I am currently designing a db schema to obtain an array like this one:
[{
"name": "Sprint 0",
"desc": "Analysis",
"values": [{
"from": "/Date(1320192000000)/",
"to": "/Date(1322401600000)/",
"label": "Design",
"customClass": "ganttGreen"
}]
},{
name: " ", //this is again Sprint 0 so make it empty not to display repetitive data
desc: "Scoping",
values: [{
from: "/Date(1322611200000)/",
to: "/Date(1323302400000)/",
label: "Scoping",
customClass: "ganttRed"
}]
},{
name: "Sprint 1",
desc: "Development",
values: [{
from: "/Date(1323802400000)/",
to: "/Date(1325685200000)/",
label: "Development",
customClass: "ganttGreen"
}]
},{
name: " ",
desc: "Showcasing",
values: [{
from: "/Date(1325685200000)/",
to: "/Date(1325695200000)/",
label: "Showcasing",
customClass: "ganttBlue"
}]
},{
name: "Sprint 2",
desc: "Development",
values: [{
from: "/Date(1326785200000)/",
to: "/Date(1325785200000)/",
label: "Development",
customClass: "ganttGreen"
}]
}]
It is a collection of tasks to be displayed. It is a reverse engineering exercise since I am using a plugin to display data and it expects this structure of data.
The data structure would be like that:
foreach “name” you will have multiple “desc” values and for each desc you can have multiples “values”
What would be the most efficient table(s) structure to obtain this doing as much as possible on mysql side? (I think that the part where I replace with empty the “name” value if it is the same as the previuous must be on PHP)
So far I have these tables
GANTT_PHASES
id nome progetto
---------------------------------------
1 Setup di progetto 1
2 Blueprint 1
3 Realizzazione 1
4 Test 1
5 Go Live 1
and this one
GANTT
id phaseID date_to date_from ordine descr label customClass progetto
------------------------------------------------------------------------------------------------------
1 1 2018-10-05 02:00:00 2018-10-03 02:00:00 1 pippo pippo1 ganttGreen 1
2 1 2018-10-05 02:00:00 2018-10-03 02:00:00 2 pluto pippo1 ganttGreen 1
the query:
SELECT nome, descr, label, customClass, date_from, date_to
FROM `gantt_fasi` LEFT JOIN gantt on gantt_fasi.id= gantt.phaseID
WHERE gantt_fasi.progetto=1
will produce the following output:
nome descr label customClass date_from date_to
--------------------------------------------------------------------------------------------
Setup di progetto pippo pippo1 ganttGreen 2018-10-03 02:00:00 2018-10-05 02:00:00
Setup di progetto pluto pippo1 ganttGreen 2018-10-03 02:00:00 2018-10-05 02:00:00
Blueprint NULL NULL NULL NULL NULL
Realizzazione NULL NULL NULL NULL NULL
Test NULL NULL NULL NULL NULL
Go Live NULL NULL NULL NULL NULL
and then I go down with PHP to create the array. Anything I can improve on this approach?
