我有以下表格
产品表
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js canvas - panorama fisheye demo</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
background-color: rgb(200,200,200);
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
color: #ffffff;
padding: 5px;
font-family:Monospace;
font-size:13px;
font-weight: bold;
text-align:center;
}
a {
color: #ffffff;
}
</style>
</head>
<body>
<div id="container"></div>
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - panorama fisheye demo. cubemap by <a href="http://www.zfight.com/" target="_blank">Jochum Skoglund</a>. (mousewheel: change fov)</div>
<script src="../build/three.js"></script>
<script src="js/renderers/Projector.js"></script>
<script src="js/renderers/CanvasRenderer.js"></script>
<script>
var camera, scene, renderer;
var texture_placeholder,
isUserInteracting = false,
onMouseDownMouseX = 0, onMouseDownMouseY = 0,
lon = 90, onMouseDownLon = 0,
lat = 0, onMouseDownLat = 0,
phi = 0, theta = 0,
target = new THREE.Vector3();
init();
animate();
function init() {
var container, mesh;
container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 );
scene = new THREE.Scene();
texture_placeholder = document.createElement( 'canvas' );
texture_placeholder.width = 128;
texture_placeholder.height = 128;
var context = texture_placeholder.getContext( '2d' );
context.fillStyle = 'rgb( 200, 200, 200 )';
context.fillRect( 0, 0, texture_placeholder.width, texture_placeholder.height );
var materials = [
loadTexture( 'textures/cube/skybox/px.jpg' ), // right
loadTexture( 'textures/cube/skybox/nx.jpg' ), // left
loadTexture( 'textures/cube/skybox/py.jpg' ), // top
loadTexture( 'textures/cube/skybox/ny.jpg' ), // bottom
loadTexture( 'textures/cube/skybox/pz.jpg' ), // back
loadTexture( 'textures/cube/skybox/nz.jpg' ) // front
];
mesh = new THREE.Mesh( new THREE.BoxGeometry( 300, 300, 300, 7, 7, 7 ), new THREE.MultiMaterial( materials ) );
mesh.scale.x = - 1;
scene.add( mesh );
for ( var i = 0, l = mesh.geometry.vertices.length; i < l; i ++ ) {
var vertex = mesh.geometry.vertices[ i ];
vertex.normalize();
vertex.multiplyScalar( 550 );
}
var particleMaterial = new THREE.MeshBasicMaterial();
particleMaterial.map = THREE.ImageUtils.loadTexture ('');
particleMaterial.side = THREE.DoubleSide;
var itmArr = []
var loader = new THREE.JSONLoader();
loader.load('models/json/skull.json', function (geometry) {
for (var i = 0; i < 20; i++) {
var mesh = new THREE.Mesh(geometry, particleMaterial);
mesh.position.z = (Math.random()-Math.random())*100;
mesh.position.x = (Math.random()-Math.random())*100;
mesh.position.y = (Math.random()-Math.random())*100;
mesh.dir = (Math.random()-Math.random())*.01;
scene.add(mesh);
itmArr.push(mesh);
}
});
renderer = new THREE.CanvasRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
document.addEventListener( 'wheel', onDocumentMouseWheel, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function loadTexture( path ) {
var texture = new THREE.Texture( texture_placeholder );
var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } );
var image = new Image();
image.onload = function () {
texture.image = this;
texture.needsUpdate = true;
};
image.src = path;
return material;
}
function onDocumentMouseDown( event ) {
event.preventDefault();
isUserInteracting = true;
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
function onDocumentMouseMove( event ) {
if ( isUserInteracting === true ) {
lon = ( onPointerDownPointerX - event.clientX ) * 0.1 + onPointerDownLon;
lat = ( event.clientY - onPointerDownPointerY ) * 0.1 + onPointerDownLat;
}
}
function onDocumentMouseUp( event ) {
isUserInteracting = false;
}
function onDocumentMouseWheel( event ) {
camera.fov += event.deltaY * 0.05;
camera.updateProjectionMatrix();
}
function onDocumentTouchStart( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
onPointerDownPointerX = event.touches[ 0 ].pageX;
onPointerDownPointerY = event.touches[ 0 ].pageY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
lon = ( onPointerDownPointerX - event.touches[0].pageX ) * 0.1 + onPointerDownLon;
lat = ( event.touches[0].pageY - onPointerDownPointerY ) * 0.1 + onPointerDownLat;
}
}
function animate() {
requestAnimationFrame( animate );
update();
}
function update() {
if ( isUserInteracting === false ) {
lon += 0.1;
}
lat = Math.max( - 85, Math.min( 85, lat ) );
phi = THREE.Math.degToRad( 90 - lat );
theta = THREE.Math.degToRad( lon );
target.x = 500 * Math.sin( phi ) * Math.cos( theta );
target.y = 500 * Math.cos( phi );
target.z = 500 * Math.sin( phi ) * Math.sin( theta );
camera.position.copy( target ).negate();
camera.lookAt( target );
renderer.render( scene, camera );
}
</script>
</body>
</html>
与
有很多关系推荐产品表
product_id
name
desc
我想要完成的是能够在我的视图中访问建议的产品ID名称。
产品控制器
id
product_id
suggested_product_id
Quantity
required (boolean)
我知道问题出现在＆＃34; recommendedproducts.product＆＃34;我不确定如何为eager load指定密钥（suggested_product_id）是product_id。
答案 0 :(得分：1)
您应该在Product模型中定义以下关系：
public function suggestedProducts()
{
return $this->belongsToMany(Product::class, 'suggestedproducts', 'product_id', 'suggested_product_id')
->withPivot(['quantity', 'required']);
}
这将允许您通过执行以下操作将所有相关产品作为Eloquent模型获取：
$product = Product::with('suggestedProducts')->find($id);
$product->suggestedProducts; // This accesses the suggested products
要访问每个推荐产品的名称，只需执行以下操作：
foreach ($product->suggestedProducts as $suggestedProduct)
echo $suggestedProduct->name;
要访问数据透视表中的数据，您必须使用以下内容：
foreach ($product->suggestedProducts as $suggestedProduct)
echo $suggestedProduct->pivot->quantity;