Add labels under every bar of the grouped bar chart on D3 - d3.js

Question

I'm relatively new to D3 and trying to add labels to a grouped bar chart.. With below implementation, I'm only able to see them under one group instead of both.
Below is how the data looks in the db:
category,Exceed,Fully Meets,Partially Meets,Does not meet
business,10,20,30,30
leadership,15,5,30,50
Below is the code:
var chart1 = d3.select("#svgarea2"),
margin = { top: 70, right: 0, bottom: 30, left: 40 },
width = +chart1.attr("width") - margin.left - margin.right,
height = +chart1.attr("height") - margin.top - margin.bottom,
g = chart1.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
//chart background color
var bg = d3.select("g").append("svg")
// .attr("width", width + margin.right + margin.left)
.attr("width", 510 + "px")
// .attr("height", height + margin.top + margin.bottom);
.attr("height", 310 + "px");
bg.append("rect")
.attr("width", "100%")
.attr("height", "100%")
.attr("fill", "#f8f8ff");
bg.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
//scale chart
var x0 = d3.scaleBand()
.rangeRound([0, width])
.paddingInner(0.4);
var x1 = d3.scaleBand()
.padding(0.05);
var y = d3.scaleLinear()
.rangeRound([height, 0]);
var z = d3.scaleOrdinal() //d3.schemeCategory20
// .range(["#0000ff", "#dcdcdc", "#696969", "#00008b"]);
.range(["#00008b", "#696969", "#dcdcdc", "#0000ff"]);
var columns = ['category', 'Does Not Meet', 'Partially Meets', 'Fully Meets', 'Exceed'];
var keys = columns.slice(1);
var color = d3.scaleOrdinal()
.range(["#00008b", "#696969", "#dcdcdc", "#0000ff"]);
x0.domain(data.map(function (d) { return d.category; }));
x1.domain(keys).rangeRound([0, x0.bandwidth()]);
y.domain([0, 100]).nice();
g.append("g")
.selectAll("g")
.data(data)
.enter().append("g")
.attr("transform", function (d) { return "translate(" + x0(d.category) + ",0)"; })
.selectAll("rect")
.data(function (d) { return keys.map(function (key) { return { key: key, value: d[key] }; }); })
.enter().append("rect")
.attr("x", function (d) { return x1(d.key); })
.attr("y", function (d) {
return y(d.value);
})
.attr("width", x1.bandwidth() - 7)
.attr("height", function (d) { return height - y(d.value); })
.attr("fill", function (d) { return z(d.key); })
.on("mousemove", function(d){
tooltip
.style("left", d3.event.pageX - 50 + "px")
.style("top", d3.event.pageY - 70 + "px")
.style("display", "inline-block")
.html((d.key) + "<br>" + (d.value) + "%");
});
g.append("g")
.selectAll("g")
.data(data).enter()
.append("g")
.attr("transform", function (d) { return keys })
.attr("class", "axis")
.attr("transform", "translate(0," + height + ")")
.attr("x", function (d) { return x0(d.category); })
.call(d3.axisBottom(x1))
.selectAll("text")
.attr("y", 15)
.attr("x", 0)
.attr("dy", ".35em")
.attr("transform", "rotate(50)")
.style("text-anchor", "start");;
g.append("g")
.attr("class", "axis")
.call(d3.axisLeft(y).ticks(null, "s"))
.append("text")
.attr("x", 2)
.attr("y", y(y.ticks().pop()) - 5)
.attr("dy", "0.32em")
.attr("fill", "#000")
.attr("font-weight", "bold")
.attr("text-anchor", "start")
.text("Employees (%)");
//chart title
g.append("text")
.attr("x", (width / 2) + 30)
.attr("y", 1 - (margin.top / 2) + 20)
.attr("text-anchor", "middle")
.style("font-size", "16px")
.style("font-weight", "bold")
.style("text-decoration", "underline")
.attr("font-family", "sans-serif")
.text("Performance Distribution");
};
Any help is appreciated!

Answer 1

It will work if you create a g element for each barchart, and then add you axes, bars etc to each. See here for example:
http://blockbuilder.org/tomshanley/aa5471a3ecaf9e41283d68188aecf042
Relevant code:
var chart = g.append("g")
.selectAll("g")
.data(data)
.enter().append("g");
chart.attr("transform", function (d) { return "translate(" + x0(d.category) + ",0)"; })
.selectAll("rect")
.data(function (d) { return keys.map(function (key) { return { key: key, value: d[key] }; }); })
.enter().append("rect")
.attr("x", function (d) { return x1(d.key); })
.attr("y", function (d) {
return y(d.value);
})
.attr("width", x1.bandwidth() - 7)
.attr("height", function (d) { return height - y(d.value); })
.attr("fill", function (d) { return z(d.key); })
//APPEND AN AXIS TO THE CHART G'S
chart.append("g")
.attr("class", "axis")
.attr("transform", "translate(0," + height + ")")
.attr("x", function (d) { return x0(d.category); })
.call(d3.axisBottom(x1))
.selectAll("text")
.attr("y", 15)
.attr("x", 0)
.attr("dy", ".35em")
.attr("transform", "rotate(50)")
.style("text-anchor", "start");