Create method chain before object exists
1
Let's say I'm using knex to run queries against an SQL database. I chain a few methods to build the query.
For example:
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex.select("*")
.from("books")
.where("author", "=", "José Saramago")
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(() => {
knex.destroy();
})
Now, my question is:
Is there a way to store the method chain before the knex object is created and call it later when it is created?
Something like this:
const methodChain = <<<
.select("*"),
.from("books"),
.where("author", "=", "José Saramago")
>>>
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex
.methodChain()
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
javascript method-chaining
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
add a comment |
1
Let's say I'm using knex to run queries against an SQL database. I chain a few methods to build the query.
For example:
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex.select("*")
.from("books")
.where("author", "=", "José Saramago")
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(() => {
knex.destroy();
})
Now, my question is:
Is there a way to store the method chain before the knex object is created and call it later when it is created?
Something like this:
const methodChain = <<<
.select("*"),
.from("books"),
.where("author", "=", "José Saramago")
>>>
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex
.methodChain()
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
javascript method-chaining
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
add a comment |
1
1
1
Let's say I'm using knex to run queries against an SQL database. I chain a few methods to build the query.
For example:
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex.select("*")
.from("books")
.where("author", "=", "José Saramago")
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(() => {
knex.destroy();
})
Now, my question is:
Is there a way to store the method chain before the knex object is created and call it later when it is created?
Something like this:
const methodChain = <<<
.select("*"),
.from("books"),
.where("author", "=", "José Saramago")
>>>
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex
.methodChain()
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
javascript method-chaining
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
Let's say I'm using knex to run queries against an SQL database. I chain a few methods to build the query.
For example:
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex.select("*")
.from("books")
.where("author", "=", "José Saramago")
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(() => {
knex.destroy();
})
Now, my question is:
Is there a way to store the method chain before the knex object is created and call it later when it is created?
Something like this:
const methodChain = <<<
.select("*"),
.from("books"),
.where("author", "=", "José Saramago")
>>>
const sqlConfig = require('./sql.config');
var knex = require('knex')(sqlConfig);
knex
.methodChain()
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
javascript method-chaining
javascript method-chaining
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
asked Nov 14 '18 at 18:52
Edgar Ramírez MondragónEdgar Ramírez Mondragón
1,5512821
1,5512821
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
2
You could create a function that accepts the initial parameter in the chain:
function methodChain(in) {
return in.select("*")
.from("books")
.where("author", "=", "José Saramago");
}
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
This worked by removing those commas insidemethodChain. I'm sure you copied from my question, my bad. Thanks!
– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
add a comment |
2
Sure.
const methodChain = (x) => x
.select("*"),
.from("books"),
.where("author", "=", "José Saramago");
then later
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
You could create a function that accepts the initial parameter in the chain:
function methodChain(in) {
return in.select("*")
.from("books")
.where("author", "=", "José Saramago");
}
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
This worked by removing those commas insidemethodChain. I'm sure you copied from my question, my bad. Thanks!
– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
add a comment |
2
You could create a function that accepts the initial parameter in the chain:
function methodChain(in) {
return in.select("*")
.from("books")
.where("author", "=", "José Saramago");
}
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
This worked by removing those commas insidemethodChain. I'm sure you copied from my question, my bad. Thanks!
– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
add a comment |
2
2
2
You could create a function that accepts the initial parameter in the chain:
function methodChain(in) {
return in.select("*")
.from("books")
.where("author", "=", "José Saramago");
}
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
You could create a function that accepts the initial parameter in the chain:
function methodChain(in) {
return in.select("*")
.from("books")
.where("author", "=", "José Saramago");
}
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
edited Nov 14 '18 at 19:01
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
answered Nov 14 '18 at 18:55
MTCosterMTCoster
3,80922141
3,80922141
This worked by removing those commas insidemethodChain. I'm sure you copied from my question, my bad. Thanks!
– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
add a comment |
This worked by removing those commas insidemethodChain. I'm sure you copied from my question, my bad. Thanks!
– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
This worked by removing those commas inside
methodChain. I'm sure you copied from my question, my bad. Thanks!– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
This worked by removing those commas inside
methodChain. I'm sure you copied from my question, my bad. Thanks!– Edgar Ramírez Mondragón
Nov 14 '18 at 18:59
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
@EdgarR.Mondragón You’re right, I missed that! Glad it works for you, and I’ve removed the extraneous commas now.
– MTCoster
Nov 14 '18 at 19:01
add a comment |
2
Sure.
const methodChain = (x) => x
.select("*"),
.from("books"),
.where("author", "=", "José Saramago");
then later
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
add a comment |
2
Sure.
const methodChain = (x) => x
.select("*"),
.from("books"),
.where("author", "=", "José Saramago");
then later
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
add a comment |
2
2
2
Sure.
const methodChain = (x) => x
.select("*"),
.from("books"),
.where("author", "=", "José Saramago");
then later
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
Sure.
const methodChain = (x) => x
.select("*"),
.from("books"),
.where("author", "=", "José Saramago");
then later
methodChain(knex)
.then((rows) => {
console.log(rows);
})
.catch((err) => {
console.log(err);
})
.finally(function() {
knex.destroy();
})
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
answered Nov 14 '18 at 18:55
Mike SamuelMike Samuel
93.5k23171214
93.5k23171214
add a comment |
add a comment |
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