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/20921/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 20921,
    "uuid": "f9ade9b35690448a925c848ad174575c",
    "title": "WCRP CMIP5: The CNRM-CERFACS team CNRM-CM5 model output collection",
    "abstract": "WCRP CMIP5: The CNRM-CERFACS team CNRM-CM5 model output collection.The CNRM-CERFACS team consisted of the following agencies: Centre National de Recherches Meteorologiques (CNRM) and Centre Europeen de Recherche et Formation Avancees en Calcul Scientifique (CERFACS).",
    "keywords": "CMIP5, WCRP, climate change, CNRM-CERFACS, CNRM-CM5, CMIP",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-03-17T13:58:02.424714",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20920/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20924/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20927/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20930/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20933/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20936/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20939/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20942/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20945/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20948/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20951/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20954/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20957/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20960/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20963/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20966/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20969/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20972/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20975/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20978/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20981/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20984/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20987/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20990/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20993/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20996/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/20999/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21002/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21005/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21008/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21011/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21014/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21017/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21020/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21023/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21026/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21029/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21032/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21035/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21038/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21041/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21044/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/21047/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81862/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81853/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81854/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81860/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81861/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81852/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81856/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81857/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81855/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81858/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/81859/?format=api"
    ]
}