href="#">sign up\</a>\</p> 176 \</div> 177 )} 178 {currentuser !== null && ( 179 \<div classname="container"> 180 \<h2 classname="heading">{'user screen'}\</h2> 181 \<divider /> 182 \<h2 classname="heading">{`hello ${currentuser get('username')}!`}\</h2> 183 \<div classname="form buttons"> 184 \<button 185 onclick={() => douserlogout()} 186 type="primary" 187 classname="form button" 188 color={'#208aec'} 189 size="large" 190 block 191 > 192 log out 193 \</button> 194 \</div> 195 \</div> 196 )} 197 \</div> 198 ); 199 };1 import react, { usestate, fc, reactelement } from 'react'; 2 import ' /app css'; 3 import { button, divider, input } from 'antd'; 4 import googlelogin from 'react google login'; 5 const parse = require('parse/dist/parse min js'); 6&#x9; 7 export const userlogin fc<{}> = () reactelement => { 8 // state variables 9 const \[username, setusername] = usestate(''); 10 const \[password, setpassword] = usestate(''); 11 const \[currentuser, setcurrentuser] = usestate\<parse object | null>(null); 12&#x9; 13 const douserlogin = async function () promise\<boolean> { 14 // note that these values come from state variables that we've declared before 15 const usernamevalue string = username; 16 const passwordvalue string = password; 17 try { 18 const loggedinuser parse user = await parse user login(usernamevalue, passwordvalue); 19 // login returns the corresponding parseuser object 20 alert( 21 `success! user ${loggedinuser get('username')} has successfully signed in!`, 22 ); 23 // to verify that this is in fact the current user, `current` can be used 24 const currentuser parse user = await parse user current(); 25 console log(loggedinuser === currentuser); 26 // clear input fields 27 setusername(''); 28 setpassword(''); 29 // update state variable holding current user 30 getcurrentuser(); 31 return true; 32 } catch (error any) { 33 // error can be caused by wrong parameters or lack of internet connection 34 alert(`error! ${error message}`); 35 return false; 36 } 37 }; 38&#x9; 39 const douserlogout = async function () promise\<boolean> { 40 try { 41 await parse user logout(); 42 // to verify that current user is now empty, currentasync can be used 43 const currentuser parse user = await parse user current(); 44 if (currentuser === null) { 45 alert('success! no user is logged in anymore!'); 46 } 47 // update state variable holding current user 48 getcurrentuser(); 49 return true; 50 } catch (error any) { 51 alert(`error! ${error message}`); 52 return false; 53 } 54 }; 55&#x9; 56 // function that will return current user and also update current username 57 const getcurrentuser = async function () promise\<parse user | null> { 58 const currentuser (parse user | null) = await parse user current(); 59 // update state variable holding current user 60 setcurrentuser(currentuser); 61 return currentuser; 62 } 63&#x9; 64 const handlegoogleloginloginresponse = async function(response any) promise\<boolean> { 65 // check if response has an error 66 if (response error !== undefined) { 67 console log(`error ${response error}`); 68 return false; 69 } else { 70 try { 71 // gather google user info 72 const usergoogleid string = response googleid; 73 const usertokenid string = response tokenid; 74 const useremail string = response profileobj email; 75 // try to login on parse using linkwith and these credentials 76 // create a new parse user object 77 const usertologin parse user = new parse user(); 78 // set username and email to match google email 79 usertologin set('username', useremail); 80 usertologin set('email', useremail); 81 try { 82 let loggedinuser parse user = await usertologin 83 linkwith('google', { 84 authdata {id usergoogleid, id token usertokenid}, 85 }); 86 // login returns the corresponding parseuser object 87 alert( 88 `success! user ${loggedinuser get('username')} has successfully signed in!`, 89 ); 90 // update state variable holding current user 91 getcurrentuser(); 92 return true; 93 } catch (error any) { 94 // error can be caused by wrong parameters or lack of internet connection 95 alert(`error! ${error message}`); 96 return false; 97 } 98 } catch (error any) { 99 console log("error gathering google user info, please try again!") 