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Chapter 12 - Gists
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| d88P Y88b 888 888 d8888 d88P Y88b d88P Y88b Y8P 888 | |
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| 888 888 888 888 .d888888 888 888 888 88888888 888 888 d88P" 888888 888 888 888 "Y8888b. 888 "Y8888b. | |
| Y88b d88P 888 888 888 888 888 d88P Y88b. Y8b. 888 888 888" Y88b d88P 888 X88 Y88b. X88 | |
| "Y8888P" 888 888 "Y888888 88888P" "Y888 "Y8888 888 8888888 888888888 "Y8888P88 888 88888P' "Y888 88888P' | |
| 888 | |
| 888 | |
| 888 |
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| createTutorial: function(req, res) { | |
| /* | |
| __ __ _ _ _ _ _ | |
| \ \ / /_ _| (_)__| |__ _| |_(_)___ _ _ | |
| \ V / _` | | / _` / _` | _| / _ \ ' \ | |
| \_/\__,_|_|_\__,_\__,_|\__|_\___/_||_| | |
| */ | |
| if (!_.isString(req.param('title'))) { | |
| return res.badRequest(); | |
| } | |
| if (!_.isString(req.param('description'))) { | |
| return res.badRequest(); | |
| } | |
| // Find the user that's adding a tutorial | |
| User.findOne({ | |
| id: req.session.userId | |
| }).exec(function(err, foundUser){ | |
| if (err) return res.negotiate; | |
| if (!foundUser) return res.notFound(); | |
| // Create the new tutorial in the tutorial model | |
| Tutorial.create({ | |
| title: req.param('title'), | |
| description: req.param('description'), | |
| owner: { username: foundUser.username }, | |
| }).exec(function(err, createdTutorial){ | |
| if (err) return res.negotate(err); | |
| // Update the user to contain the new tutorial | |
| foundUser.tutorials = []; | |
| foundUser.tutorials.push({ | |
| title: req.param('title'), | |
| description: req.param('description'), | |
| created: foundUser.createdAt, | |
| updated: foundUser.updatedAt, | |
| id: foundUser.id | |
| }); | |
| User.update({ | |
| id: req.session.userId | |
| }, { | |
| tutorials: foundUser.tutorials | |
| }) | |
| .exec(function(err){ | |
| if (err) return res.negotiate(err); | |
| // return the new tutorial id | |
| return res.json({id: createdTutorial.id}); | |
| }); | |
| }); | |
| }); | |
| }, |
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| editTutorial: function(req, res) { | |
| Tutorial.findOne({ | |
| id: +req.param('id') | |
| }).exec(function (err, foundTutorial){ | |
| if (err) return res.negotiate(err); | |
| if (!foundTutorial) return res.notFound(); | |
| User.findOne({ | |
| id: +req.session.userId | |
| }).exec(function (err, foundUser) { | |
| if (err) { | |
| return res.negotiate(err); | |
| } | |
| if (!foundUser) { | |
| sails.log.verbose('Session refers to a user who no longer exists- did you delete a user, then try to refresh the page with an open tab logged-in as that user?'); | |
| return res.redirect('/tutorials'); | |
| } | |
| if (foundUser.username !== foundTutorial.owner.username) { | |
| return res.redirect('/tutorials/'+foundTutorial.id); | |
| } | |
| return res.view('tutorials-detail-edit', { | |
| me: { | |
| gravatarURL: foundUser.gravatarURL, | |
| username: foundUser.username, | |
| admin: foundUser.admin | |
| }, | |
| tutorial: { | |
| id: foundTutorial.id, | |
| title: foundTutorial.title, | |
| description: foundTutorial.description, | |
| } | |
| }); | |
| }); | |
| }); | |
| }, |
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| updateTutorial: function(req, res) { | |
| // Validate parameters | |
| if (!_.isString(req.param('title'))) { | |
| return res.badRequest(); | |
| } | |
| if (!_.isString(req.param('description'))) { | |
| return res.badRequest(); | |
| } | |
| User.findOne({ | |
| id: req.session.userId | |
| }).exec(function (err, foundUser){ | |
| if (err) return res.negotiate(err); | |
| if (!foundUser) return res.notFound(); | |
| Tutorial.findOne({ | |
| id: +req.param('id') | |
| }) | |
