Add observationvariables endpoint

[dlebauer]

These are the responseswithin observationvariables

• traits: unique variables.name where variables.id in traits.variable_id
• methods: unique methods.name where method.id in traits.method_id
• scales: unique variables.units where variables.id in traits.variable_id
  • "scaleName" : "Centimeter"
  • (and?/) or including units explicitly as proposed in: Add "units" field to observationVariable.scale plantbreeding/BrAPI#441
• ontologies: (optional? there is a dictionary of ontology term mappings in contrib/variables_annotations.csv)
• Here is an example of a valid endpoint for genomes2fields data https://imagebreed.org/brapi/v1/studies/241/observationvariables

note:

BrAPI Term	BETYdb term	notes
traitName	variables.name
ObservationVariable	variable+method+units	in BrAPI a variable is defined as variable+method+scale
ObservationUnit	sites	these are individual plots
observationDbId	traits	these are individual observations
method	method	yay something matches
scaleName	units
traitClass	variables.type

[Chris-Schnaufer]

End point is /studies/{studyDbId}/observationvariables
Note: this is the end point for this issue

[dlebauer]

@Chris-Schnaufer do you mean that this should work? http://terraref.org/brapi/v1/studies/6000000034/observationVariables (b/c it doesn't; also doesn't work locally on the master branch)

I see scales in http://localhost:5000/brapi/v1/variables but these don't seem to propoagate to the observationvariables endpoint

[Chris-Schnaufer]

I will check this out

@dlebauer I clarified my previous comment - it was to indicate what the endpoint was, not that it was implemented