【发布时间】：2016-07-18 21:48:54
【问题描述】：
我正在使用一个名为 Fusion Charts 的 gem 来为我制作图表，但是控制器中的说明比我想要的要多得多。
这是一个有效的调用。
weights_over_time = []
weights.each do |weight|
weights_over_time.push({
label: weight.created_at.strftime("%m-%-d-%y"),
value: weight.weight,
})
end
@weights_chart = Fusioncharts::Chart.new({
type: 'line',
renderAt: 'chart-container',
width: '400',
height: '300',
dataFormat: 'json',
dataSource: {
"chart": {
"caption": "Weight over time",
"xAxisName": "Date",
"yAxisName": "Weight",
"lineThickness": "2",
"paletteColors": "#0075c2",
"baseFontColor": "#333333",
"baseFont": "Helvetica Neue,Arial",
"captionFontSize": "14",
"subcaptionFontSize": "14",
"subcaptionFontBold": "0",
"showBorder": "0",
"bgColor": "#ffffff",
"showShadow": "0",
"canvasBgColor": "#ffffff",
"canvasBorderAlpha": "0",
"divlineAlpha": "100",
"divlineColor": "#999999",
"divlineThickness": "1",
"divLineIsDashed": "1",
"divLineDashLen": "1",
"divLineGapLen": "1",
"showXAxisLine": "1",
"xAxisLineThickness": "1",
"xAxisLineColor": "#999999",
"showAlternateHGridColor": "0"
},
data: weights_over_time
}
})
end
这是我尝试将大部分内容放入模型中的尝试，这导致数组的“未定义方法keys”。我想如果我可以用动态数据作为参数初始化所有静态的 json，它可以工作。我尝试使用 Hash[*array] 将数组转换为散列，我得到“散列的奇数个参数”。
class Example
class Fusioncharts::Chart
def initialize(weights_over_time)
self.chart {
type: 'area2d',
renderAt: 'chart-container',
width: '400',
height: '300',
dataFormat: 'json',
dataSource: {
"chart": {
"caption": "Weight over time",
"xAxisName": "Date",
"yAxisName": "Weight",
"paletteColors": "#0075c2",
"bgColor": "#ffffff",
"showBorder": "0",
"showCanvasBorder": "0",
"plotBorderAlpha": "10",
"usePlotGradientColor": "0",
"plotFillAlpha": "50",
"showXAxisLine": "1",
"axisLineAlpha": "25",
"divLineAlpha": "10",
"showValues": "1",
"showAlternateHGridColor": "0",
"captionFontSize": "14",
"subcaptionFontSize": "14",
"subcaptionFontBold": "0",
"toolTipColor": "#ffffff",
"toolTipBorderThickness": "0",
"toolTipBgColor": "#000000",
"toolTipBgAlpha": "80",
"toolTipBorderRadius": "2",
"toolTipPadding": "5"
},
data: weights_over_time
}
}
end
end
end
class ExamplesController < ApplicationController
def fc_json
@user = current_user
@weights = @user.weights.all
weights = @weights.select(:weight, :created_at)
weights_over_time = []
weights.each do |weight|
weights_over_time.push(
weights: {
x: weight.created_at,
y: weight.weight
}
)
end
@chart = Fusioncharts::Chart.new(weights_over_time)
end
end
我当然欢迎任何批评以采用最佳实践/使其更具可读性，但我最关心的是我的控制器中没有所有这些。
错误信息：
ExamplesController#fc_json 中的 NoMethodError #
的未定义方法“键”突出显示这一行：
@chart = Fusioncharts::Chart.new(weights_over_time)
这是完整的跟踪。
fusioncharts-rails (0.0.2) lib/fusioncharts/rails/chart.rb:115:in `parse_options'
fusioncharts-rails (0.0.2) lib/fusioncharts/rails/chart.rb:16:in `initialize'
app/controllers/examples_controller.rb:19:in `new'
app/controllers/examples_controller.rb:19:in `fc_json'
actionpack (4.2.0) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (4.2.0) lib/abstract_controller/base.rb:198:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.2.0) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:117:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:151:in `block in halting_and_conditional'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:234:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:169:in `block in halting'
activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:92:in `_run_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_process_action_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.0) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.2.0) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (4.2.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.2.0) lib/active_support/notifications.rb:164:in `instrument'
actionpack (4.2.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.2.0) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.2.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.2.0) lib/abstract_controller/base.rb:137:in `process'
actionview (4.2.0) lib/action_view/rendering.rb:30:in `process'
actionpack (4.2.0) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.2.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.2.0) lib/action_controller/metal.rb:236:in `block in action'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:42:in `serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.0) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.0) lib/action_dispatch/routing/route_set.rb:802:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.6.4) lib/rack/etag.rb:24:in `call'
rack (1.6.4) lib/rack/conditionalget.rb:25:in `call'
rack (1.6.4) lib/rack/head.rb:13:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/flash.rb:260:in `call'
rack (1.6.4) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.4) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
activerecord (4.2.0) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.2.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:647:in `call'
activerecord (4.2.0) lib/active_record/migration.rb:378:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `call'
activesupport (4.2.0) lib/active_support/callbacks.rb:88:in `_run_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:734:in `_run_call_callbacks'
activesupport (4.2.0) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
web-console (2.2.1) lib/web_console/middleware.rb:39:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.0) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.0) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.4) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.4) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.0) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.4) lib/rack/lock.rb:17:in `call'
actionpack (4.2.0) lib/action_dispatch/middleware/static.rb:113:in `call'
rack (1.6.4) lib/rack/sendfile.rb:113:in `call'
railties (4.2.0) lib/rails/engine.rb:518:in `call'
railties (4.2.0) lib/rails/application.rb:164:in `call'
rack (1.6.4) lib/rack/lock.rb:17:in `call'
rack (1.6.4) lib/rack/content_length.rb:15:in `call'
rack (1.6.4) lib/rack/handler/webrick.rb:88:in `service'
/Users/gabepressman1/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service'
/Users/gabepressman1/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run'
/Users/gabepressman1/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread'
【问题讨论】：
-
这真的是你的代码吗？您的课程似乎甚至不应该是可解析的。 （
initialize在self.chart{里面，而且没有右花括号？） -
能否分享一下实际的错误信息？
标签： ruby-on-rails fusioncharts