Get a list of Collections objects. Collections have a 1:1 mapping with Observations.

### Available end points:

- `/observationcollections/` - Will list all Collections in the database
- `/observationcollections.json` - Will return all Collections in json format
- `/observationcollections/<object_id>/` - Returns Collections object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `uuid`
- `title`
- `keywords`
- `discoveryKeywords`
- `publicationState`

### How to use filters:

- `/observationcollections/?uuid=ab4ca8d019d148f78afba1cd20872bdd`

- `/observationcollections.json?publicationState=citable`

GET /api/v2/observationcollections/4602/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 4602,
    "uuid": "4f59b7dbac3dbdfaf99fc4f37456c6c5",
    "title": "Met Office Hadley Centre Coupled Model, version 3 (HadCM3-C) model integrations",
    "abstract": "HadCM3-C is a version of the HadCM3 model from the UK Met Office Hadley Centre. It is composed of two components: the atmospheric model and the ocean model (which includes a sea ice model), but also contains a detailed carbon cycle. Datasets are of the simulations for long periods of time HadCM3-C has run. These data were initially collected as part of the Stream 2 data for the EU ENSEMBLES project.",
    "keywords": "",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2008-12-10T02:39:56",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/4603/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/4605/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/4607/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/4609/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3091/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3092/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21310/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21312/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21313/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21314/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42050/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21317/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/21311/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42052/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42051/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/72491/?format=api"
    ]
}