Import Real-Time OpenWeatherMap Data via ODBC in ColdFusion to Build Applications
Adobe ColdFusion is a web and mobile application development platform. It uses its own scripting language, ColdFusion Markup Language (CFML), to create data-driven websites as well as generate remote services, such as REST. When ColdFusion is paired with the CData API Driver for ODBC, you can link your ColdFusion web and mobile applications to operational OpenWeatherMap data. This allows for your applications to be more robust and complete. This article details how to use the ODBC driver to create a table populated with OpenWeatherMap data from within a ColdFusion markup file.
To follow along with this tutorial, you need to install the CData API Driver for ODBC and Adobe ColdFusion.
Configuring the Connection
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 process. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.
Using API Key Authentication
To obtain an API key, sign up for a free account at https://openweathermap.org/api and navigate to the API keys section of your dashboard. Copy your API key for use in the connection configuration.
After setting the following connection properties, you are ready to connect:
- AuthScheme: Set this to APIKey.
- APIKey: Set this to your OpenWeatherMap API key.
Adding a Data Source and Creating a Table
After creating a DSN, follow the steps below to add a new data source, test our connection to it, create a ColdFusion markup file, and, finally, import OpenWeatherMap Data and display it in a table in ColdFusion:
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From the ColdFusion administrator interface, choose Data & Services.
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Here, click "Add New Data Source". The data source name can be any name, provided it conforms to the ColdFusion
variable naming conventions. For our ODBC driver, choose "ODBC Socket", then click the "Add" button.
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From the ODBC DSN Dropdown menu select CData OpenWeatherMap Sys. Under the Advanced Settings section, leave the
Connection String blank. Note that any properties specified in this input field will override the ones specified in the
DSN Configuration.
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Now, test the connection by pressing the check mark to the left of the CDataOpenWeatherMapODBC data source you just created.
When the data source reports an "OK" status, it is ready for use.
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Next, create a new ColdFusion Markup file (.cfm) and place it in the wwwroot directory ("C:\ColdFusion2021\cfusion\wwwroot")
for ColdFusion.
The following code queries the data source:
<cfquery name="OpenWeatherMapQuery" dataSource="CDataOpenWeatherMapODBC"> SELECT * FROM AccumulatedPrecipitation </cfquery>And a CFTable can be used to quickly output the table in HTML:<cftable query = "OpenWeatherMapQuery" border = "1" colHeaders colSpacing = "2" headerLines = "2" HTMLTable maxRows = "500" startRow = "1"> <cfcol header="<b></b>" align="Left" width=2 text=""/> <cfcol header="<b></b>" align="Left" width=15 text=""/> ... </cftable>Full code, including the HTML portion is available below:<html> <head><title>CData Software | OpenWeatherMap AccumulatedPrecipitation Table Demo </title></head> <body> <cfoutput>#ucase("OpenWeatherMap AccumulatedPrecipitation Table Demo")#</cfoutput> <cfquery name="OpenWeatherMapQuery" dataSource="CDataOpenWeatherMapODBC"> SELECT * FROM AccumulatedPrecipitation </cfquery> <cftable query = "OpenWeatherMapQuery" border = "1" colHeaders colSpacing = "2" headerLines = "2" HTMLTable maxRows = "500" startRow = "1"> <cfcol header="<b></b>" align="Left" width=2 text=""/> <cfcol header="<b></b>" align="Left" width=15 text=""/> ... </cftable> </body> </html> -
Finally, run the code in a browser. It produces a table populated with OpenWeatherMap data!
As a note, the CData ODBC Drivers also support parameterized queries using the cfqueryparam element. For example:
SELECT * FROM Account WHERE name =
Get Started Today
Download a free, 30-day trial of the CData ODBC Driver for OpenWeatherMap and start building OpenWeatherMap-connected applications with Adobe ColdFusion. Reach out to our Support Team if you have any questions.