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ui5-best-practices-smart-controls

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Aktualisiert3. Juli 2026 um 08:25

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UI5/plugins-coding-agents

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SoftwareentwicklerInformatik- und Mathematikberufe·SOC 15-1252

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name

ui5-best-practices-smart-controls

description

UI5 smart controls best practices and authoritative development guidelines for OData V2 annotation-driven controls. Use when the user asks to "create a SmartField", "add a SmartForm", "implement SmartFilterBar", "create SmartChart", "add SmartLink navigation", "use SmartMultiInput", "smart control annotations", "OData V2 metadata-driven controls", "sap.ui.comp", "field control annotation", "value help annotations", "ValueList annotation", "smart form layout", "smart filter bar configuration", "chart annotations", "semantic object navigation", "smart link popover", "SmartField edit mode", "SmartField display mode", "SmartFilterBar liveMode", "SmartChart drill-down", "SmartMultiInput tokens", "SmartTable configuration", or is writing any UI5 freestyle application using OData V2 annotation-driven controls from sap.ui.comp. Covers: control selection, mandatory rules, common error patterns, annotation guidance, and per-control API reference for SmartField, SmartForm, SmartFilterBar, SmartChart, SmartLink, and SmartMultiInput. Keywords: sap.ui.comp, SmartField, SmartForm, SmartFilterBar, SmartChart, SmartLink, SmartMultiInput, SmartTable, FilterBar, sap.ui.comp.filterbar, ValueHelpDialog, sap.ui.comp.valuehelpdialog, FilterGroupItem, token selection, ranges, conditions tab, OData V2, annotations, UI.LineItem, UI.Chart, ValueList, FieldControl, SemanticObject, entitySet, ControlConfiguration, GroupConfiguration, textArrangement, value help, FilterProvider, initialise event, beforeRebindChart, navigationTargetsObtained

UI5 Smart Controls Best Practices

Apply these guidelines whenever generating, reviewing, or troubleshooting UI5 smart control code in freestyle applications using OData V2 services.

UI5 version baseline: SAPUI5 1.136+ LTS. All features mentioned are available from this version unless noted.

When to load each reference

Trigger	Load
Working on or planning a `sap.ui.comp.smartfield.SmartField`	`references/smart-field.md`
Working on or planning a `sap.ui.comp.smartform.SmartForm`	`references/smart-form.md`
Working on or planning a `sap.ui.comp.smartfilterbar.SmartFilterBar`	`references/smart-filter-bar.md`
Working on or planning a `sap.ui.comp.smartchart.SmartChart`	`references/smart-chart.md`
Working on or planning a `sap.ui.comp.navpopover.SmartLink`	`references/smart-link.md`
Working on or planning a `sap.ui.comp.smartmultiinput.SmartMultiInput`	`references/smart-multi-input.md`
Working on or planning a `sap.ui.comp.filterbar.FilterBar`	`references/filter-bar.md`
Working on or planning a `sap.ui.comp.valuehelpdialog.ValueHelpDialog`	`references/value-help-dialog.md`
Working on or planning a `sap.ui.comp.smarttable.SmartTable`	See `ui5-best-practices-tables` skill, `references/smart-table.md`

Load before producing any output. Do not work from memory.

Core Rules

Mandatory

Always specify entitySet on Smart controls or ensure the control inherits a binding context that resolves the entity type.
Use ControlConfiguration in XML for SmartFilterBar field overrides (control type, filter type, index). Only visible, label, and visibleInAdvancedArea can be changed at runtime.
Use the correct hierarchy: SmartForm > Group > GroupElement > SmartField. Never place SmartFields directly in a SmartForm.
Wait for the initialise event before programmatically accessing inner controls (e.g., getInnerControl(), getChart()).
Use sap.ui.model.odata.type.* types in bindings alongside OData V2 models. Never use sap.ui.model.type.* with OData V2.
Set ariaLabelledBy on SmartFilterBar and SmartChart referencing a visible title for accessibility.
Use check() on SmartForm for client-side mandatory field validation before submitting data.
Use get_api_reference MCP tool to verify control APIs. Use run_ui5_linter to validate code.

