Package 'shinyChatR'

Title: R Shiny Chat Module
Description: Provides an easy-to-use module for adding a chat to a Shiny app. Allows users to send messages and view messages from other users. Messages can be stored in a database or a .rds file.
Authors: Julian Schmocker [aut, cre, cph], Ivo Kwee [aut]
Maintainer: Julian Schmocker <[email protected]>
License: GPL (>= 3)
Version: 1.2.0
Built: 2026-05-15 06:26:42 UTC
Source: https://github.com/julianschmocker/shinychatr

Help Index

A chat module for Shiny apps - server

Description

Creates the server logic for the chat module, which handles adding new messages to the database or RDS file, and retrieving messages to display

Usage

chat_server(
  id,
  chat_user,
  db_connection = NULL,
  db_table_name = "chat_data",
  rds_path = NULL,
  csv_path = NULL,
  invalidateDSMillis = 1000,
  pretty = TRUE,
  nlast = 100
)

Arguments

id

The id of the module.
chat_user

The user name that should be displayed next to the message.
db_connection

A database connection object, created using the DBI package. If provided, the chat messages will be stored in a database table.
db_table_name

he name of the database table to use for storing the chat messages. If db_connection is provided, this parameter is required.
rds_path

The path to an RDS file to use for storing the chat messages. If provided, the chat messages will be stored in an RDS file.
csv_path

The path to an csv file to use for storing the chat messages. If provided, the chat messages will be stored in an csv file.
invalidateDSMillis

The milliseconds to wait before the data source is read again. The default is 1 second.
pretty

Logical that determines if the date should be displayed in a pretty format
nlast

The number of last messages to be read in and displayed

Value

the reactive values chat_rv with all the chat information

A chat module for Shiny apps - UI

Description

Creates the user interface for the chat module, which includes a chat message display area, a text input field for entering new messages, and a send button.

Usage

chat_ui(id, ui_title = "", height = "300px", width = "100%")

Arguments

id

The id of the module
ui_title

The title of the chat area.
height

The height of the chat display area. Default is 300px.
width

The width of the chat display area.

CSVConnection R6 Class

Description

CSVConnection R6 Class

CSVConnection R6 Class

Details

An R6 class representing a connection to a CSV file for the chat module.

Value

The full dataset

Save a message to data source

Public fields

csv_path

The path to the CSV file.

nlast

The number of messages to be read in and displayed.

Initialize the R6 Object

Methods

Public methods

Method new()

Usage
CSVConnection$new(csv_path, nlast = NULL)
Arguments
csv_path

The path to the csv file.

nlast

The number of messages to be read-in.

Method get_data()

Reads the full dataset

Usage
CSVConnection$get_data()

Method insert_message()

Usage
CSVConnection$insert_message(message, user, time)
Arguments
message

The message to be stores

user

The user who entered the message

time

The time when message was submitted

Method clone()

The objects of this class are cloneable with this method.

Usage
CSVConnection$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

DBConnection R6 Class

Description

DBConnection R6 Class

DBConnection R6 Class

Details

An R6 class representing a connection to a database for the chat module.

Value

The full dataset

Save a message to data source

Public fields

connection

A database connection object, created using a package such as RSQLite.

table

The table that contains the chat information.

Initialize the R6 Object

Methods

Public methods

Method new()

Usage
DBConnection$new(connection, table = "chat_data")
Arguments
connection

DB connection

table

Table name

Method get_data()

Reads the full dataset

Usage
DBConnection$get_data()

Method insert_message()

Usage
DBConnection$insert_message(message, user, time)
Arguments
message

The message to be stores

user

The user who entered the message

time

The time when message was submitted

Method clone()

The objects of this class are cloneable with this method.

Usage
DBConnection$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

RDSConnection R6 Class

Description

RDSConnection R6 Class

RDSConnection R6 Class

Details

An R6 class representing a connection to a rds file for the chat module.

Value

The full dataset

Save a message to data source

Public fields

rds_path

The path to the rds file.

Initialize the R6 Object

Methods

Public methods

Method new()

Usage
RDSConnection$new(rds_path)
Arguments
rds_path

The path to the rds file.

Method get_data()

Reads the full dataset

Usage
RDSConnection$get_data()

Method insert_message()

Usage
RDSConnection$insert_message(message, user, time)
Arguments
message

The message to be stores

user

The user who entered the message

time

The time when message was submitted

Method clone()

The objects of this class are cloneable with this method.

Usage
RDSConnection$clone(deep = FALSE)
Arguments
deep

Whether to make a deep clone.

Render the messages for the chat

Description

Render the messages for the chat

Usage

render_msg_divs(texts, users, act_user)

Arguments

texts

a character vector with the texts
users

a character vector with the users
act_user

a character with the current user (that is using the app)

Value

The HTML code containing the chat messages

Render the messages for the chat

Description

Render the messages for the chat

Usage

render_msg_divs2(texts, users, act_user, time, pretty = TRUE)

Arguments

texts

a character vector with the texts
users

a character vector with the users
act_user

a character with the current user (that is using the app)
time

a datetime object
pretty

a logical that indicates if it should simplify the date

Value

The HTML code containing the chat messages

A function to update the chat textInput

Description

Updates the value of the chat textInput

Usage

updateChatTextInput(session = getDefaultReactiveDomain(), id, value)

Arguments

session

The shiny session.
id

The id of the module.
value

The new value that should be shown in the chat textInput.