WIP add graph
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api/endpoints/list_members.py
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64
api/endpoints/list_members.py
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# endpoints/list_members.py
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from flask import Blueprint, request, jsonify
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from neo4j import GraphDatabase
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from app import get_driver, neo4j_logger
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bp = Blueprint('list_members', __name__)
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@bp.route('/list_members', methods=['GET'])
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def list_members():
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member_name = request.form.get('member_name')
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if not member_name:
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return jsonify({"error": "No member name provided"}), 400
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driver = get_driver()
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try:
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with driver.session() as session:
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result = session.run("""
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MATCH (m:Person {name: $memberName})-[*]-(n)
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RETURN m, n, collect(DISTINCT (m)-[r]->(n))
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""", memberName=member_name)
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data = {
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"nodes": [],
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"links": []
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}
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for record in result:
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node1 = record["m"]
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nodes = [record["n"]]
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# Add the first node
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if {"id": node1.id, "label": node1.labels[0], "name": node1.get("name")} not in data["nodes"]:
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data["nodes"].append({"id": node1.id, "label": node1.labels[0], "name": node1.get("name")})
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# Add other nodes and links
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for node2 in nodes:
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if {"id": node2.id, "label": node2.labels[0], "name": node2.get("name")} not in data["nodes"]:
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data["nodes"].append({"id": node2.id, "label": node2.labels[0], "name": node2.get("name")})
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for rel in record[2]:
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if {"source": rel.start_node.id, "target": rel.end_node.id, "type": rel.type} not in data["links"]:
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data["links"].append({"source": rel.start_node.id, "target": rel.end_node.id, "type": rel.type})
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return jsonify(data)
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except Exception as e:
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neo4j_logger.error(f"Error querying Neo4j: {e}")
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return jsonify({"error": str(e)}), 500
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@bp.route('/get_member_names', methods=['GET'])
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def get_member_names():
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driver = get_driver()
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try:
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with driver.session() as session:
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result = session.run("MATCH (p:Person) RETURN p.name AS name")
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members = [record['name'] for record in result]
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return jsonify(members)
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except Exception as e:
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neo4j_logger.error(f"Error fetching member names: {e}")
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return jsonify({"error": str(e)}), 500
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128
api/templates/render_member.html
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128
api/templates/render_member.html
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<!-- templates/render_member.html -->
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Member Network</title>
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<script src="https://d3js.org/d3.v7.min.js"></script>
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<style>
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.node {
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stroke: #fff;
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stroke-width: 1.5px;
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}
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.link {
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stroke: #999;
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stroke-opacity: 0.6;
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}
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</style>
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</head>
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<body>
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<h1>Member Network</h1>
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<select id="memberSelect">
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<!-- Options will be populated dynamically -->
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</select>
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<div id="graph"></div>
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<script>
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// Fetch member names from Neo4j
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fetch('/list_members/get_member_names')
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.then(response => response.json())
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.then(members => {
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const select = document.getElementById('memberSelect');
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members.forEach(member => {
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const option = document.createElement('option');
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option.value = member;
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option.text = member;
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select.appendChild(option);
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});
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});
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// Handle member selection
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document.getElementById('memberSelect').addEventListener('change', function() {
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console.log("Member selected:", this.value); // Log the selected member name
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const selectedMember = this.value;
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fetch(`/list_members/render_member?member_name=${encodeURIComponent(selectedMember)}`, {
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method: 'GET',
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})
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.then(response => response.json())
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.then(data => {
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console.log("Graph data received:", data); // Log the graph data
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renderGraph(data);
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})
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.catch(error => {
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console.error("Error fetching graph data:", error); // Log any errors
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});
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});
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// Render D3 network graph
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function renderGraph(data) {
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const width = 800;
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const height = 600;
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const svg = d3.select("#graph")
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.selectAll("svg") // Remove existing SVG elements first
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.remove()
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.append("svg")
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.attr("width", width)
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.attr("height", height);
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const simulation = d3.forceSimulation(data.nodes)
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.force("link", d3.forceLink(data.links).id(d => d.id))
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.force("charge", d3.forceManyBody().strength(-500))
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.force("center", d3.forceCenter(width / 2, height / 2));
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const link = svg.append("g")
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.attr("class", "links")
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.selectAll("line")
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.data(data.links)
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.enter().append("line")
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.attr("stroke-width", 2);
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const node = svg.append("g")
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.attr("class", "nodes")
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.selectAll("circle")
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.data(data.nodes)
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.enter().append("circle")
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.attr("r", 5)
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.attr("fill", d => d.label === 'Person' ? 'steelblue' : 'orange')
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.call(d3.drag()
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.on("start", dragstarted)
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.on("drag", dragged)
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.on("end", dragended));
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node.append("title")
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.text(d => `${d.name} (${d.label})`);
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simulation.on("tick", () => {
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link
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.attr("x1", d => d.source.x)
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.attr("y1", d => d.source.y)
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.attr("x2", d => d.target.x)
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.attr("y2", d => d.target.y);
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node
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.attr("cx", d => d.x)
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.attr("cy", d => d.y);
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});
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function dragstarted(event, d) {
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if (!event.active) simulation.alphaTarget(0.3).restart();
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d.fx = d.x;
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d.fy = d.y;
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}
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function dragged(event, d) {
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d.fx = event.x;
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d.fy = event.y;
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}
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function dragended(event, d) {
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if (!event.active) simulation.alphaTarget(0);
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d.fx = null;
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d.fy = null;
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}
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}
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</script>
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</body>
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</html>
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