MongoDB：如何重新格式化此代码以在名称字段上包括排序？

Question

How can I reformat this block in order to add sorting on the Name field?

   Router.route('/hospitals/search/:searchString')
      .get(function (req, res) {
        const searchString = decodeURIComponent(req.params.searchString)
        HospitalModel.find({
          $or: [
            {Name: {$regex: searchString, $options: 'i'}},
            {City: {$regex: searchString, $options: 'i'}}
          ]
        }, function (err, data) {
          const response = (err)
            ? {error: true, message: 'Server Error when querying hospitals collection.'}
            : {error: false, message: data}
          res.json(response)
        })
      })

I'm new to both mongo and API creation in general. The examples I've found don't really fit the way I've written this and I'm sort of lost at this point.

Answer 1

Try this code. Sorting can be done in different ways in mongoose.

Following are the examples for that

HospitalModel.find({}).sort('Name').exec(function(err, docs) { ... });
HospitalModel.find({}).sort({Name: 1}).exec(function(err, docs) { ... });
HospitalModel.find({}, null, {sort: {Name: 1}}, function(err, docs) { ... });
HospitalModel.find({}, null, {sort: [['Name', -1]]}, function(err, docs) { ... }); 

Generally what i follow is in this way. It will work for you too.

 Router.route('/hospitals/search/:searchString')
     .get(function(req, res) {
         const searchString = decodeURIComponent(req.params.searchString)
         HospitalModel.find({
             $or: [
                 { Name: { $regex: searchString, $options: 'i' } },
                 { City: { $regex: searchString, $options: 'i' } }
             ]
         }, null, { sort: { Name: 1 } }, function(err, data) {
             const response = (err) ? { error: true, message: 'Server Error when querying hospitals collection.' } : { error: false, message: data }
             res.json(response)
         })
     })

Answer 2

Try below code

       HospitalModel.find(
     $or: [{
       Name: {
         $regex: searchString,`
         $options: 'i'
       }
     }, {
       City: {
         $regex: searchString,
         $options: 'i'
       }
     }]
   ) .sort({
       Name: 1
     }).exec(function(err, data) {
       const response = (err) ? {
         error: true,
         message: 'Server Error when querying hospitals collection.'
       } : {
         error: false,
         message: data
       }

       return res.json(response);
     });