![]() The next step would be to figure out what you need to send to MQTT to get the device to change state. You only want/need one broker connection String HVACStatus "Hvac mode" The items would look like depending on you broker name. Note I put in Mapping as per json string supplied. Properties.Status", commandTopic = "SOMETHING", On="ON", Off="OFF" ] Browser Support The numbers in the table specify the first browser version that fully supports the method. The JSON.parse () method can optionally transform the result with a function. ![]() The string has to be written in JSON format. It converts JSON array string to JavaScript array. Description The JSON.parse () method parses a string and returns a JavaScript object. Properties.Temperature", commandTopic ="SOMETHING" ] When we perform JSON.parse on a JSON string derived from an array, it converts it to a JavaScript array. Type number : temperature "Set Temperature". How to convert JSON string to array of JSON objects using JavaScript 3. Properties.Status", commandTopic = "SOMETHING" ] What is difference between JSON.parse() and JSON.stringify() Methods in JavaScript 2. Its an example of what you want maybe not the solution as you asked how to do it in a suggestion is how I would do it in the first place if the OP question was different. Then you can just do another rule with the data coming in you just go to know the difference between update and command rule "Device 3 status changes" Syntax: JSON. Json data contains: 'problems': '/problems/22', '/problems/31', Table has column like: CREATE TABLE X ( problems TEXT. Val Device_3_Type = transform("JSONPATH", = 'Device_3')].Properties.Type", Incoming_) The JSON.parse () method in JavaScript is used to parse a JSON string which is written in a JSON format and returns a JavaScript object. how to parse json array into postgresql array type Ask Question Asked today Modified today Viewed 3 times 0 Arrays seem really simple in PostgreSQL, but I am having trouble with JSON parsing into an array column type. Val Device_3_Status = transform("JSONPATH", = 'Device_3')].Properties.Status", Incoming_) Val Device_2_Type = transform("JSONPATH", = 'Device_2')].Properties.Type", Incoming_) The only instance where a piece of JSON text represents a different value from the same JavaScript expression is when dealing with the 'proto' key see Object literal syntax vs. Val Device_2_Status = transform("JSONPATH", = 'Device_2')].Properties.Status", Incoming_) JSON.parse () parses a JSON string according to the JSON grammar, then evaluates the string as if it's a JavaScript expression. Val Device_1_Type = transform("JSONPATH", = 'Device_1')].Properties.Type", Incoming_) Val Device_1_Temperature = transform("JSONPATH", = 'Device_1')].Properties.Temperature", Incoming_) Val Device_1_Status = transform("JSONPATH", = 'Device_1')].Properties.Status", Incoming_) Something like rule "Transform json message to devices" You probably already figured it out but you just ask for specific peace of data you want.
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