Eki Eqbal Eki Eqbal - 5 months ago 14
Ruby Question

How to define array of hashes in Grape?

I'm using Ember as my front-end and Grape API to serve my API.

The front-end send something like:

{
"service"=>{
"name"=>"Name",
"duration"=>"30",
"user"=>nil,
"organization"=>"org",
"category"=>nil,
"description"=>"description",
"disabled"=>true,
"color"=>nil,
"availabilities"=>[
{
"day"=>"Saturday",
"enabled"=>false,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
}
]
},
{
"day"=>"Sunday",
"enabled"=>false,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
}
]
},
{
"day"=>"Monday",
"enabled"=>true,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
},
{
"startAt"=>"05:00 AM",
"endAt"=>"09:00 PM"
},
{
"startAt"=>"05:00 AM",
"endAt"=>"09:00 PM"
}
]
},
{
"day"=>"Tuesday",
"enabled"=>true,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
}
]
},
{
"day"=>"Wednesday",
"enabled"=>true,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
}
]
},
{
"day"=>"Thursday",
"enabled"=>true,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
}
]
},
{
"day"=>"Friday",
"enabled"=>true,
"timeSlots"=>[
{
"startAt"=>"09:00 AM",
"endAt"=>"05:00 PM"
}
]
}
]
}
}


And I'm struggling to implement Grape api interface to receive the payload, I ended up with something like:

resource :services do
params do
requires :service, type: Hash do
requires :name, type: String
requires :organization, type: String
requires :duration, type: Integer
requires :category, type: String
optional :color, type: String
optional :description, type: String
optional :disabled, type: Boolean
requires :availabilities, type: Array do
requires :day, type: String
optional :enabled, type: Boolean
optional :timeSlots, type: Array do
requires :startAt, type: Time
requires :endtAt, type: Time
end
end
end
end
post do
puts params
end
end


But with no luck as I'm getting the following error:

ERROR -- service[availabilities][0][timeSlots][0][endtAt] is missing

Answer

You can try to use "group" to indicate the type of your array elements.

Example (updated):

params do
  group :services, type: Array, desc: "An array of services" do
    requires :name, type: String
    requires :organization, type: String
    requires :duration, type: Integer
    ...
  end
end
put '/test' do
  s = []
  params[:services].each do |service|
    s << service
  end
  return s
end