| .exec(function(err, foundTutorial){ | |
| if (err) return res.negotiate(err); | |
| if (!foundTutorial) return res.notFound(); | |
| if (foundUser.username != foundTutorial.owner.username) { | |
| return res.forbidden(); | |
| } | |
| // // We could also do it this way | |
| // // Update the tutorial coercing the incoming id from a string to an integer using the unary `+` | |
| // Tutorial.update({ | |
| // id: +req.param('id') | |
| // }, { | |
| // title: req.param('title'), | |
| // description: req.param('description') | |
| // }).exec(function (err) { | |
| // if (err) return res.negotiate(err); | |
| // async.each(foundUser, function (user, next){ | |
| // var cachedTutorial = _.find(foundUser.tutorials, { id: +req.param('id') }); | |
| // if (!cachedTutorial) { | |
| // return next(); | |
| // } | |
| // cachedTutorial.title = req.param('title'); | |
| // cachedTutorial.description = req.param('description'); | |
| // // update that array with the new values. | |
| // User.update({ | |
| // id: foundUser.id | |
| // }, { | |
| // tutorials: foundUser.tutorials | |
| // }) | |
| // .exec(function (err) { | |
| // if (err) { return next(err); } | |
| // return next(); | |
| // }); | |
| // }, function (err) { | |
| // if (err) {return res.negotiate(err);} | |
| // return res.ok(); | |
| // }); | |
| // }); | |
| // Update the tutorial coercing the incoming id from a string to an integer using the unary `+` | |
| Tutorial.update({ | |
| id: +req.param('id') | |
| }).set({ | |
| title: req.param('title'), | |
| description: req.param('description') | |
| }).exec(function (err) { | |
| if (err) return res.negotiate(err); | |
| //Propagate updates to embedded (i.e. cached) arrays of tutorials on our user records. | |
| // Find all user records | |
| User.find().exec(function (err, users) { | |
| if (err) { return res.negotiate(err); } | |
| // Iterate through each user record in the users array | |
| async.each(users, function (user, next){ | |
| // Look to see whether the user's user.tutorials array contains the | |
| // id of the tutorial that's being updated and create a reference | |
| // named cachedTutorial if it contains the updated tutorial id. | |
| var cachedTutorial = _.find(user.tutorials, { id: +req.param('id') }); | |
| // Otherwise, keep moving on to the next user. | |
| if (!cachedTutorial) { | |
| return next(); | |
| } | |
| // update the reference which will also update user.tutorials | |
| cachedTutorial.title = req.param('title'); | |
| cachedTutorial.description = req.param('description'); | |
| // We could also have written it this way | |
| // var cachedTutorial = _.find(user.tutorials, function(tutorial){ | |
| // if (tutorial.id === +req.param('id')) { | |
| // tutorial.title = req.param('title'); | |
| // tutorial.description = req.param('description'); | |
| // } else { | |
| // return next(); | |
| // } | |
| // }); | |
| // If this user has the tutorial that's being updated in `user.tutorials` | |
| // update that array with the new values. | |
| User.update({ | |
| id: user.id | |
| }, { | |
| tutorials: user.tutorials | |
| }) | |
| .exec(function (err) { | |
| if (err) { return next(err); } | |
| return next(); | |
| }); | |
| }, function (err) { | |
| if (err) {return res.negotiate(err);} | |
| return res.ok(); | |
| }); | |
| }); | |
| }); | |
| }); | |
| }); | |
| }, |
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| /** | |
| * User.js | |
| * | |
| * @description :: TODO: You might write a short summary of how this model works and what it represents here. | |
| * @docs :: http://sailsjs.org/#!documentation/models | |
| */ | |
| module.exports = { | |
| attributes: { | |
| email: { | |
| type: 'string', | |
| email: 'true', | |
| unique: 'true' | |
| }, | |
| username: { | |
| type: 'string', | |
| unique: 'true' | |
| }, | |
| encryptedPassword: { | |
