Cannot define default projection and request specific field

[Hugoch]

Hi,

I am trying to exclude a field from a specific endpoint when requesting /endpoint. I use

'datasource': {
            'projection': {
                'my_field_to_exclude': 0,
            }
        },

which works well. I can get the field on demand via /endpoint?projection={"my_field_to_exclude":1} (similar to http://python-eve.org/features.html#projection-filestorage).

However I want to be able to query the endpoint for a given field with /endpoint?projection={"another_field":1}. I expect to get a response with another_field only but I only get

<link rel="collection" href="endpoint" title="mycollection"/>
<link rel="parent" href="/" title="home"/>
<_created>1970-01-01T00:00:00.000</_created>
<_etag>ce526180ec8bf46972f44049d7db1eaf25cca381</_etag>
<_id>731730</_id>
<_updated>1970-01-01T00:00:00.000</_updated>

If I remove the datasource projection, the field appears.

Any ideas ? I am missing anything ?

Thx !

Using Eve-0.7.4.

[Amedeo91]

Below the code that merge the two projection (base.py line 422). For me is working fine with Eve 0.7.1

If you see any use case that are not covered, please provide a PR :)

    fields = projection_
    if client_projection:
        if projection_:
            # only allow fields which are included with the standard
            # projection for the resource (avoid sniffing of private
            # fields)
            keep_fields = auto_fields(resource)
            if 0 not in client_projection.values():
                # inclusive projection - all values are 0 unless spec. or
                # auto
                fields = dict([(field, field in keep_fields) for field in
                               fields.keys()])
            for field, value in client_projection.items():
                field_base = field.split('.')[0]
                if field_base not in keep_fields and field_base in fields:
                    fields[field] = value
            fields = dict([(field, 1) for field, value in fields.items() if
                           value])
        else:
            # there's no standard projection so we assume we are in a
            # allow_unknown = True
            fields = client_projection