Build a Simple VCL Application for WordPress データ

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData ODBC Driver for WordPress, you gain access to live WordPress データ within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to retrieve and update WordPress データ. This article will walk through connecting to WordPress and creating a simple VCL application with the Form Designer.

Create a Connection to WordPress データ

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

データに接続するには、Url を設定して認証を提供します。URL はワードプレスサイトに設定しなければなりません。そうしないと、サーバーが見つからない旨を示すエラーがスローされます。 例えば、あなたのサイトが'http://localhost/wp/wordpress' でホストされている場合、URL は'http://localhost' ではなく、'http://localhost/wp/wordpress' となるべきです。

詳細はヘルプドキュメントを参照してください。

You can then follow the steps below to use the Data Explorer to create a FireDAC connection to WordPress データ.

1. In a new VCL Forms application, expand the FireDAC node in the Data Explorer.
2. Right-click the ODBC Data Source node in the Data Explorer.
3. Click Add New Connection.
4. Enter a name for the connection.
5. In the FireDAC Connection Editor that appears, set the DataSource property to the name of the ODBC DSN for WordPress.

Create VCL Applications with Connectivity to WordPress データ

Follow the procedure below to start executing queries to WordPress データ from a simple VCL application that displays the results of a query in a grid.

1. Drop a TFDConnection component onto the form and set the following properties:

   • ConnectionDefName: Select the FireDAC connection to WordPress データ.
   • Connected: Select True from the menu and, in the dialog that appears, enter your credentials.

2. Drop a TFDQuery component onto the form and set the properties below:

   • Connection: Set this property to the TFDConnection component, if this component is not already specified.

   • SQL: Click the button in the SQL property and enter a query. For example:

     SELECT Id, Name FROM Categories
   • Active: Set this property to true.

3. Drop a TDataSource component onto the form and set the following property:

   • DataSet: In the menu for this property, select the name of the TFDQuery component.

4. Drop a TDBGrid control onto the form and set the following property:

   • DataSource: Select the name of the TDataSource.
5. Drop a TFDGUIxWaitCursor onto the form — this is required to avoid a run-time error.

You now have an executable application that displays the results of the SQL Query set in the TFDQuery object.

Related Articles

Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.

• DataBind Controls to WordPress データ in C++Builder
• DataBind Controls to WordPress データ in Delphi
• Viewing WordPress データ in RAD Studio Data Explorer