Challenges

Pre-requisites:

• Create a challenges_test and challenges database:

  CREATE DATABASE challenges;
  CREATE DATABASE challenges_test

• Initialise tables and populate your database by running

  npm run db

• creates a 'Challenges' table

A plugin which exposes the following functions on the request.server.methods.pg.challengs object:

add(challengeObject, cb)

function to add challenge to pre-existing challenge table challengeObject:

{
  title: 'Tea',
  description: 'With milk',
  org_id: 1,
  creator_id: 1,
  active: true
}

Returns [{ id: x }] if challenge was successfully added, where x is assigned by postgres. Returns an error if unsuccessful.

edit(challengeId, updatedObject, cb)

function to edit the title and description of a pre-existing challenge. where: challengeId = integer and id of existing challenge that needs to be updated updatedObject takes the following form:

{
  title: 'Two teas',
  description: 'With milk and one sugar',
}

Returns [] if challenge was successfully. Returns an error if unsuccessful.

getById(id, cb)

function to get a specific challenge, and associated tags, id: Integer

returns:

{
  id: 2,
  title: 'Challenge Number 2',
  description: 'How can I...?',
  org_id: 1,
  org_name: 'Apple'
  creator_id: 3,
  tags: [ { id: 2, name: 'Corporate' } ] || [] // if no tags
}

or an empty array [] if no challenge was found.

getByTag(id, cb)

function to get all challenges that contain a certain tag id: Integer if we want to filter by a tag id or false if we do not want to filter

If a tag id is given, returns:

{ filter: { id: 69, name: 'Design for disassembly' },
  challenges:
   [ { id: 4,
       date: '2016-12-07 15:36:24.636112+00',
       title: 'Challenge Number 4',
       description: 'Who should I...?',
       org_id: 2,
       shared_by: 'dwyl',
       tags:
        [
          { tag_id: 9, tag_name: 'Automotive and Transport Manufacturing' },
          { tag_id: 11, tag_name: 'Chemicals' },
          { tag_id: 60, tag_name: 'Secondary education' }
        ]
      },
     { id: 7,
       date: '2016-12-07 15:36:24.636112+00',
       title: 'Challenge Number 7',
       description: 'Is it possible to...?',
       org_id: 4,
       shared_by: 'EMF',
       tags: null // if no tags have been attached to the challenge
     },
      ...
    ]
}

If false is given, returns the same shape, but with

filter_tag: undefined

checkEditable(userId, chalId, cb)

returns Boolean If user and belongs to the org that created the challenge, return true; otherwise false.

getMatchingOrgs(chal_id, cb)

Returns an array of orgs. Empty array if no orgs share active tags with the given challenge. The orgs are ordered by number of tags that they matched the challenge with.

[
  {
    "name": "Asda",
    "id": 6,
    "tags": [
      {
        "tag_name": "Automotive and Transport Manufacturing",
        "tag_id": 9
      },
      {
        "tag_name": "Chemicals",
        "tag_id": 11
      }
    ]
  },
  {
    "name": "EMF",
    "id": 4,
    "tags": [
      {
        "tag_name": "Automotive and Transport Manufacturing",
        "tag_id": 9
      }
    ]
  }
]

getArchived(org_id, cb)

Returns an array of challenge objects for a given organisation.

{
  id: 1,
  title: 'Challenge Number 1',
  description: 'What can I...?',
  org_id: 1,
  creator_id: 3
}