Prohibitions

Do not use Smart controls with OData V4 services. Use MDC controls (sap.ui.mdc) instead.
Do not set custom formatters on SmartField value property. SmartField manages its own rendering based on metadata. Use annotations to influence behavior.
Do not use composite binding syntax (parts: [...]) on SmartField. It manages its own composite bindings for unit/currency fields.
Do not call getChart() synchronously during initialization. Use the initialise event or getChartAsync().
Do not directly modify inner controls of SmartChart or SmartTable (e.g., the inner sap.chart.Chart). Use the smart control's public API.
Do not hardcode field labels. Use sap:label or @Common.Label annotations in OData metadata.
Do not use inline styles or scripts in HTML (CSP compliance).
Do not use global access (sap.ui.comp.smartfield.SmartField). Use sap.ui.define or ES6 imports.

Selection Matrix

Control	Use when	Do not use when
`SmartField`	OData V2, single property display/edit, auto-rendering by Edm type and annotations	OData V4, JSON models, custom rendering required, composite/multi-property fields
`SmartForm`	OData V2, entity editing with multiple SmartFields, auto-labels from annotations	OData V4, complex custom layouts, non-OData data
`SmartFilterBar`	OData V2, annotation-driven filter UI, integration with SmartTable/SmartChart	OData V4 (use MDC FilterBar), JSON-only, purely custom filter logic
`SmartChart`	OData V2, annotation-driven chart visualization, drill-down, variant management	OData V4 (use MDC Chart), non-analytical data, custom chart JS
`SmartLink`	OData V2, semantic object navigation, cross-app navigation via FLP	OData V4 (use MDC Link), simple static links, no FLP available
`SmartMultiInput`	OData V2, multi-value entry with tokens, value help with ranges	OData V4, simple single-value input, JSON-only
`FilterBar`	Manual filter UI without OData annotations, inside ValueHelpDialog, custom filters	OData V2 with annotations (use SmartFilterBar), OData V4 (use MDC FilterBar)
`ValueHelpDialog`	Complex value selection with table + conditions tabs, token-based multi-select	Simple dropdowns, single-value selection, OData V4 (use MDC ValueHelp)

Common Errors

Symptom	Cause	Fix
SmartField renders as plain text in edit mode	Missing binding context or wrong `entitySet`	Verify `value="{PropertyName}"` and entity context resolution.
SmartField shows Input instead of DatePicker	Missing `sap:display-format="Date"` on property	Add annotation or use `controlType` in ControlConfiguration.
SmartForm labels missing	`sap:label` annotation not set in OData metadata	Add `sap:label` to property or set `label` on GroupElement.
SmartFilterBar type-ahead not working	Missing `ValueList` annotation with correct target path	Verify target: `{Namespace}.{EntityName}/{FieldName}`.
SmartFilterBar default values ignored	Setting ControlConfiguration dynamically after `initialise`	Set values statically in XML or use `setFilterData()` API.
SmartChart height is 0 / not visible	Container does not provide explicit height	Set height on parent container (e.g., `height="50vh"`).
SmartChart missing dimensions/measures	Wrong or missing `UI.Chart` annotation	Verify `MeasureAttributes` and `DimensionAttributes` in annotation.
SmartLink popover shows "No content available"	No navigation targets for semantic object in FLP	Verify FLP configuration and user authorizations.
SmartLink rendered as text (not clickable)	No `SemanticObject` annotation on property	Add `@Common.SemanticObject` annotation to OData property.
SmartMultiInput tokens not persisting	Missing ValueList or incorrect binding	Verify ValueList annotation and navigation property binding.

Performance & Accessibility

Anti-patterns to avoid

Requesting all value lists eagerly (use lazy loading; value lists load on-demand by default).
Using liveMode="true" on SmartFilterBar with expensive backend queries (causes rapid re-fetching).
Deep nesting of SmartForm groups (keep hierarchy flat: Form > Group > GroupElement).
Bypassing SmartChart API to modify inner chart directly (breaks personalization and variant management).
Not setting ignoredChartTypes when certain chart types are irrelevant (unnecessary UI options).

Accessibility checklist

Set ariaLabelledBy on SmartFilterBar referencing a visible title.
Set ariaLabelledBy on SmartChart referencing a visible title.
SmartForm automatically propagates labels to SmartFields via annotations.
Verify keyboard navigation works for SmartFilterBar "Adapt Filters" dialog.
Test SmartLink popover with screen reader (navigation targets must be announced).