How do I get json data with retrhinkdb - node.js

Question

(I'm not good eng.)
I use a group to include dates. I want to get the information out in a row. What do i need to do
.group(r.row('time_create').dayOfWeek())
json export
[
{
group: 1,
reduction: [
{
detail: "no",
id: "37751c10-97ea-4a3a-b2c9-3e8b39383b79",
order_id: "15",
status: "Not_Delivery",
time_create: "2018-09-23T15:25:13.141Z"
}
]
}
]
i want change data json to
{
"date":
{
"Sun": [
{
detail: "no",
order_id: "15",
status: "Not_Delivery",
time_create: "2018-09-28 15:25:13"
}
]
}
}
Do i have to give the information out as i want.

Answer 1

Looks like you tried but didn't manage to transform the data from your previous question. ;)
Here is a proposition, this is not the only way of doing it.
First, it seems you want to remove the id field. You may do that in your ReQL using without:
.group(r.row('time_create').dayOfWeek()).without('id')
(You may apply without('id') before group, it should work the same, see this for more details.)
Then, to transform the result array (let's call it queryResult) into an object (let's call it output):
// prepare the skeleton of the output
let output = {
date: {}
};
// walk the result, filling the output in the process
queryResult.forEach((groupData) => {
let key = groupData.group;
if (!output[key]) {
output[key] = [];
}
output.date[key].push(...groupData.reduction);
})
Now you almost have your desired structure in output, the only thing is that day keys are still numbers and not a short day name. In my opinion, this should be handled by the front-end, since you may want to have different languages implemented for your front-end. But anyway, the idea is always the same: having a translation table that maps Rethink's day numbers with human-readable day names:
const translationTable = {
1: 'Mon',
2: 'Tue',
// ...
7: 'Sun'
};
Now if you do that in your front-end, you just replace the data's keys on the fly, when displaying is needed (or retrieve the key from the day name, depending on how you display stuff). Otherwise, if you go for a back-end implementation (which, again, is clearly not the best solution), you can change one line in the code above (assuming you declared translationTable already):
let key = groupData.group;
// becomes
let key = translationTable[groupData.group];
Feel free to ask in comments if there's something you don't understand!