Hit the punchDB endpoint and retrieve all documents, then return the resulting value

Question

Hit the punchDB endpoint and retrieve all documents, then return the resulting value

As a newcomer to JavaScript and pouchDB, I am encountering difficulties in fetching data from pouchDB

This problem is common when trying to retrieve and process data

 db.allDocs({include_docs: true}).then(function (result) {
    console.log(result.rows);
 }));

However, my goal is to specifically return "result.rows"

var result = db.allDocs({include_docs: true}).then(function (result) {
    return result.rows;
}));

Alternatively, I could simplify the output by utilizing the allDocs function without using .then

var result= db.allDocs({include_docs: true});

Although this method results in a more complex output

I came across a helpful link

which explains the concept of return when working with .then, however, it did not solve the issue with allDocs

javascript angularjs pouchdb

Answer 1

Answer №1

It seems like you might be approaching this situation in the following way:

var data = db.allDocs({include_docs: true}).then(function (data) {
    return data.rows;
});

console.log(data); // Expecting to see rows displayed here

However, this method will not work as intended because data is actually a promise to retrieve the rows. The actual results will arrive at a later time asynchronously.

If you are performing this operation within a function or service, and you use return data, whoever consumes that function will still need to utilize .then. Here's an example to illustrate this concept:

function getRows(){
  var data = db.allDocs({include_docs: true}).then(function (data) {
        return data.rows;
  });

  return data;
}

getRows().then(function(rows){
   console.log(rows); // Shows the actual rows
})

Answer 2

It seems like you might be approaching this situation in the following way:

var data = db.allDocs({include_docs: true}).then(function (data) {
    return data.rows;
});

console.log(data); // Expecting to see rows displayed here

However, this method will not work as intended because data is actually a promise to retrieve the rows. The actual results will arrive at a later time asynchronously.

If you are performing this operation within a function or service, and you use return data, whoever consumes that function will still need to utilize .then. Here's an example to illustrate this concept:

function getRows(){
  var data = db.allDocs({include_docs: true}).then(function (data) {
        return data.rows;
  });

  return data;
}

getRows().then(function(rows){
   console.log(rows); // Shows the actual rows
})

Hit the punchDB endpoint and retrieve all documents, then return the resulting value

Answer №1

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