我已经按照文档中给出的 node.js 实现了相同的要求，并且工作正常。
在这里，我正在复制我的整个代码。希望对您有所帮助。
代码
/*
I have used async.water model to create the setting of the index and then searching data as per given parameter. few function is custom so no need to bother about that. read each line patently.
*/
try {
var self = this;
var post = req.body;
var user_id = post.user_id;
var created_mode = post.user_mode == 'requester' ? 'provider' : 'requester';
var kword = post.kword;
var geo = post.geo_loc;
var aroundLatLng = post.aroundLatLng;
var aroundRadius = !cmnFn.empty(post.radious) ? post.radious : 4500;
var hitsPerPage = !cmnFn.empty(post.hitsPerPage) ? post.hitsPerPage : 20;
var offset = !cmnFn.empty(post.offset) ? post.offset : 0;
var length = !cmnFn.empty(post.length) ? post.length : 50;
var budget_from = !cmnFn.empty(post.budget_from) ? post.budget_from : 0;
var budget_to = !cmnFn.empty(post.budget_to) ? post.budget_to : 0;
var day_preference = !cmnFn.empty(post.day_preference) ? post.day_preference : '';
var time_preference = !cmnFn.empty(post.time_preference) ? post.time_preference : '';
var start_date = !cmnFn.empty(post.start_date) ? post.start_date : '';
job_index 是在 Algolia 上创建的索引
var job_index = algClient.initIndex('jobs');
var cond = {};
如果您使用的是构面和过滤器，那么您需要使用过滤器键来执行您的条件，就像您在 sql 中使用 where clouse 所做的一样
cond.filters = 'created_mode:"' + created_mode + '" AND (NOT user_id:"' + user_id + '")';
// Query which need to be search
if (!cmnFn.empty(kword)) {
cond.query = !cmnFn.empty(post.kword) ? post.kword : '';
}
if ((!cmnFn.empty(budget_from) && !cmnFn.empty(budget_to)) && budget_from > 0) {
cond.filters += ' AND min_charge: ' + budget_from + ' TO ' + budget_to;
}
if (!cmnFn.empty(day_preference)) {
cond.filters += ' AND day_preference:"' + day_preference + '"';
}
if (!cmnFn.empty(time_preference)) {
cond.filters += ' AND time_preference:"' + time_preference + '"';
}
if (!cmnFn.empty(start_date) && (new Date(start_date)).getTime() > 0) {
cond.filters += ' AND start_date:"' + start_date + '"';
}
我在这里设置 aroundLatLng 以获取距离最近的数据
/*
Do not fogot one thing, before using geo search, your records must have _geoloc key having following format
"_geoloc": {
"lat": 40.639751,
"lng": -73.778925
}
*/
// Around geo search by given lat lng
if (!cmnFn.empty(aroundLatLng) && !cmnFn.empty(aroundLatLng.lat)) {
cond.aroundLatLng = aroundLatLng.lat + ', ' + aroundLatLng.lng;
if (!cmnFn.empty(aroundRadius) && cond.aroundRadius > 0) {
cond.aroundRadius = aroundRadius;
}
}
// total number of searched record
if (!cmnFn.empty(hitsPerPage)) {
cond.hitsPerPage = hitsPerPage;
}
// Record starting position
if (!cmnFn.empty(offset)) {
cond.offset = offset;
}
// Page Limitation
if (!cmnFn.empty(length)) {
cond.length = length;
}
// Don't show attributesToHighlight in result set
cond.attributesToHighlight = false;
/*
restrictSearchableAttributes: List of object key, where to search in given list defined in searchableAttributes
*/
cond.restrictSearchableAttributes = [
'user_id',
'title',
'description',
'_geoloc'
];
/*
It will return raning info of result when search come under geo search
Following output will return
"_rankingInfo": {
"nbTypos": 0,
"firstMatchedWord": 0,
"proximityDistance": 0,
"userScore": 31,
"geoDistance": 9, // Calculated distance between data geolocation given in _geoloc and search criteria in aroundLatLng
"geoPrecision": 1,
"nbExactWords": 0,
"words": 1,
"filters": 0,
"matchedGeoLocation": {
"lat": 28.5503,
"lng": 77.2501,
"distance": 9
}
}
*/
cond.getRankingInfo = true;
async.waterfall([
function (callback) {
job_index.setSettings({
'attributesForFaceting': ['user_id', 'created_mode', 'min_charge', 'day_preference', 'time_preference', 'start_date'],
/*
searchableAttributes: List of object key , where to search
eg: ['title', 'description']
Like in sql: Where title='your searched text' AND description='your searched text'
_geoloc is reserved keyword of algolia which will used to search geo location
*/
searchableAttributes: [
'title',
'description',
'user_id',
'_geoloc'
],
/*
attributesToRetrieve: Here you can specify list of key name which you want to retrive
eg: ['name','address','age']
Like in sql: Select name, address, age
*/
attributesToRetrieve: [
'*'
]
}).then(() => {
return callback(null, 'success');
});
}
], function (err, results) {
if (err) {
console.log('error: ' + err);
}
job_index.search(cond).then(results => {
if (results.nbHits > 0) {
var rows = new Array();
for (i in results.hits) {
var row = {};
var item = results.hits[i];
var user_info = {};
user_info = item.user_info;
// Get distance and calculate
if (!cmnFn.empty(item._rankingInfo)) {
item.distance = cmnFn.meterToKM(item._rankingInfo['geoDistance']);
} else {
let loc = {
geoLoc_1: { latitude: aroundLatLng.lat, longitude: aroundLatLng.lng },
geoLoc_2: { latitude: item._geoloc.lat, longitude: item._geoloc.lng }
}
cmnFn.getDistance(loc, function (distance) {
item.distance = distance
})
}
/* self.isFav({ user_id: item.user_id, job_id: item.job_id }), function (err, flag) {
item.is_favorite = flag;
}; */
self.isFav({ user_id: item.user_id, job_id: item.job_id }).then(function (flag) {
item.is_favorite = flag;
}, function (err) {
item.is_favorite = false;
});
if (cmnFn.empty(item.currency)) {
item.currency = "₹";
}
//Delete few key from object which does not need to send in response
delete item['user_info'];
delete item['objectID'];
delete item['_geoloc'];
delete item['_rankingInfo'];
row.job_info = item;
row.user_info = user_info;
rows.push(row);
}
info = { status: 1, message: util.format(lang.TOTAL_RECORD_FOUND, results.nbHits), data: rows };
cmnFn.showMsg(res, info);
} else {
info = { status: 0, message: lang.RECORD_NOT_FOUND, data: null };
cmnFn.showMsg(res, info);
}
}).catch(err => {
console.log(err);
info = { status: 0, message: lang.RECORD_NOT_FOUND, data: null };
cmnFn.showMsg(res, info);
});
//res.end('' + JSON.stringify(results));
});
} catch (error) {
info = { status: 0, message: lang.RECORD_NOT_FOUND, data: null };
cmnFn.showMsg(res, info);
}