Overview

Design

Frontend

Fullstack

Create Website

Fetching Data Using http

Reading JSON Using `fastn`

get-data processor is used to get data from a JSON files in the package.

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
file: foo.json

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
file: foo.json

Lang:

ftd

This will read the key foo from foo.json and store it in the variable named foo.

Key

By default, the name of the variable or list where the data is being store is used as the key. You can overwrite the key using key attribute:

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
key: some-other-key-instead-of-foo
file: foo.json

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
key: some-other-key-instead-of-foo
file: foo.json

Lang:

ftd

Default Value

If the data is not found, we use the body as default value if body is available.

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data

"hello world"

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data

"hello world"

Lang:

ftd

The body must be valid json, compatible with the data type on which we are using the get-data processor.

Default Value in Caption For Primitive Types

For primitive types like integer, boolean, string etc, the default value can also be provided in the caption. E.g.

-- import: fastn/processors as pr

-- string foo: hello world
$processor$: pr.get-data

-- import: fastn/processors as pr

-- string foo: hello world
$processor$: pr.get-data

Lang:

ftd

Providing both body and caption when using get-data is an error.

Tutorial

We will be reading the data from JSON file and injecting the value to the caller of the processor (caller could be variable or component).

Creating `index.ftd`

We need to make two files i.e. one file should be index.ftd and another file should be foo.json

index.ftd

-- import: fastn/processors as pr

-- record person:
caption name:
integer age:
string gender:

-- person arpita:
$processor$: pr.get-data
file: foo.json

-- ftd.text: $foo.name
-- ftd.text: $foo.age
-- ftd.text: $foo.gender

-- import: fastn/processors as pr

-- record person:
caption name:
integer age:
string gender:

-- person arpita:
$processor$: pr.get-data
file: foo.json

-- ftd.text: $foo.name
-- ftd.text: $foo.age
-- ftd.text: $foo.gender

Lang:

ftd

NOTE: file must point to a valid json file with extension .json.

Creating `foo.json`

{
  "name": "arpita",
  "age": 15,
  "gender": "female"
}

{
  "name": "arpita",
  "age": 15,
  "gender": "female"
}

Lang:

json

Running

Run fastn serve and view 127.0.0.1:8000 (use whatever port reported by fastn serve), and you should see something like this:

arpita
15
female

arpita
15
female

Lang:

txt

Support `fastn`!

Enjoying fastn? Please consider giving us a star ⭐️ on GitHub to show your support!

⭐️

Getting Help

Have a question or need help?

Visit our GitHub Q&A discussion to get answers and subscribe to it to stay tuned.

Join our Discord channel and share your thoughts, suggestion, question etc.

Connect with our community!

💻️

Found an issue?

If you find some issue, please visit our GitHub issues to tell us about it.

Quick links:

Join us

We welcome you to join our Discord community today.

We are trying to create the language for human beings and we do not believe it would be possible without your support. We would love to hear from you.

Reading JSON Using `fastn`

get-data processor is used to get data from a JSON files in the package.

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
file: foo.json

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
file: foo.json

Lang:

ftd

This will read the key foo from foo.json and store it in the variable named foo.

Key

By default, the name of the variable or list where the data is being store is used as the key. You can overwrite the key using key attribute:

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
key: some-other-key-instead-of-foo
file: foo.json

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data
key: some-other-key-instead-of-foo
file: foo.json

Lang:

ftd

Default Value

If the data is not found, we use the body as default value if body is available.

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data

"hello world"

-- import: fastn/processors as pr

-- string foo:
$processor$: pr.get-data

"hello world"

Lang:

ftd

The body must be valid json, compatible with the data type on which we are using the get-data processor.

Default Value in Caption For Primitive Types

For primitive types like integer, boolean, string etc, the default value can also be provided in the caption. E.g.

-- import: fastn/processors as pr

-- string foo: hello world
$processor$: pr.get-data

-- import: fastn/processors as pr

-- string foo: hello world
$processor$: pr.get-data

Lang:

ftd

Providing both body and caption when using get-data is an error.

Tutorial

We will be reading the data from JSON file and injecting the value to the caller of the processor (caller could be variable or component).

Creating `index.ftd`

We need to make two files i.e. one file should be index.ftd and another file should be foo.json

index.ftd

-- import: fastn/processors as pr

-- record person:
caption name:
integer age:
string gender:

-- person arpita:
$processor$: pr.get-data
file: foo.json

-- ftd.text: $foo.name
-- ftd.text: $foo.age
-- ftd.text: $foo.gender

-- import: fastn/processors as pr

-- record person:
caption name:
integer age:
string gender:

-- person arpita:
$processor$: pr.get-data
file: foo.json

-- ftd.text: $foo.name
-- ftd.text: $foo.age
-- ftd.text: $foo.gender

Lang:

ftd

NOTE: file must point to a valid json file with extension .json.

Creating `foo.json`

{
  "name": "arpita",
  "age": 15,
  "gender": "female"
}

{
  "name": "arpita",
  "age": 15,
  "gender": "female"
}

Lang:

json

Running

Run fastn serve and view 127.0.0.1:8000 (use whatever port reported by fastn serve), and you should see something like this:

arpita
15
female

arpita
15
female

Lang:

txt

Support `fastn`!

Enjoying fastn? Please consider giving us a star ⭐️ on GitHub to show your support!

⭐️

Getting Help

Have a question or need help?

Visit our GitHub Q&A discussion to get answers and subscribe to it to stay tuned.

Join our Discord channel and share your thoughts, suggestion, question etc.

Connect with our community!

💻️

Found an issue?

If you find some issue, please visit our GitHub issues to tell us about it.

Quick links:

Join us

We welcome you to join our Discord community today.

We are trying to create the language for human beings and we do not believe it would be possible without your support. We would love to hear from you.

Reading JSON Using fastn

Key

Default Value

Default Value in Caption For Primitive Types

Tutorial

Creating index.ftd

Creating foo.json

Running

Support fastn!

Getting Help

Found an issue?

Quick links:

Join us

Reading JSON Using fastn

Key

Default Value

Default Value in Caption For Primitive Types

Tutorial

Creating index.ftd

Creating foo.json

Running

Support fastn!

Getting Help

Found an issue?

Quick links:

Join us

Reading JSON Using `fastn`

Creating `index.ftd`

Creating `foo.json`

Support `fastn`!

Reading JSON Using `fastn`

Creating `index.ftd`

Creating `foo.json`

Support `fastn`!