skip update columns with pg-promise

Question

I\'ve got an API up on node using pg-promise for Postgres, this works well but i\'m thinking about how to modify the PUT statement to handle NULLS in the input a little bett

Answer 1

Thank you @vitaly-t! faster and cleaner, always a good result :)

for reference, i've also included the insert statement using the helpers as described above as well.

    //firstly create a function that skips the nulls for strings
function str(column) {
    return {
        name: column,
        skip: c => c.value === null || c.value === undefined || !c.exists
    };
}

//now a function that skips nulls for integers, while parsing type
function int(column) {
    return {
        name: column,
        skip: c => c.value === null || c.value === undefined || !c.exists,
        init: c => +c.value
    };
}

//creating a column set for all updates
var usefulColumSet = new pgp.helpers.ColumnSet([
    str('string1'), str('string2'), str('string3'), str('string4'), str('string5'),
    str('string6'), int('integer1'), int('integer2'), int('integer3'),
    str('date1'), str('date2'), str('date3'), int('currency1'), int('currency2')
], {table: 'generic1'});

//*********************CREATE a single record*************************
function createRecord(req, res, next) {
    var insert = pgp.helpers.insert(req.body, usefulColumSet);

    db.none(insert)
        .then(function(){
            res.status(200)
                .json({
                    status: 'success',
                    message: 'Inserted one record successully'
                });
        })
        .catch(function(err){
            return next(err);
        });
}


//************************UPDATE a single record*************
function updateRecord(req, res, next) {
    var update = pgp.helpers.update(req.body, usefulColumSet) + ' WHERE id = ' + parseInt(req.params.id);

    db.none(update)
        .then(function() {
            res.status(200)
                .json({
                    status: 200,
                    message: 'updated a single record cleanly'
                });
        })
        .catch(function(err) {
            return next(err);
        });
}