ffc-grants-common-functionality

Package containing common functionality for ffc-grants projects

Installing the plugin

npm install ffc-grants-common-functionality

How to use

This package contains several common functions that can be called and used in your ffc-grants repo

Common Regex

In ffc-grants, there are a lot of different regex used. Some of these are fairly common, while others needed very specific requirements.

To use the common regex, import the regex object from this package.

const { regex } = require('ffc-grants-common-functionality')

Then, call the requested regex from the regex module. For example, to use the CHARS_MIN_10 regex, use the following code:

regex.CHARS_MIN_10

List of Counties

When users enter details, they ar required to select a county from a dropdown. These counties are stored in a list, which can be found in this package.

To use the list of counties provided, import the counties list from this package.

const { counties } = require('ffc-grants-common-functionality')

Then, call the LIST_COUNTIES array from counties.

counties.LIST_COUNTIES

getYarValue and setYarValue

These two functions are by far the most used within the ffc-grants applications, as they are able to store all of the users answers during their application.

To use either of these functions, import session from this package

const { session } = require('ffc-grants-common-funcitonality')

Then call whichever function is needed from this module.

getYarValue requires 2 parameters:

• The request
• The yarKey to retrieve

session.getYarValue(request, 'yarKey')

setYarValue requires 3 parameters:

• The request
• The yarKey to set
• The value to set to the yarKey

session.setYarValue(request, 'yarKey', 'test string')

getOptions and setOptionsLabel

These two functions are used in the ffc-grants application to format page answers, whetehr in the form of a list due to being a multi-input page or as an individual answer in various different forms (text, tel, email etc).

To use either of these funcitons, first import answerOptions from the package

const { answerOptions } = require('ffc-grants-common-funcitonality')

Then, call whichever function is needed from this module

getOptions requires 4 parameters:

• data from the yarKey
• the question object
• details on conditional text (this can be left blank)
• The request

answerOptions.getOptions(data, question, conditional, request)

setOptionsLabel requires 3 parameters:

• data from the yarKey
• the answers list
• conditional text (this can be left blank)

answerOptions.setOptionsLabel(data, answers, conditional)

Utils functions

There are several utils functions used in ffc-grants applications. These functions are primarily used to check user provided answers stored in yarKeys with the answers provided on the page.

In the application, these are used in several places, such as in the pageGuard, when creating the page model for nunjuks and when checking user entered values before formatting the email

To use functions from utils, first import utils from the package

const { utils } = require('ffc-grants-common-functionality')

Then, call whichever function is needed from this module

notUniqueSelection is used to check if a provided answer is not unique. It uses 2 parameters:

• A list of the questions answers
• The users selected option

utils.notUniqueSelection(answers, userSelectedAnswer)

uniqueSelection checks if a provided answer is unique. It uses 2 parameters:

• A list of the question answers
• The users selected option

utils.uniqueSelection(answers, userSelectedAnswer)

getQuestionByKey retrieves a question based on the question key. It uses 2 parameters:

• The question key to look for
• The list of question objects

utils.getQuestionByKey(questionKey, arrayOfQuestionObjects)

getQuestionAnswer retrieves a question answer based on the provided question key and subsequent answer key. It uses 3 parameters:

• The question key to look for
• The answer key for the specific answer to look for
• The list of question objects

utils.getQuestionAnswer(questionKey, answerKey, arrayOfQuestionObjects)

getAnswersKeys retrieves answers keys based on the provided question key and answers values. It uses 3 parameters:

• The question key to look for
• The answers values for the specific answers to look for
• The list of question objects

utils.getAnswersKeys(questionKey, answersValues, arrayOfQuestionObjects)

allAnswersSelected returns a list of all of the answers the user selected on a page. It uses 4 parameters:

• The request (for retrieving the users answers)
• The question key to look for
• A list of the answer keys in the question
• The list of question objects

utils.allAnswersSelected(request, questionKey, arrayOfAnswerKeys, arrayOfQuestionObjects)

someAnswersSelected returns a list containing some of the answers the user selected on a page. It uses 4 parameters:

• The request (for retrieving the users answers)
• The question key to look for
• A list of the answer keys in the question
• The list of question objects

utils.someAnswersSelected(request, questionKey, arrayOfAnswerKeys, arrayOfQuestionObjects)

Error Helpers

The error helpers are a collection of several mini validation checks that are carried out throughout the ffc-grants pages. These validation checks are sent from the page to check user inputs are correctly entered, as well as making sure that the user has sleected at least one option on each required field.

In the application, these functions are used when checking every single entered value, and every single sleected value.

To use these functions, first import errorHelpers from the package

const { errorHelpers } = require('ffc-grants-common-functionality')

Then, call whichever funciton is needed from this module.

validateAnswerField validates the requested answer field from the provided page. Some fo the types of validation are NOT_EMPTY, MIN_MAX and REGEX (which thests the answer against the provided regex). This function uses 5 parameters:

• The provided answer or list of answers to check
• The type of validation required
• Further question details (such as the min/max values, regex to be tested against etc)
• The full payload from the Post request response (which contains the users entered answers on the current page to be validated)
• The list of question objects

errorHelpers.validateAnswerField(value, validationType, details, payload, ALL_QUESTIONS)

checkInputError calls the validateAnswerField function to check every bit of validation required for every field in a question. This function uses 5 parameters:

• The list of validation checks to run for the field/s
• A boolean to check if validation requires a second yarKey
• The full payload from the Post request response (which contains the users entered answers on the current page to be validated)
• The question yarKey
• The list of question objects

errorHelpers.checkInputError(validate, isConditionalAnswer, payload, yarKey, ALL_QUESTIONS)

Page Guard

The page guard is used in every application to make sure the user is not able to enter a url to access a page outside of the expected route, by checking if specific questions and answers have eben provided. This function also checks whether the application is decommissioned or currently live. If this function returns true, the user should be redirected to the start page

In the application, these functions are used whenever a new page is being loaded, whether it is through clicking the continue button, navigating using an entered url etc.

To use these functions, first import pageGuard from the package

const { pageGuard } = require('ffc-grants-common-functionality')

Then, call the guardPage function from this module.

guardPage runs the page guard checks. First, it checks for whether the service is decommissioned based on the serviceEndDate and serviceEndTime, or if the page to be accessed is the start page or login page (as these are accessible even if the service is decommissioned).

Then, if these checks are complete and return as false, the page guard checks whether the requested question has been answered correctly. If the required question has not been answered, or has been answered incorrectly based on the page guard requirements, the function returns true, meaning that the user should be redirected to the start page.

This function uses 6 parameters:

• The request
• The rules for the page guard. This can be either an array of yarKeys to check, or an object containing preValidationKeys (as an array), preValidationAnswer (as an array), preValidationRule (as a string referring) and preValidationUrls (as an array)
• The url of the start page
• The service end date
• The service end time
• The list of question objects

pageGuard.guardPage(request, guardData, startPageUrl, serviceEndDate, serviceEndTime, ALL_QUESTIONS)

Contributing to this project

If you have an idea you'd like to contribute please log an issue.

All contributions should be submitted via a pull request.

License

THIS INFORMATION IS LICENSED UNDER THE CONDITIONS OF THE OPEN GOVERNMENT LICENCE found at:

http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3

The following attribution statement MUST be cited in your products and applications when using this information.

Contains public sector information licensed under the Open Government license v3

About the license

The Open Government Licence (OGL) was developed by the Controller of Her Majesty's Stationery Office (HMSO) to enable information providers in the public sector to license the use and re-use of their information under a common open licence.

It is designed to encourage use and re-use of information freely and flexibly, with only a few conditions.