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Rails 4,基本的JSON API - 我打算用關聯Position對象來更新Status對象。Rails 4,嵌套的屬性,強大的參數和JSON
工作狀態模式:
class JobStatus < ActiveRecord::Base
belongs_to :job
has_many :positions
accepts_nested_attributes_for :positions, limit: 1
validates :job_id,
:slug,
presence: true
end
位置模型:
class Position < ActiveRecord::Base
belongs_to :agent
belongs_to :job_status
validates :job_status_id,
:agent_id,
:lat,
:lng,
presence: true
end
任務狀態控制器:
class Api::V1::Jobs::JobStatusesController < ApplicationController
wrap_parameters format: [:json]
def create
@status = JobStatus.new(status_params)
@status.job_id = params[:job_id]
@status.positions.build
if @status.save
render :json => {status: 'success', saved_status: @status}.to_json
else
render :json => {status: 'failure', errors: @status.errors}.to_json
end
end
private
def status_params
params.permit(:job_id, :slug, :notes, :positions_attributes => [:lat, :lng, :job_status_id, :agent_id])
end
end
這是我張貼的JSON:
{
"slug":"started",
"notes":"this xyz notes",
"positions_attributes":[{
"lat" : "-72.348596",
"lng":"42.983456"
}]
}
當我這樣做@ status.positions.build 「logger.warn PARAMS」 立即上面:
{"slug"=>"started", "notes"=>"this xyz notes", "positions_attributes"=>[{"lat"=>"-72.348596", "lng"=>"42.983456"}], "action"=>"create", "controller"=>"api/v1/jobs/job_statuses", "job_id"=>"3", "job_status"=>{"slug"=>"started", "notes"=>"this xyz notes"}}
和錯誤消息被返回給我:
{
"status":"failure",
"errors":{
"positions.job_status_id":[
"can't be blank"
],
"positions.agent_id":[
"can't be blank"
],
"positions.lat":[
"can't be blank"
],
"positions.lng":[
"can't be blank"
]
}
所以我不確定我的問題在哪裏 - 我的強參數是否允許正確?我應該發佈一系列職位,因爲這是一個has_many關係,即使我只想一次創建一個職位?我沒有正確使用.build嗎?我一直在玩弄所有這些,但不是運氣 - 我很確定有一些明顯的我只是沒有看到。另外,如果有人有辦法記錄輸出的問題來自哪裏的數據,那麼這對未來會有幫助。
完美工作。謝謝! – crypticsymbols