Connexion Google avec React et Parse pour Développeurs

connexion google avec react introduction dans le dernier tutoriel, vous avez construit une fonctionnalité de connexion/déconnexion d'utilisateur pour votre application en utilisant la parse user parse user classe maintenant, vous allez apprendre à utiliser la connexion google pour récupérer les données utilisateur de google et vous connecter, vous inscrire ou lier des utilisateurs existants avec cela vous allez également installer et configurer la react google login react google login bibliothèque pour y parvenir la parse user linkwith parse user linkwith méthode est responsable de l'inscription et de la connexion des utilisateurs en utilisant n'importe quelle méthode d'authentification tierce, tant que vous passez les bons paramètres demandés par chaque fournisseur différent après avoir lié les données utilisateur à un nouvel utilisateur ou à un utilisateur existant, parse user parse user , parse stockera une session utilisateur valide sur votre appareil les appels futurs à des méthodes comme current current récupéreront avec succès vos données utilisateur, tout comme avec des connexions régulières prérequis pour compléter ce tutoriel, vous aurez besoin de une application react créée et connectée à back4app complétez le guide précédent afin d'avoir une meilleure compréhension de la classe parse user et la méthode parse user login https //www back4app com/docs/react/working with users/react user login si vous souhaitez tester/utiliser la mise en page de l'écran fournie par ce guide, vous devez configurer la ant design ant design bibliothèque objectif construire une fonctionnalité de connexion utilisateur en utilisant la connexion google sur parse pour une application react 1 installation des dépendances la manière la plus populaire d'activer la connexion google sur react est d'utiliser react google login react google login pour le gérer configurez le en suivant les documents officiels assurez vous de créer un oauth clientid clientid dans votre page de crédits google, en ajoutant votre adresse de développement local aux url autorisées, qui est généralement http //localhost 3000 http //localhost 3000 2 utilisation de la connexion google avec parse créons maintenant une nouvelle méthode à l'intérieur du userlogin userlogin composant qui gérera la réponse lors de l'appel d'une modal d'authentification google sign in si l'utilisateur se connecte avec google, cet appel récupérera les données de l'utilisateur depuis google et vous devez stocker l'id, idtoken idtoken , et l'email google ensuite, la fonction essaiera de se connecter sur parse en utilisant le parse user linkwith parse user linkwith méthode et ces identifiants notez que si votre utilisateur s'est déjà inscrit en utilisant cette authentification google, linkwith linkwith le connectera en utilisant le compte existant 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 } après cela, vous devez utiliser le react google login react google login googlelogin googlelogin composant pour appeler la modal de connexion google, en l'ajoutant à votre code jsx vous pouvez utiliser le style par défaut de google ou créer un style personnalisé, ce qui est la méthode suivie par ce guide voici le code complet du userlogin userlogin composant, notez le react google login react google login bouton et comment il est lié à la méthode de réponse de la modal créée précédemment 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\ 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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\ 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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 }; ajoutez ces classes à votre app css app css fichier si vous souhaitez rendre complètement la mise en page de ce composant 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 } allez y et testez votre nouvelle fonction si vous avez pu vous connecter à google et que l'appel linkwith linkwith a réussi, vous devriez voir un message de succès comme celui ci 3 vérification de la connexion de l'utilisateur et création de session pour vous assurer que la connexion google a fonctionné, vous pouvez consulter votre tableau de bord parse et voir votre nouvel utilisateur utilisateur (si vos données d'authentification google n'appartenaient pas à un autre utilisateur), contenant les authdata authdata paramètres vous pouvez également vérifier qu'une session valide a été créée dans le tableau de bord, contenant un pointeur vers cet utilisateur utilisateur objet 4 lier un utilisateur existant à google sign in un autre linkwith linkwith usage possible est de lier un utilisateur existant avec un autre fournisseur d'authentification, dans ce cas, google ajoutez cette fonction qui appelle linkwith linkwith de la même manière que la connexion à votre userlogin userlogin composant la seule différence ici est qu'au lieu d'appeler la méthode depuis un parse user parse user , vous l'utiliserez depuis l'objet utilisateur actuellement connecté 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 } assignez cette fonction à un autre react google login react google login composant de votre écran d'accueil, qui n'est affiché que lorsqu'il y a un utilisateur actuel connecté dans votre application testez votre nouvelle fonction, en notant que la parse user parse user valeur de l'objet authdata authdata sera mise à jour avec les nouvelles données du fournisseur d'authentification vérifiez si l'utilisateur a effectivement été mis à jour dans le tableau de bord de votre serveur parse conclusion à la fin de ce guide, vous avez appris comment vous connecter, vous inscrire ou lier des utilisateurs parse existants sur react en utilisant google sign in avec react google login react google login dans le prochain guide, nous vous montrerons comment utiliser l'authentification apple