labelselectfield: The server function of the 'labelselectfield' module

In pinin4fjords/shinyngs: Shiny apps for NGS data

The server function of the labelselectfield module

Description

This module provides an input which allows filtering on the basis of data in the metadata slot of an ExploratorySummarizedExperiment. It will only be called by other modules requiring that input.

Usage

labelselectfield(
  input,
  output,
  session,
  eselist,
  getExperiment = NULL,
  labels_from_all_experiments = FALSE,
  url_field = "label",
  max_items = 1,
  field_selection = FALSE,
  id_selection = FALSE,
  getNonEmptyRows = NULL,
  list_input = FALSE
)

Arguments

input	Input object
output	Output object
session	Session object
eselist	ExploratorySummarizedExperimentList object containing ExploratorySummarizedExperiment objects
getExperiment	Reactive supplying an ExploratorySummarizedExperiment
labels_from_all_experiments	Derive valid labels from all experiments?
url_field	Parameter to extract from the URL to set the value of the select field
max_items	Maximum number of metadata values that can be selected
field_selection	Allow selection of the meta field to use (TRUE), or use labels (or row ids if the label field is not set)?
id_selection	Allow users to pick specific ID from those that relate to the specified label? (default: FALSE)
getNonEmptyRows	Optional reactive providing non empty matrix rows
list_input	Boolean: will input be a list of values?

Details

Where metadata is present, the user can select which field to select on, and the value of that field (populated conditionall on field selction). If specified, checkboxes are provided to allow selection of specific row IDs.

A selectizeInput is used for performance reasons, providing an autocomplete field for selecting from a list that could stretch to thousands of entries. This would be difficult to do client-side using a standard select field.

Examples

callModule(labelselectfield, "myid", eselist)

pinin4fjords/shinyngs documentation built on Jan. 18, 2025, 7:09 p.m.