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JavaScript example for using CommandFusion iViewer to process data returned from a HTTP Request to a Z-Wave MiCasaVerde Vera Lite system
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| var myJSON, baseURL = "http://192.168.1.90:3480/data_request?id=lu_status2&DataVersion=1&DeviceNum="; | |
| function requestData(deviceNum) { | |
| CF.request(baseURL + deviceNum, function(status, headers, body) { | |
| if (status == 200) { | |
| // OK response received, now grab the JSON string from body and turn it into an object | |
| myJSON = JSON.parse(body); | |
| // Now assign one of the known state variables to a serial join (if it will always be at a certain index in the state array) | |
| CF.setJoin("s100", myJSON["Device_Num_"+deviceNum].states[1].value); | |
| // Or lookup a variable by name from a specific device name if multiple devices are returned | |
| CF.setJoin("s101", getDeviceVariable("Device_Num_"+deviceNum,"LoadLevelStatus")); | |
| // Or lookup a variable by name on its own if you don't care what device it is coming from | |
| CF.setJoin("s102", getVariable("LoadLevelStatus")); | |
| } | |
| }); | |
| } | |
| // Get the value of a variable from a specific device | |
| function getDeviceVariable(deviceName, variableName) { | |
| // First check that the device name exists | |
| if (!myJSON.hasOwnProperty(deviceName)) { | |
| CF.log("Device name could not be found: " + deviceName); | |
| return; | |
| } | |
| // Get the number of state variables in the device | |
| var i = 0, n = myJSON[deviceName].states.length; | |
| // Loop through all the state variables | |
| for (; i < n; i++) { | |
| // Find the variable name that matches the one requested | |
| if (myJSON[deviceName].states[i].variable == variableName) { | |
| // Send the value of the variable back to the caller | |
| return myJSON[deviceName].states[i].variable; | |
| } | |
| } | |
| // If we get to here, the variable was not found in any of the devices. | |
| // Do some error logging and send back an empty string as the value | |
| CF.log("State variable not found: " + variableName); | |
| return ""; | |
| } | |
| // Get the value of a variable from the first device that contains it | |
| function getVariable(variableName) { | |
| // Loop through all device objects in the returned data (eg. Device_Num_3) | |
| for (var device in myJSON) { | |
| // Get the number of state variables in the device | |
| var i = 0, n = myJSON[device].states.length; | |
| // Loop through all the state variables | |
| for (; i < n; i++) { | |
| // Find the variable name that matches the one requested | |
| if (myJSON[device].states[i].variable == variableName) { | |
| // Send the value of the variable back to the caller | |
| return myJSON[device].states[i].variable; | |
| } | |
| } | |
| } | |
| // If we get to here, the variable was not found in any of the devices. | |
| // Do some error logging and send back null value | |
| CF.log("State variable not found: " + variableName); | |
| return; | |
| } |
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