水線，嘗試創建一對多關聯時出錯

Question

我有這些模型：

// Material.js

module.exports = {
attributes: {

    name: {
        type: 'string',
        required: true
    },
    source_info: {
        type: 'string',
        required: true
    },
    category: { model: 'category_mat' }
}
};

和：

// Category_Mat.js

module.exports = {
attributes: {
    name: {
      type: 'string',
      required: true
    },
    material:{
        collection: 'material',
        via: 'category'
    }
},
};

但是當我運行應用程序時，我收到此錯誤：

/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/waterline-schema/lib/waterline-schema/foreignKeys.js:82
throw new Error('Trying to access a collection ' + collection + ' that is 
      ^

Error: Trying to access a collection category_mat that is not defined.

at ForeignKeys.findPrimaryKey (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/waterline-schema/lib/waterline-schema/foreignKeys.js:82:11)
at ForeignKeys.replaceKeys (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/waterline-schema/lib/waterline-schema/foreignKeys.js:53:27)
at new ForeignKeys (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/waterline-schema/lib/waterline-schema/foreignKeys.js:30:10)
at new module.exports (/usr/local/lib/node_modules/sails/node_modules/waterline/node_modules/waterline-schema/lib/waterline-schema.js:30:17)
at Waterline.initialize (/usr/local/lib/node_modules/sails/node_modules/waterline/lib/waterline.js:106:17)
at buildORM (/usr/local/lib/node_modules/sails/lib/hooks/orm/build-orm.js:48:15)
at Array.async.auto.instantiatedCollections [as 1] (/usr/local/lib/node_modules/sails/lib/hooks/orm/index.js:191:11)
at listener (/usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:465:46)
at /usr/local/lib/node_modules/sails/node_modules/async/lib/async.js:419:17
at Array.forEach (native)

我使用此文檔作為參考： http ： //sailsjs.org/#/documentation/concepts/ORM/Associations/OnetoMany.html

所以我不知道我錯過了什么，或者是否有我必須做的配置...任何幫助？

Answer 1

也許是因為Material.js上使用的“category-mat”沒有在任何地方定義...試試

// Category_Mat.js

module.exports = {
   identity: 'category_mat',
   attributes: {
      name: {
          type: 'string',
          required: true
      },
      material:{
          collection: 'material',
          via: 'category'
      }
    },
};

如果這有效，唯一的副作用是即使您將config / globals.js / models設置為“true”，您也無法使用“Category_Mat”訪問控制器中的模型。 您將不得不使用“sails.models.category_mat”或“category_mat”。