| type: 'string' | |
| }, | |
| gravatarURL: { | |
| type: 'string' | |
| }, | |
| deleted: { | |
| type: 'boolean' | |
| }, | |
| admin: { | |
| type: 'boolean' | |
| }, | |
| banned: { | |
| type: 'boolean' | |
| }, | |
| passwordRecoveryToken: { | |
| type: 'string' | |
| }, | |
| // tutorials: { | |
| // type: 'json' | |
| // }, | |
| tutorials: { | |
| collection: 'tutorial', | |
| }, | |
| ratings: { | |
| collection: 'rating', | |
| via: 'byUser' | |
| }, | |
| // Who is following me? | |
| followers: { | |
| collection: 'user', | |
| via: 'following' | |
| }, | |
| // Who am I following? | |
| following: { | |
| collection: 'user', | |
| via: 'followers' | |
| }, | |
| toJSON: function() { | |
| var obj = this.toObject(); | |
| delete obj.password; | |
| delete obj.confirmation; | |
| delete obj.encryptedPassword; | |
| return obj; | |
| } | |
| } | |
| }; |
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| /** | |
| * Tutorial.js | |
| * | |
| * @description :: TODO: You might write a short summary of how this model works and what it represents here. | |
| * @docs :: http://sailsjs.org/#!documentation/models | |
| */ | |
| module.exports = { | |
| attributes: { | |
| title: { | |
| type: 'string' | |
| }, | |
| description: { | |
| type: 'string' | |
| }, | |
| // owner: { | |
| // type: 'json' | |
| // }, | |
| owner: { | |
| model: 'user' | |
| }, | |
| // An array of video ids representing the manual (human) ordering of videos. | |
| videoOrder: { | |
| // e.g. | |
| // [ | |
| // 3 | |
| // ] | |
| type: 'json' | |
| // (this is always ok because there will never be millions of videos per tutorial) | |
| }, | |
| videos: { | |
| collection: 'video', | |
| via: 'tutorialAssoc' | |
| }, | |
| ratings: { | |
| collection: 'rating', | |
| via: 'byTutorial' | |
| } | |
| } | |
| }; | |
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| createTutorial: function(req, res) { | |
| /* | |
| __ __ _ _ _ _ _ | |
| \ \ / /_ _| (_)__| |__ _| |_(_)___ _ _ | |
| \ V / _` | | / _` / _` | _| / _ \ ' \ | |
| \_/\__,_|_|_\__,_\__,_|\__|_\___/_||_| | |
| */ | |
| if (!_.isString(req.param('title'))) { | |
| return res.badRequest(); | |
| } | |
| if (!_.isString(req.param('description'))) { | |
| return res.badRequest(); | |
| } | |
| // Find the user that's adding a tutorial | |
| User.findOne({ | |
| id: req.session.userId | |
| }).exec(function(err, foundUser){ | |
| if (err) return res.negotiate; | |
| if (!foundUser) return res.notFound(); | |
| Tutorial.create({ | |
| title: req.param('title'), | |
| description: req.param('description'), | |
| owner: foundUser.id, | |
| videoOrder: [], | |
| }).exec(function(err, createdTutorial){ | |
| if (err) return res.negotiate(err); | |
| foundUser.tutorials.add(createdTutorial.id); | |
| foundUser.save(function (err) { | |
| if (err) return res.negotiate(err); | |
| return res.json({id: createdTutorial.id}); | |
| }); | |
| }); | |
| }); | |
| }, |
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| createTutorial: function(req, res) { | |
| /* | |
| __ __ _ _ _ _ _ | |
| \ \ / /_ _| (_)__| |__ _| |_(_)___ _ _ | |
| \ V / _` | | / _` / _` | _| / _ \ ' \ | |
| \_/\__,_|_|_\__,_\__,_|\__|_\___/_||_| | |
| */ | |
| if (!_.isString(req.param('title'))) { | |
| return res.badRequest(); | |
| } | |
| if (!_.isString(req.param('description'))) { | |
| return res.badRequest(); | |
| } | |
| // Find the user that's adding a tutorial | |
| User.findOne({ | |
| id: req.session.userId | |
| }).exec(function(err, foundUser){ | |
| if (err) return res.negotiate; | |
| if (!foundUser) return res.notFound(); | |
| Tutorial.create({ | |
| title: req.param('title'), | |
| description: req.param('description'), | |
| owner: foundUser.id, | |
| videoOrder: [], | |
| }).exec(function(err, createdTutorial){ | |
