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/3806/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3806,
    "uuid": "775634f7e339b5262067e28a5d7b679d",
    "title": "European Centre for Medium-Range Weather Forecasts (ECMWF) 40-year Re-Analysis (ERA-40) model data",
    "abstract": "The European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-40 Re-Analysis Project consists of a number of climate datasets spanning the period mid-1957 to August 2002 using a consistent model. The data overlaps with the earlier ECMWF ERA-15 Re-analysis project (1979-1993). \r\n\r\nThis dataset collection contains both initialised and uninitialised T106 spectral upper air data (approximately 1 degree resolution) on model levels and standard pressure levels. Corresponding surface parameters are held on a reduced Gaussian N80 grid. Regular 2.5 degree x 2.5 degree gridded data are also stored on standard pressure levels and at the surface.",
    "keywords": "ECMWF, ERA, ERA-40, reanalysis, surface, model",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2006-12-10T03:17:46",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12701/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12702/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12703/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12704/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12705/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12706/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12707/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12709/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12711/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12712/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12714/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12725/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12727/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12729/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12730/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12742/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12745/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12747/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12751/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12752/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12754/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12757/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12758/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12759/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12760/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12761/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12762/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12769/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12771/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12772/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12773/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12779/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12780/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12781/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2542/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2543/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/10313/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18870/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18872/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18873/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18874/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18876/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42630/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42631/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/18871/?format=api"
    ]
}