Blitz: `blitz db` should print help message instead of error

[nabi009]

command: blitz db

› Error: Missing 1 required arg:
› command Run specific db command
› See more help with --help

the description should be clear to user, that missed command or shows db related command.
such as:
blitz db migrate
blitz db introspect
blitz db studio
etc ....

[flybayer]

Thank you @nabi009, you're absolutely right!

[peaonunes]

Happy to work on that if possible 😄

[flybayer]

@peaonunes yeah, that'd be awesome! Let us know if you need help

[nabi009]

I have done it.

[peaonunes]

Looks nice! Feel free to open up the PR 😄
suggestion: Perhaps we should use log.warning as it is a warning instead of a normal message? Idk. Seems to be missing the reset command, you can interpolate the descriptions static property to be in sync with the command defaults.

[nabi009]

@peaonunes thanks so much from your suggestion, your right but I did not change anything too much.
the original code is in /node_modules/@blitzjs/cli/lib/src/commands/db.js
exports.default = Db; Db.description =Run database commands

${chalk_1.default.bold(' migrate')} Run any needed migrations via Prisma 2 and generate Prisma Client.

${chalk_1.default.bold(' introspect')} Will introspect the database defined in db/schema.prisma and automatically \ngenerate a complete schema.prisma file for you. Lastly, it\'ll generate Prisma Client.

${chalk_1.default.bold(' studio')} Open the Prisma Studio UI at http://localhost:5555 so you can easily see and\n change data in your database.
`;

Db.args = [

{
    name: 'Commands',
    description: 'Run specific db command',
    required: true,
},

];

Db.flags = {
help: command_1.flags.help({ char: 'h' }),
};
and I changed it to this exports.default = Db;
Db.description =`Run database

${chalk_1.default.bold('👉 migrate')} Run any needed migrations via Prisma 2 and generate Prisma Client.

${chalk_1.default.bold('👉 introspect')} Will introspect the database defined in db/schema.prisma and automatically \ngenerate a complete schema.prisma file for you. Lastly, it\'ll generate Prisma Client.

${chalk_1.default.bold('👉 studio')} Open the Prisma Studio UI at http://localhost:5555 so you can easily see and\n change data in your database.
`;

Db.args = [

{
    name: 'Commands',
    description: Db.description,
    required: true,
},

];

Db.flags = {
help: command_1.flags.help({ char: 'h' }),
};`

I replace this "Run specific db command' to Db.description.

now I think gives clear descriptions to the users.

1. Error: Missing 1 required arg:
2. tells to the user that you may use these commands after db
   Commands Run database
   ›
   › 👉 migrate Run any needed migrations via Prisma 2 and generate Prisma Client.
   ›
   › 👉 introspect Will introspect the database defined in db/schema.prisma and automatically
   › generate a complete schema.prisma file for you. Lastly, it'll generate Prisma Client.
   ›
   › 👉 studio Open the Prisma Studio UI at http://localhost:5555 so you can easily see and
   › change data in your database.
3. farther you may use --help to get full cli commands help
   See more help with --help