100 return false; 101 } 102 } 103 } 104&#x9; 105 return ( 106 \<div> 107 \<div classname="header"> 108 \<img 109 classname="header logo" 110 alt="back4app logo" 111 src={ 112 'https //blog back4app com/wp content/uploads/2019/05/back4app white logo 500px png' 113 } 114 /> 115 \<p classname="header text bold">{'react on back4app'}\</p> 116 \<p classname="header text">{'user login'}\</p> 117 \</div> 118 {currentuser === null && ( 119 \<div classname="container"> 120 \<h2 classname="heading">{'user login'}\</h2> 121 \<divider /> 122 \<div classname="form wrapper"> 123 \<input 124 value={username} 125 onchange={(event) => setusername(event target value)} 126 placeholder="username" 127 size="large" 128 classname="form input" 129 /> 130 \<input 131 value={password} 132 onchange={(event) => setpassword(event target value)} 133 placeholder="password" 134 size="large" 135 type="password" 136 classname="form input" 137 /> 138 \</div> 139 \<div classname="form buttons"> 140 \<button 141 onclick={() => douserlogin()} 142 type="primary" 143 classname="form button" 144 color={'#208aec'} 145 size="large" 146 block 147 > 148 log in 149 \</button> 150 \</div> 151 \<divider /> 152 \<div classname="login social"> 153 \<div classname="login social item login social item facebook"> 154 \<img classname="login social item image" src={'https //findicons com/files/icons/2830/clean social icons/250/facebook png'} alt=""/> 155 \</div> 156 \<googlelogin 157 clientid="108490793456 0flm4qh8ek4cb4krt7e06980o4sjvado apps googleusercontent com" 158 render={renderprops => ( 159 \<div classname="login social item"> 160 \<img onclick={renderprops onclick} classname="login social item image" src={'data\ image/png;base64,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'} alt=""/> 161 \</div> 162 )} 163 buttontext="login" 164 onsuccess={handlegoogleloginloginresponse} 165 onfailure={handlegoogleloginloginresponse} 166 cookiepolicy={'single host origin'} 167 /> 168 \<div classname="login social item"> 169 \<img classname="login social item image" src={'data\ image/png;base64,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'} alt=""/> 170 \</div> 171 \</div> 172 \<p classname="form hint">don't have an account? \<a classname="form link" href="#">sign up\</a>\</p> 173 \</div> 174 )} 175 {currentuser !== null && ( 176 \<div classname="container"> 177 \<h2 classname="heading">{'user screen'}\</h2> 178 \<divider /> 179 \<h2 classname="heading">{`hello ${currentuser get('username')}!`}\</h2> 180 \<div classname="form buttons"> 181 \<button 182 onclick={() => douserlogout()} 183 type="primary" 184 classname="form button" 185 color={'#208aec'} 186 size="large" 187 block 188 > 189 log out 190 \</button> 191 \</div> 192 \</div> 193 )} 194 \</div> 195 ); 196 }; このクラスをあなたの app css app css ファイルに追加してください。このコンポーネントのレイアウトを完全にレンダリングしたい場合は。 app css 1 @import ' antd/dist/antd css'; 2&#x9; 3 app { 4 text align center; 5 } 6&#x9; 7 html { 8 box sizing border box; 9 outline none; 10 overflow auto; 11 } 12&#x9; 13 , 14 before, 15 after { 16 margin 0; 17 padding 0; 18 box sizing inherit; 19 } 20&#x9; 21 h1, 22 h2, 23 h3, 24 h4, 25 h5, 26 h6 { 27 margin 0; 28 font weight bold; 29 } 30&#x9; 31 p { 32 margin 0; 33 } 34&#x9; 35 body { 36 margin 0; 37 background color #fff; 38 } 39&#x9; 40 container { 41 width 100%; 42 max width 900px; 43 margin auto; 44 padding 20px 0; 45 text align left; 46 } 47&#x9; 48 header { 49 align items center; 50 padding 25px 0; 51 background color #208aec; 52 } 53&#x9; 54 header logo { 55 height 55px; 56 margin bottom 20px; 57 object fit contain; 58 } 59&#x9; 60 header text bold { 61 margin bottom 3px; 62 color rgba(255, 255, 255, 0 9); 63 font size 16px; 64 font weight bold; 65 } 66&#x9; 67 header text { 68 color rgba(255, 255, 255, 0 9); 69 font size 15px; 70 } 71&#x9; 72 heading { 73 font size 22px; 74 } 75&#x9; 76 flex { 77 display flex; 78 } 79&#x9; 80 flex between { 81 display flex; 82 justify content space between; 83 } 84&#x9; 85 flex child { 86 flex 0 0 45%; 87 } 88&#x9; 89 heading button { 90 margin left 12px; 91 } 92&#x9; 93 list item { 94 padding bottom 15px; 95 margin bottom 15px; 96 border bottom 