Node.js 水线将现有数据库迁移到不带帆的水线模型

我正在尝试为现有数据库创建一个模型。我不用帆。只有waterline单机版。我已将连接设置为安全迁移。然而，waterline仍在尝试创建一个已经存在于我的现有数据库中的表。如果我把tableName改成一个新名称，它就可以正常工作。问题似乎是当我尝试使用现有表中的现有数据，然后为其创建水线模型时

我相信这是一个bug，因为migrate-safe根本不应该尝试创建一个表，对吗

我使用的是没有帆的水线

水线的配置如下：

 Error (E_UNKNOWN) :: Encountered an unexpected error
: Trying to define a collection (external_resource) which already exists.

顺便说一下，使用sails-postgresql。“帆船postgresql”：“^0.11.4”

我的一个假设是，我的模型定义与我的postgresql模型不完全匹配。我试过这么做，但也许我错过了一些小东西。它在水线代码中的何处检查model==模式定义？也许如果我知道的话，我可以找到为什么这是试图做一个创造

航海用户3年。数十亿公司的主要生产级缺陷：(

提前谢谢

更多信息：该表的sql如下所示

```
models = [];
fs.readdirSync(HOMEDIR + '/lib/models/waterline').forEach(function(file) {
  models.push(require(HOMEDIR + '/lib/models/waterline/' + file));
});

module.exports = {
  init: function(next) {
    models.forEach(function(model) {
      orm.loadCollection(model);
    });

    orm.initialize(config, function(err, models) {
      if (err) throw err;
      global.models = models.collections;
      global.connections = models.connections;
      next();
    });
  }
};


//And this in my config
localhost: {
      migrate: 'safe',
      adapter: 'postgres',
      database: 'intellinote',
      host: 'localhost',
      user: 'postgres',
      password: '',
      port: 5432
    }
``` 

我的模型是：

```
DROP TABLE IF EXISTS "intellinotedb"."external_resource";
CREATE TABLE "intellinotedb"."external_resource" (
    "id" int8 NOT NULL DEFAULT nextval('external_resource_id_seq'::regclass),
    "external_id" varchar(2000) NOT NULL COLLATE "default",
    "version_id" varchar(2000) COLLATE "default",
    "url" varchar(5000) COLLATE "default",
    "name" varchar(4000) COLLATE "default",
    "size" int8,
    "creator" varchar(50) NOT NULL COLLATE "default",
    "created_at" timestamp(6) NOT NULL DEFAULT now(),
    "modified_at" timestamp(6) NULL,
    "project_id" int8 NOT NULL,
    "note_id" int8,
    "type" varchar(50) NOT NULL COLLATE "default",
    "is_public" bool NOT NULL DEFAULT false,
    "state" varchar(100) NOT NULL DEFAULT 'ACTIVE'::character varying COLLATE "default",
    "mime_type" text COLLATE "default",
    "internal_type" text COLLATE "default",
    "is_template" bool NOT NULL,
    "has_filled_data" bool NOT NULL
)
WITH (OIDS=FALSE);
ALTER TABLE "intellinotedb"."external_resource" OWNER TO "intellinote";

-- ----------------------------
--  Primary key structure for table external_resource
-- ----------------------------
ALTER TABLE "intellinotedb"."external_resource" ADD PRIMARY KEY ("id") NOT DEFERRABLE INITIALLY IMMEDIATE;

-- ----------------------------
--  Uniques structure for table external_resource
-- ----------------------------
ALTER TABLE "intellinotedb"."external_resource" ADD CONSTRAINT "external_resource_note_id_key" UNIQUE ("note_id") NOT DEFERRABLE INITIALLY IMMEDIATE;

-- ----------------------------
--  Foreign keys structure for table external_resource
-- ----------------------------
ALTER TABLE "intellinotedb"."external_resource" ADD CONSTRAINT "external_resource_note_id_fkey" FOREIGN KEY ("note_id") REFERENCES "intellinotedb"."note" ("id") ON UPDATE NO ACTION ON DELETE CASCADE NOT DEFERRABLE INITIALLY IMMEDIATE;
ALTER TABLE "intellinotedb"."external_resource" ADD CONSTRAINT "external_resource_project_id_fkey" FOREIGN KEY ("project_id") REFERENCES "intellinotedb"."project" ("id") ON UPDATE NO ACTION ON DELETE NO ACTION NOT DEFERRABLE INITIALLY IMMEDIATE;
```

---

迁移功能需要在每个模型上，而不是在连接上。根据此线程：

```
Waterline = require('waterline');

module.exports = Waterline.Collection.extend({
  tableName: 'external_resource',
  meta: {
    schemaName: process.env.WATERLINE_SCHEMA || 'intellinotedb'
  },
  connection: process.env.WATERLINE_DB || 'localhost',
  attributes: {
    id: {
      type: 'integer',
      autoIncrement: true,
      primaryKey: true,
      unique: true,
      size: 8
    },
    external_id: {
      type: 'string',
      required: true,
      size: 2000
    },
    version_id: {
      type: 'string',
      size: 2000
    },
    url: {
      type: 'string',
      required: true,
      size: 5000
    },
    name: {
      type: 'string',
      required: true,
      size: 4000
    },
    size: {
      type: 'integer',
      required: true,
      size: 8
    },
    creator: {
      type: 'string',
      required: true,
      size: 50
    },
    createdAt: {
      type: 'datetime',
      columnName: 'created_at'
    },
    updatedAt: {
      type: 'datetime',
      columnName: 'modified_at'
    },
    project_id: {
      type: 'integer',
      required: true
    },
    note_id: {
      type: 'integer',
      required: true,
      size: 8
    },
    type: {
      type: 'string',
      defaultsTo: 'FILE',
      required: true,
      size: 50
    },
    is_public: {
      type: 'boolean',
      defaultsTo: true,
      required: true
    },
    state: {
      type: 'string',
      enum: ['ACTIVE', 'DELETED'],
      defaultsTo: 'ACTIVE',
      required: true,
      size: 100
    },
    mime_type: {
      type: 'string',
      required: true
    },
    internal_type: {
      type: 'string',
      defaultsTo: 'REGULAR',
      required: true
    },
    is_template: {
      type: 'boolean',
      defaultsTo: false,
      required: false
    },
    has_filled_data: {
      type: 'boolean',
      defaultsTo: false,
      required: false
    }
  }
});

```