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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Schematic with multi select x-promt errors when using command line parameter:  'path \".foo\" should be array'","articleBody":"\u003c!--🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅\r\n\r\nOh hi there! 😄\r\n\r\nTo expedite issue processing please search open and closed issues before submitting a new one.\r\nExisting issues often contain information about workarounds, resolution, or progress updates.\r\n\r\n🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅🔅--\u003e\r\n\r\n\r\n# 🐞 Bug report\r\n\r\n### Command (mark with an `x`)\r\n\u003c!-- Can you pin-point the command or commands that are effected by this bug? --\u003e\r\n\u003c!-- ✍️edit: --\u003e\r\n\r\n- [ ] new\r\n- [ ] build\r\n- [ ] serve\r\n- [ ] test\r\n- [ ] e2e\r\n- [x] generate\r\n- [x] add\r\n- [ ] update\r\n- [ ] lint\r\n- [ ] xi18n\r\n- [ ] run\r\n- [ ] config\r\n- [ ] help\r\n- [ ] version\r\n- [ ] doc\r\n\r\n\r\n### Is this a regression?\r\n\r\nNo, it's not. Multi select prompt is just supported within angular cli \u003e `9.0.0-rc.3`.\r\n\r\n### Description\r\n\r\nCreating an angular schematic that prompts the user for multiple options is possible since https://github.com/angular/angular-cli/issues/16104. The prompt works quite good now but using the command line for multi selections will cause an error:\r\n\r\n```text\r\nError: Schematic input does not validate against the Schema: {\"name\":\"paul\"}\r\nErrors:\r\n\r\n  Data path \".name\" should be array.\r\n...\r\n```\r\n\r\nAt first I opened an issue for the docs because I thought it's just not documented: https://github.com/angular/angular/issues/33851 But after checking the implementation of the angular guard schematic which has `--implements` parameter (which works) and creating the minimal reproduction repo (see underneath), I think it's a bug somewhere in `@angular-devkit/schematics-cli`. \r\n\r\n## 🔬 Minimal Reproduction\r\nI created a very minimal repo for reproduction:\r\nhttps://github.com/d-koppenhagen/ngx-multi-select-schematic\r\n\r\n```bash\r\nnpm i -g @angular-devkit/schematics-cli@next\r\ngit clone git@github.com:d-koppenhagen/ngx-multi-select-schematic.git\r\ncd ngx-multi-select-schematic\r\nnpm i\r\n```\r\n\r\n**✅ Using prompt works good:**\r\n```bash\r\nschematics .:hello --debug=false\r\n? Which interfaces would you like to implement? (Press \u003cspace\u003e to select, \u003ca\u003e to toggle all, \u003c\r\ni\u003e to invert selection)\r\n❯◉ hans\r\n ◉ peter\r\n ◉ paul\r\nschematics .:hello --debug=false --name=\"paul, peter\"\r\n```\r\n\r\n**❌Using command line parameter fails (event not with just a single name handed over:**\r\n```text\r\nschematics .:hello --debug=false --name=\"paul\"\r\nError: Schematic input does not validate against the Schema: {\"name\":\"paul\"}\r\nErrors:\r\n\r\n  Data path \".name\" should be array.\r\n    at MapSubscriber.registry.compile.pipe.operators_1.map.result [as project] (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/@angular-devkit/schematics/tools/schema-option-transform.js:31:27)\r\n    at MapSubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/map.js:49:35)\r\n    at MapSubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n    at ThrowIfEmptySubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/throwIfEmpty.js:44:26)\r\n    at ThrowIfEmptySubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n    at TakeSubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/take.js:54:30)\r\n    at TakeSubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n    at MergeMapSubscriber.notifyNext (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/mergeMap.js:92:26)\r\n    at InnerSubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/InnerSubscriber.js:28:21)\r\n    at InnerSubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n```\r\n\r\n\r\n\r\n## 🔥 Exception or Error\r\n```text\r\nError: Schematic input does not validate against the Schema: {\"name\":\"paul\"}\r\nErrors:\r\n\r\n  Data path \".name\" should be array.\r\n    at MapSubscriber.registry.compile.pipe.operators_1.map.result [as project] (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/@angular-devkit/schematics/tools/schema-option-transform.js:31:27)\r\n    at MapSubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/map.js:49:35)\r\n    at MapSubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n    at ThrowIfEmptySubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/throwIfEmpty.js:44:26)\r\n    at ThrowIfEmptySubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n    at TakeSubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/take.js:54:30)\r\n    at TakeSubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n    at MergeMapSubscriber.notifyNext (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/operators/mergeMap.js:92:26)\r\n    at InnerSubscriber._next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/InnerSubscriber.js:28:21)\r\n    at InnerSubscriber.Subscriber.next (/usr/local/lib/node_modules/@angular-devkit/schematics-cli/node_modules/rxjs/internal/Subscriber.js:66:18)\r\n```\r\n\r\n\r\n## 🌍 Your Environment\r\n\u003cpre\u003e\u003ccode\u003e\r\nng version\r\n     _                      _                 ____ _     ___\r\n    / \\   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|\r\n   / △ \\ | '_ \\ / _` | | | | |/ _` | '__|   | |   | |    | |\r\n  / ___ \\| | | | (_| | |_| | | (_| | |      | |___| |___ | |\r\n /_/   \\_\\_| |_|\\__, |\\__,_|_|\\__,_|_|       \\____|_____|___|\r\n                |___/\r\n    \r\n\r\nAngular CLI: 9.0.0-rc.4\r\nNode: 10.14.0\r\nOS: darwin x64\r\n\r\nAngular: undefined\r\n... \r\nIvy Workspace: Yes\r\n\r\nPackage                      Version\r\n------------------------------------------------------\r\n@angular-devkit/architect    0.900.0-rc.4 (cli-only)\r\n@angular-devkit/core         9.0.0-rc.4\r\n@angular-devkit/schematics   9.0.0-rc.4\r\n@schematics/angular          9.0.0-rc.4 (cli-only)\r\n@schematics/update           0.900.0-rc.4 (cli-only)\r\nrxjs                         6.5.3\r\ntypescript                   3.6.4\r\n\u003c/code\u003e\u003c/pre\u003e\r\n\r\n","author":{"url":"https://github.com/d-koppenhagen","@type":"Person","name":"d-koppenhagen"},"datePublished":"2019-11-29T17:15:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/16320/angular-cli/issues/16320"}