如何为 ORM 设置动态数据源？

发布于 2024-11-16 19:36:53 字数 534 浏览 7 评论 0原文

Coldfusion application.cfc 中的 ORM 设置在其他任何内容运行（onapplicationstart 等）之前运行。那么如何在 application.cfc 中设置动态数据源（ORM init 之前的代码）？我们可以在之后设置它，并将 ORM 重新指向动态数据源，但这要求硬编码数据源也必须有效。这充其量是脆弱的。

下面是一个示例：

<cfscript>
this.name = "someapp_#hash(cgi.http_host)#";
this.ormenabled = "true";
this.ormsettings = { cfclocation = "config/definitions", eventhandling = "true",datasource="STATICDATASOURCE" };
</cfscript>

如果未在 application.cfc 范围中指定，则会出现“未为当前应用程序配置 ORM”之类的错误。

我们需要能够从服务器上的文本文件获取数据源。

原文

ORM settings in Coldfusion application.cfc run before anything else runs (onapplicationstart, etc). So how do you set a dynamic datasource (code before the ORM init) in application.cfc? we can set it after and it re-points the ORM to a dynamic datasource, but that requires that the hardcoded datasource must be valid as well. This is tenuous at best.

Here is an example:

<cfscript>
this.name = "someapp_#hash(cgi.http_host)#";
this.ormenabled = "true";
this.ormsettings = { cfclocation = "config/definitions", eventhandling = "true",datasource="STATICDATASOURCE" };
</cfscript>

If it's not specified in application.cfc scope then you get errors like "ORM is not configured for the current application."

We need to be able to get the datasource from a text file on the server.

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海的爱人是光 2024-11-23 19:36:53

this.datasource="YourDatasourceName";

好吧，如果您想存储一个文件，在本例中我们将其称为“datasource.xml”，其中包括：

<dataSourceName>Name goes here</dataSourceName>

您可以使用以下命令读取它：

dataFile = fileRead("pathToFile/datasource.xml");
data = xmlParse(dataFile);
dataSourceName = data.dataSourceName.xmlText;

this.datasource=dataSourceName;

this.datasource="YourDatasourceName";

Well, if you wanted to store a file, for this example we'll call it "datasource.xml" consisting of:

<dataSourceName>Name goes here</dataSourceName>

You can read it in with:

dataFile = fileRead("pathToFile/datasource.xml");
data = xmlParse(dataFile);
dataSourceName = data.dataSourceName.xmlText;

this.datasource=dataSourceName;

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