Knex seed for postgres

I was playing around with different databases for this kit since we are mentioning over here that any database can be plugged into the kit in the same way as SQLite.

So, I tried plugging postgres and faced an issue with the knex seed provided in this kit. The problem is we are using truncate() for seed migration and comment table is referencing post table to populate the comments for a particular post_id.

Since postgres does not allow truncating tables if the table has any foreign key reference making the script yarn seed fails.

However, using raw queries from knex does push the seed to completion, but it does not insert the post_id reference in comment table.

From this (in seeds/post.js)

await Promise.all([
    knex('post').truncate(),
    knex('comment').truncate()
]);

to this

await Promise.all([
    knex.raw('TRUNCATE TABLE post CASCADE'),
    knex.raw('TRUNCATE TABLE comment CASCADE')
]);

However, it returns null for post_id

This is the final seed function in case of postgres

export async function seed(knex, Promise) {
  await Promise.all([
    knex.raw('TRUNCATE TABLE post CASCADE'),
    knex.raw('TRUNCATE TABLE comment CASCADE')
  ]);

  await Promise.all([...Array(20).keys()].map(async ii => {
    const post = await knex('post').insert({
      title: `Post title ${ii + 1}`,
      content: `Post content ${ii + 1}`
    });

    await Promise.all([...Array(2).keys()].map(async jj => {
      return knex('comment').insert({
        post_id: post[0],
        content: `Comment title ${jj + 1} for post ${post[0]}`
      });
    }));
  }));
}

P.S -> Just in case you want to see my modified knexdata.js file

export const development = {
  client: 'pg',
  debug: true,
  connection: {
    host: '127.0.0.1',
    user: 'postgres',
    password: '*****',
    database: 'dev_db'
  },
  seeds: {
    directory: './src/server/database/seeds'
  },
  migrations: {
    directory: './src/server/database/migrations'
  },
  useNullAsDefault: true
};

Another problem is the primary key (autoincrement) for post and comment table is not resetting back to 1 after running the seed every time.

Is there any workaround for this?

[mairh]

This issue can be closed once https://github.com/sysgears/apollo-fullstack-starter-kit/pull/188 is merged.

[larixer]

Undefined binding(s) error when adding post should be fixed via: https://github.com/sysgears/apollo-fullstack-starter-kit/commit/e3406ae46dc18774b41121151a99bd023a03cc23