| if (err) return res.negotiate(err); | |
| foundUser.tutorials.add(createdTutorial.id); | |
| foundUser.save(function (err) { | |
| if (err) return res.negotiate(err); | |
| User.findOne({ | |
| id: req.session.userId | |
| }) | |
| .populate('tutorials') | |
| .exec(function (err, demoUser){ | |
| if (err) return res.negotiate(err); | |
| console.log('demoUser: ', demoUser); | |
| Tutorial.findOne({ | |
| id: createdTutorial.id | |
| }) | |
| .populate('owner') | |
| .exec(function (err, demoTutorial){ | |
| if (err) return res.negotiate(err); | |
| console.log('demoTutorial: ', demoTutorial); | |
| return res.json({id: createdTutorial.id}); | |
| }); | |
| }); | |
| }); | |
| }); | |
| }); | |
| }, |
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| /** | |
| * User.js | |
| * | |
| * @description :: TODO: You might write a short summary of how this model works and what it represents here. | |
| * @docs :: http://sailsjs.org/#!documentation/models | |
| */ | |
| module.exports = { | |
| attributes: { | |
| email: { | |
| type: 'string', | |
| email: 'true', | |
| unique: 'true' | |
| }, | |
| username: { | |
| type: 'string', | |
| unique: 'true' | |
| }, | |
| encryptedPassword: { | |
| type: 'string' | |
| }, | |
| gravatarURL: { | |
| type: 'string' | |
| }, | |
| deleted: { | |
| type: 'boolean' | |
| }, | |
| admin: { | |
| type: 'boolean' | |
| }, | |
| banned: { | |
| type: 'boolean' | |
| }, | |
| passwordRecoveryToken: { | |
| type: 'string' | |
| }, | |
| // tutorials: { | |
| // type: 'json' | |
| // }, | |
| // tutorials: { | |
| // collection: 'tutorial', | |
| // }, | |
| tutorials: { | |
| collection: 'tutorial', | |
| via: 'owner' | |
| }, | |
| ratings: { | |
| collection: 'rating', | |
| via: 'byUser' | |
| }, | |
| // Who is following me? | |
| followers: { | |
| collection: 'user', | |
| via: 'following' | |
| }, | |
| // Who am I following? | |
| following: { | |
| collection: 'user', | |
| via: 'followers' | |
| }, | |
| toJSON: function() { | |
| var obj = this.toObject(); | |
| delete obj.password; | |
| delete obj.confirmation; | |
| delete obj.encryptedPassword; | |
| return obj; | |
| } | |
| } | |
| }; |
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| createTutorial: function(req, res) { | |
| /* | |
| __ __ _ _ _ _ _ | |
| \ \ / /_ _| (_)__| |__ _| |_(_)___ _ _ | |
| \ V / _` | | / _` / _` | _| / _ \ ' \ | |
| \_/\__,_|_|_\__,_\__,_|\__|_\___/_||_| | |
| */ | |
| if (!_.isString(req.param('title'))) { | |
| return res.badRequest(); | |
| } | |
| if (!_.isString(req.param('description'))) { | |
| return res.badRequest(); | |
| } | |
| // Find the user that's adding a tutorial | |
| User.findOne({ | |
| id: req.session.userId | |
| }).exec(function(err, foundUser){ | |
| if (err) return res.negotiate; | |
| if (!foundUser) return res.notFound(); | |
| Tutorial.create({ | |
| title: req.param('title'), | |
| description: req.param('description'), | |
| owner: foundUser.id, | |
| }) | |
| .exec(function(err, createdTutorial){ | |
| if (err) return res.negotiate(err); | |
| return res.json({id: createdTutorial.id}); | |
| }); | |
| }); | |
| }, |
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| updateTutorial: function(req, res) { | |
| // Validate parameters | |
| if (!_.isString(req.param('title'))) { | |
| return res.badRequest(); | |
| } | |
| if (!_.isString(req.param('description'))) { | |
| return res.badRequest(); | |
| } | |
| // Update the tutorial coercing the incoming id from a string to an integer using the unary `+` | |
| Tutorial.update({ | |
| id: +req.param('id') | |
| }, { | |
| title: req.param('title'), | |
| description: req.param('description') | |
| }).exec(function (err) { | |
| if (err) return res.negotiate(err); | |
| return res.ok(); | |
| }); | |
| }, |
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| tutorialDetail: function(req, res) { | |
