Question

运行rake db：migrate：

时出现以下错误

ArgumentError：未知密钥::订单。有效密钥是:: class_name，：anonymous_class，：foreign_key，：validate，：autosave，：table_name，：before_add，：after_add，：before_remove，：after_remove，：extend，：primary_key，：dependent，：as，：through，：source，：source_type，：inverse_of，：counter_cache，：join_table，：foreign_type

这是我收到错误的模型：

class Report < ActiveRecord::Base

  belongs_to :user
  has_many :icons, :order => 'position_id ASC' #showing error here..
  has_many :photos, :dependent => :destroy

end

请帮忙。

Answer 1

has_many :icons, -> { order('position_id ASC') }

Answer 2

java.awt.Rectangle。

E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1 Process: [package].app, PID: 19596 java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:300) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355) at java.util.concurrent.FutureTask.setException(FutureTask.java:222) at java.util.concurrent.FutureTask.run(FutureTask.java:242) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:811) Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lorg/jfree/graphics2d/svg/SVGGraphics2D; at [package].[some.package].someMethod(Unknown) at [package].app.MainActivity$SomeTask.doInBackground(MainActivity.java:67) at [package].app.MainActivity$SomeTask.doInBackground(MainActivity.java:62) at android.os.AsyncTask$2.call(AsyncTask.java:288) at java.util.concurrent.FutureTask.run(FutureTask.java:237) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:811) Caused by: java.lang.ClassNotFoundException: Didn't find class "org.jfree.graphics2d.svg.SVGGraphics2D" on path: DexPathList[[zip file "/data/app/[package].app-2.apk"],nativeLibraryDirectories=[/data/app-lib/[package].app-2, /system/lib, /vendor/lib, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:511) at java.lang.ClassLoader.loadClass(ClassLoader.java:469) at [package].[some.package].someMethod(Unknown) at [package].app.MainActivity$SomeTask.doInBackground(MainActivity.java:67) at [package].app.MainActivity$SomeTask.doInBackground(MainActivity.java:62) at android.os.AsyncTask$2.call(AsyncTask.java:288) at java.util.concurrent.FutureTask.run(FutureTask.java:237) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) at java.lang.Thread.run(Thread.java:811) Suppressed: java.lang.NoClassDefFoundError: Failed resolution of: Ljava/awt/Graphics2D; at dalvik.system.DexFile.defineClassNative(Native Method) at dalvik.system.DexFile.defineClass(DexFile.java:222) at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:215) at dalvik.system.DexPathList.findClass(DexPathList.java:322) at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54) ... 11 more Caused by: java.lang.ClassNotFoundException: Didn't find class "java.awt.Graphics2D" on path: DexPathList[[zip file "/data/app/[package].app-2.apk"],nativeLibraryDirectories=[/data/app-lib/[package].app-2, /system/lib, /vendor/lib, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:511) at java.lang.ClassLoader.loadClass(ClassLoader.java:469) ... 16 more Suppressed: java.lang.ClassNotFoundException: java.awt.Graphics2D at java.lang.Class.classForName(Native Method) at java.lang.BootClassLoader.findClass(ClassLoader.java:781) at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) at java.lang.ClassLoader.loadClass(ClassLoader.java:504) ... 17 more Caused by: java.lang.NoClassDefFoundError: Class "Ljava/awt/Graphics2D;" not found ... 21 more Suppressed: java.lang.ClassNotFoundException: org.jfree.graphics2d.svg.SVGGraphics2D at java.lang.Class.classForName(Native Method) at java.lang.BootClassLoader.findClass(ClassLoader.java:781) at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) at java.lang.ClassLoader.loadClass(ClassLoader.java:504) ... 10 more Caused by: java.lang.NoClassDefFoundError: Class "Lorg/jfree/graphics2d/svg/SVGGraphics2D;" not found ... 14 more

ArgumentError：未知密钥::订单。有效键是：class_name，：Rails 4.2.6中的anonymous_class

2 个答案: