rewiki-survey

Simple ReWiki Survey

About

Simple-rewiki-survey is a super simple way to ask your user questions. Give it some JSON with questions and some callbacks to draw the UI and Simple Survey handles all state management for you, runs the user through your questions, and pops answers out at the end.

Usage

See the ExampleApp for a demonstration of all the features.

Feed it JSON such as

const survey = [
    {
        questionType: 'Info',
        questionText: 'Welcome to the React Native Simple Survey Example app! Tap next to continue'
    },
    {
        questionType: 'TextInput',
        questionText: 'Simple Survey supports free form text input',
        questionId: 'favoriteColor',
        placeholderText: 'Tell me your favorite color!',
    },
    {
        questionType: 'NumericInput',
        questionText: 'It also supports numeric input. Enter your favorite number here!',
        questionId: 'favoriteNumber',
        placeholderText: '',
    },
    {
        questionType: 'SelectionGroup',
        questionText: 'Simple Survey also has multiple choice questions. What is your favorite pet?',
        questionId: 'favoritePet',
        options: [
            {
                optionText: 'Dogs',
                value: 'dog'
            },
            {
                optionText: 'Cats',
                value: 'cat'
            },
            {
                optionText: 'Ferrets',
                value: 'ferret'
            },
        ]
    },
    {
        questionType: 'MultipleSelectionGroup',
        questionText:
            'Select two or three of your favorite foods!',
        questionId: 'favoriteFoods',
        questionSettings: {
            maxMultiSelect: 3,
            minMultiSelect: 2,
        },
        options: [
            {
                optionText: 'Sticky rice dumplings',
                value: 'sticky rice dumplings'
            },
            {
                optionText: 'Pad Thai',
                value: 'pad thai'
            },
            {
                optionText: 'Steak and Eggs',
                value: 'steak and eggs'
            },
            {
                optionText: 'Tofu',
                value: 'tofu'
            },
            {
                optionText: 'Ice cream!',
                value: 'ice crem'
            },
            {
                optionText: 'Injera',
                value: 'injera'
            },
            {
                optionText: 'Tamales',
                value: 'tamales'
            }
        ]
    },
];

Then use the component like this:

<SimpleSurvey
    survey={survey}
    containerStyle={styles.surveyContainer}
    selectionGroupContainerStyle={styles.selectionGroupContainer}
    navButtonContainerStyle={{ flexDirection: 'row', justifyContent: 'space-around' }}
    renderPrevious={this.renderPreviousButton.bind(this)}
    renderNext={this.renderNextButton.bind(this)}
    renderFinished={this.renderFinishedButton.bind(this)}
    renderQuestionText={this.renderQuestionText}
    renderSelector={this.renderButton.bind(this)}
    onSurveyFinished={(answers) => this.onSurveyFinished(answers)}
    onAnswerSubmitted={(answer) => this.onAnswerSubmitted(answer)}
    renderTextInput={this.renderTextBox}
    renderNumericInput={this.renderNumericInput}
    renderInfo={this.renderInfoText}
/>

Ref Functions

Function	Description
getAnswers()	Returns JSON for all answers the user has submitted so far. defaultValue for questions the user has seen but not proceeded past will also be returned. Unanswered questions will not be present in the JSON. Info questions are filtered from the returned JSON.

Callbacks

The majority of callbacks will return a component that Simple Survey then renders for you. This means you completely customize how Simple Survey looks. You don't even have to use buttons for your UI, Simple Survey handles the state management and lets you render whatever you want.

onSurveyFinished and onAnswerSubmitted are the only callbacks that don't return a component.

Navigation Callbacks

The props renderPrevious, renderNext, renderFinished all have the same form.

Parameter	Type	Description
onPress	Callback (void)	Must be called when this component is activated (tapped, swiped, clicked, etc)
enabled	boolean	Indicates if this component should be enabled.

The onPress equivalent (feel free to have fun, so long as the user indicates something) has to call the onPress lambda that is passed in. At its most boring this looks like

const renderNext = (onPress, enabled) => {
  return(<Button
    color={GREEN}
    onPress={onPress}
    disabled={!enabled}
    backgroundColor={GREEN}
    title={'Next'}
  />);
}

enabled tells you if the button should be enabled or not.

renderQuestionText

Must returns a component. This is the text shown above above each question.

Parameter	Type	Description
questionText	string||object	Typically text of the question as specified in the JSON for this question. Since this is passed into your own rendering function, feel free to define an object in your JSON for more advanced scenarios.

Sample usage

const renderQuestionText = (questionText) => {
    return (<Text>{questionText}</Text>); 
}

renderSelector

Must return a component. This is the UI element that will be shown for each option of a SelectionGroup and MultipleSelectionGroup, Buttons, radio buttons, sliders, whatever you want, so long as onPress gets called when the user has selected something.

Variable	Type	Description
data	any	A complete copy of the 'value' field defined in the JSON object for this SelectionGroup. See example below.
index	number	Index of this option in the array of options that was passed to the SelectionGroup. Useful as key on your component.
isSelected	boolean	Indicates if the user has selected this option.
onPress	Callback (selection handler interface as defined in react-native-selection-group)	Must be called when the user has selected this component as their choice.

Sample usage

const renderSelector = (data, index, isSelected, onPress) => {
  return (<Button
      title={data.optionText}
      onPress={onPress}
      color={isSelected ? GREEN : PURPLE}
      key={`button_${index}`}
  />);
}

onSurveyFinished

Called after the user activates the component passed in to renderFinished

Parameter	Type	Description
answers	Array	Array of JSON values as described below.

This is passed a JSON array of the form

[
{questionId: string, value: any},
{questionId: string, value: any},
// ...
]

where value is the answer the user selected or entered. Selection Group is more flexible, value is the entirity of the object passed into option, meaning Selection Group questions can actually do some pretty fun stuff. An example of this

{ 
  questionId: "favoritePet", 
  value: { 
    optionText: "Dogs",
    value: "dog"
  }
}

Navigation to leave or close out SimpleSurvey should go here.

Info questions are automatically removed from the returned array, only questions that have non-null answers will be returned. Questions with an assigned defaultValue in the JSON that the user has only viewed will also be returned.

onQuestionAnswered

Called after the user activates the renderNext component.

Parameter	Type	Description
answers	string || object	See description below

answer is the user input for Numeric and Text inputs, it is the entire Option object as specified in your JSON for a SelectionGroup.

As an example, from the sample JSON up above, if the user selected Dogs, onQuestionAnswered would receive

{ 
  optionText: "Dogs",
  value: "dog"
}

renderTextInput

Must return a component. Renders input component for questions of type TextInput.

Parameter	Type	Description
onChange	Callback (string)	Must be called for every character input by the user
value	String	Current value of this field
placeHolder	String	Placeholder text as indicated in the JSON, will be null if not specified in the JSON
onBlur	Callback (void)	Function to be called when the text input field is blurred, used for auto-advancing, not needed if you are not enabling autoadvance.

Example:

const renderTextInput = (onChange, value, placeholder, onBlur) {
  return (<TextInput
    onChangeText={text => onChange(text)}
    value={value}
    placeholder={placeholder}
    onBlur={onBlur}
  />);
}

See the ExampleApp for a better styled, more functional, example.

renderNumericInput

Must return a component. Renders input component for questions of type NumericInput.

Parameter	Type	Description
onChange	Callback (string)	Must be called for every character input by the user
value	string	Current value of this field, empty string if the field is empty
placeholder	String	Placeholder text as indicated in the JSON, will be null if not specified in the JSON
onBlur	Callback (void)	Function to be called when the numeric input field is blurred, used for auto-advancing, not needed if you are not using autoadvance.

Example:

const renderNumericInput = (onChange, value, placeholder, onBlur) {
  return (<TextInput 
    style={styles.numericInput}
    onChangeText={text => { onChange(text); }}
    underlineColorAndroid={'white'}
    placeholderTextColor={'rgba(184,184,184,1)'}
    placeholder={placeHolder}
    value={String(value)}
    keyboardType={'numeric'}
    maxLength={3}
    onBlur={onBlur}
  />);
}

renderInfo

Must return a component. Renders text on questionType: 'Info' Screens.

Parameter	Description
infoText	String as passed in the JSON field questionText for questionType: "Info"

Example:

const renderInfoText = (infoText) {
  return (<Text style={styles.infoText}>{infoText}</Text>);
}

JSON Schema

(in Typescript)

survey : Array<Info|TextInput|NumericInput|SelectionGroup|MultipleSelectionGroup>

interface Info: {
    questionType: "Info",
    questionText: string || object
}

interface TextInput: {
    questionType: "TextInput",
    questionText: string || object,
    questionId: string,
    placeholderText?: string,
    defaultValue?: string
}

interface NumericInput: {
    questionType: "NumericInput",
    questionText: string || object,
    questionId: string,
    placeholderText?: string || number,
    defaultValue?: string || number
}

interface SelectionGroupOption: {
    optionText: string,
    value: any
}

interface SelectionGroup: {
    questionType: "SelectionGroup",
    questionText: string || object,
    questionId: string,
    questionSettings: {
        autoAdvance: boolean,
        allowDeselection: boolean,
        defaultSelection: number,
    },
    options: SelectionGroupOption[]
    
}

interface MultipleSelectionGroup: {
    questionType: "MultipleSelectionGroup",
    questionText: string || object,
    questionId: string,
    questionSettings: {
        autoAdvance: boolean,
        allowDeselection: boolean,
        maxMultiSelect: number,
        minMultiSelect?: number,
        defaultSelection: Array<number>,
    },
    options: SelectionGroupOption[]
}