| Tutorial.findOne({ | |
| id: req.param('id') | |
| }) | |
| .populate('owner') | |
| .exec(function(err, foundTutorial){ | |
| if (err) return res.negotiate(err); | |
| if (!foundTutorial) return res.notFound(); | |
| foundTutorial.owner = foundTutorial.owner.username; | |
| // If not logged in set `me` property to `null` and pass the tutorial to the view | |
| if (!req.session.userId) { | |
| return res.view('tutorials-detail', { | |
| me: null, | |
| stars: foundTutorial.stars, | |
| tutorial: foundTutorial | |
| }); | |
| } | |
| User.findOne(req.session.userId) | |
| .exec(function(err, user) { | |
| if (err) return res.negotiate(err); | |
| if (!user) { | |
| sails.log.verbose('Session refers to a user who no longer exists- did you delete a user, then try to refresh the page with an open tab logged-in as that user?'); | |
| return res.view('tutorials-detail', { | |
| me: null | |
| }); | |
| } | |
| // We'll provide `me` as a local to the profile page view. | |
| // (this is so we can render the logged-in navbar state, etc.) | |
| var me = { | |
| gravatarURL: user.gravatarURL, | |
| username: user.username, | |
| admin: user.admin | |
| }; | |
| if (user.username === foundTutorial.owner) { | |
| me.isMe = true; | |
| return res.view('tutorials-detail', { | |
| me: me, | |
| showAddTutorialButton: true, | |
| stars: foundTutorial.stars, | |
| tutorial: foundTutorial | |
| }); | |
| } else { | |
| return res.view('tutorials-detail', { | |
| me: { | |
| gravatarURL: user.gravatarURL, | |
| username: user.username, | |
| admin: user.admin | |
| }, | |
| showAddTutorialButton: true, | |
| stars: foundTutorial.stars, | |
| tutorial: foundTutorial | |
| }); | |
| } | |
| }); | |
| }); | |
| }, |
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| tutorialDetail: function(req, res) { | |
| Tutorial.findOne({ | |
| id: req.param('id') | |
| }) | |
| .populate('owner') | |
| .populate('videos') | |
| .exec(function(err, foundTutorial){ | |
| if (err) return res.negotiate(err); | |
| if (!foundTutorial) return res.notFound(); | |
| foundTutorial.owner = foundTutorial.owner.username; | |
| foundTutorial.created = DatetimeService.getTimeAgo({date: foundTutorial.createdAt}); | |
| foundTutorial.updated = DatetimeService.getTimeAgo({date: foundTutorial.updatedAt}); | |
| // If not logged in set `me` property to `null` and pass the tutorial to the view | |
| if (!req.session.userId) { | |
| return res.view('tutorials-detail', { | |
| me: null, | |
| stars: foundTutorial.stars, | |
| tutorial: foundTutorial | |
| }); | |
| } | |
| User.findOne(req.session.userId) | |
| .exec(function(err, user) { | |
| if (err) return res.negotiate(err); | |
| if (!user) { | |
| sails.log.verbose('Session refers to a user who no longer exists- did you delete a user, then try to refresh the page with an open tab logged-in as that user?'); | |
| return res.view('tutorials-detail', { | |
| me: null | |
| }); | |
| } | |
| // We'll provide `me` as a local to the profile page view. | |
| // (this is so we can render the logged-in navbar state, etc.) | |
| var me = { | |
| gravatarURL: user.gravatarURL, | |
| username: user.username, | |
| admin: user.admin | |
| }; | |
| if (user.username === foundTutorial.owner) { | |
| me.isMe = true; | |
| return res.view('tutorials-detail', { | |
| me: me, | |
| showAddTutorialButton: true, | |
| stars: foundTutorial.stars, | |
| tutorial: foundTutorial | |
| }); | |
| } else { | |
| return res.view('tutorials-detail', { | |
| me: { | |
| gravatarURL: user.gravatarURL, | |
| username: user.username, | |
| admin: user.admin | |
| }, | |
| showAddTutorialButton: true, | |
| stars: foundTutorial.stars, | |
| tutorial: foundTutorial | |
| }); | |
| } | |
| }); | |
| }); | |
| }, |
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