1px solid rgba(0, 0, 0, 0 06); 97 text align left; 98 } 99&#x9; 100 list item title { 101 color rgba(0, 0, 0, 0 87); 102 font size 17px; 103 } 104&#x9; 105 list item description { 106 color rgba(0, 0, 0, 0 5); 107 font size 15px; 108 } 109&#x9; 110 form input { 111 margin bottom 20px; 112 } 113&#x9; 114 login social { 115 display flex; 116 justify content center; 117 margin bottom 30px; 118 } 119&#x9; 120 login social item { 121 width 54px; 122 height 54px; 123 border radius 54px; 124 padding 12px; 125 margin 0 12px; 126 border 1px solid #e6e6e6; 127 box shadow 0 2px 4px #d6d6d6; 128 } 129&#x9; 130 login social item facebook { 131 padding 4px; 132 background color #3c5b9b; 133 } 134&#x9; 135 login social item image { 136 width 100%; 137 } 138&#x9; 139 form hint { 140 color rgba(0, 0, 0, 0 5); 141 font size 16px; 142 text align center; 143 } 新しい機能をテストしてください。googleにサインインできて、parse linkwith linkwith の呼び出しが成功した場合、次のような成功メッセージが表示されるはずです。 3 ユーザーサインインとセッション作成の確認 googleサインインが機能したことを確認するには、parseダッシュボードを見て、新しい ユーザー ユーザー （google認証データが他のユーザーに属していない場合）を確認し、googleの authdata authdata パラメータを含んでいることを確認できます。 ダッシュボードで有効なセッションが作成されたことを確認することもでき、その中にその ユーザー ユーザー オブジェクトへのポインタが含まれています。 4 既存のユーザーをgoogleサインインにリンクする 別の linkwith linkwith の可能な使用法は、既存のユーザーを別の認証プロバイダー、今回はgoogleとリンクすることです。この関数を追加して、 linkwith linkwith を呼び出します。これは、あなたの userlogin userlogin コンポーネントにログインするのと同じ方法です。ここでの唯一の違いは、空の parse user parse user からメソッドを呼び出すのではなく、現在ログインしているユーザーオブジェクトから使用することです。 javascript 1 const handlegoogleloginlinkresponse = async function(response) { 2 // check if response has an error 3 if (response error !== undefined) { 4 console log(`error ${response error}`); 5 return false; 6 } else { 7 try { 8 // gather google user info 9 const usergoogleid = response googleid; 10 const usertokenid = response tokenid; 11 // try to link current parse user using linkwith and these credentials 12 // get current user 13 const usertolink = await parse user current(); 14 try { 15 let loggedinuser = await usertolink 16 linkwith('google', { 17 authdata {id usergoogleid, id token usertokenid}, 18 }); 19 // login returns the corresponding parseuser object 20 alert( 21 `success! user ${loggedinuser get( 22 'username', 23 )} has successfully linked his google account!`, 24 ); 25 // update state variable holding current user 26 getcurrentuser(); 27 return true; 28 } catch (error) { 29 // error can be caused by wrong parameters or lack of internet connection 30 alert(`error! ${error message}`); 31 return false; 32 } 33 } catch (error) { 34 console log("error gathering google user info, please try again!") 35 return false; 36 } 37 } 38 }1 const handlegoogleloginlinkresponse = async function(response any) promise\<boolean> { 2 // check if response has an error 3 if (response error !== undefined) { 4 console log(`error ${response error}`); 5 return false; 6 } else { 7 try { 8 // gather google user info 9 const usergoogleid string = response googleid; 10 const usertokenid string = response tokenid; 11 // try to link current parse user using linkwith and these credentials 12 // get current user 13 const usertolink parse user = await parse user current(); 14 try { 15 let loggedinuser parse user = await usertolink 16 linkwith('google', { 17 authdata {id usergoogleid, id token usertokenid}, 18 }); 19 // login returns the corresponding parseuser object 20 alert( 21 `success! user ${loggedinuser get( 22 'username', 23 )} has successfully linked his google account!`, 24 ); 25 // update state variable holding current user 26 getcurrentuser(); 27 return true; 28 } catch (error any) { 29 // error can be caused by wrong parameters or lack of internet connection 30 alert(`error! ${error message}`); 31 return false; 32 } 33 } catch (error any) { 34 console log("error gathering google user info, please try again!") 35 return false; 36 } 37 } 38 } この機能を、アプリに現在ログインしているユーザーがいるときのみ表示されるホーム画面の別の react google login react google login コンポーネントに割り当てます。新しい機能をテストし、 parse user parse user オブジェクトの authdata authdata 値が新しい認証プロバイダーのデータで更新されることに注意してください。ユーザーが実際にあなたのparseサーバーダッシュボードで更新されたかどうかを確認してください。 結論 このガイドの最後に、googleサインインを使用して、reactでparseユーザーにログイン、サインアップ、または既存のユーザーをリンクする方法を学びました。次のガイドでは、appleサインインの使用方法を示します。