49 setObjectName( QStringLiteral(
"referenced/" ) +
mRelation.
name() );
72 for (
auto it = transactionGroups.constBegin(); it != transactionGroups.constEnd(); ++it )
89 setObjectName( QStringLiteral(
"referenced/" ) +
mRelation.
name() );
254 addedFeatureIds.insert( finalFeature.
id() );
267 const int index = fields.
indexOf( fieldPair.first );
268 linkAttributes.insert( index, editingFeature.attribute( fieldPair.second ) );
274 const int index = fields.
indexOf( fieldPair.first );
275 linkAttributes.insert( index, finalFeature.
attribute( fieldPair.second ) );
287 keyAttrs.insert( fields.
indexFromName( fieldPair.referencingField() ),
mFeatureList.first().attribute( fieldPair.referencedField() ) );
314 return addedFeatureIds;
348 QStringList deletedFeaturesPks;
359 QString linkingFeaturesRequestExpression;
360 if ( !deletedFeaturesPks.empty() )
367 int relatedLinkingFeaturesCount = 0;
370 relatedLinkingFeaturesCount++;
373 if ( deletedFeaturesPks.size() == 1 && relatedLinkingFeaturesCount > 1 )
375 QMessageBox messageBox( QMessageBox::Question, tr(
"Really delete entry?" ), tr(
"The entry on %1 is still linked to %2 features on %3. Do you want to delete it?" ).arg(
mNmRelation.
referencedLayer()->
name(), QLocale().toString( relatedLinkingFeaturesCount ),
mRelation.
referencedLayer()->
name() ), QMessageBox::NoButton,
this );
376 messageBox.addButton( QMessageBox::Cancel );
377 QAbstractButton *deleteButton = messageBox.addButton( tr(
"Delete" ), QMessageBox::AcceptRole );
380 if ( messageBox.clickedButton() != deleteButton )
383 else if ( deletedFeaturesPks.size() > 1 && relatedLinkingFeaturesCount > deletedFeaturesPks.size() )
385 QMessageBox messageBox( QMessageBox::Question, tr(
"Really delete entries?" ), tr(
"The %1 entries on %2 are still linked to %3 features on %4. Do you want to delete them?" ).arg( QLocale().toString( deletedFeaturesPks.size() ),
mNmRelation.
referencedLayer()->
name(), QLocale().toString( relatedLinkingFeaturesCount ),
mRelation.
referencedLayer()->
name() ), QMessageBox::NoButton,
this );
386 messageBox.addButton( QMessageBox::Cancel );
387 QAbstractButton *deleteButton = messageBox.addButton( tr(
"Delete" ), QMessageBox::AcceptRole );
390 if ( messageBox.clickedButton() != deleteButton )
403 QString childrenInfo;
404 int childrenCount = 0;
405 const auto infoContextLayers = infoContext.
layers();
409 childrenInfo += ( tr(
"%n feature(s) on layer \"%1\", ",
nullptr, infoContext.
duplicatedFeatures( chl ).size() ).arg( chl->name() ) );
413 const int res = QMessageBox::question(
this, tr(
"Delete at least %1 feature(s) on other layer(s)" ).arg( childrenCount ),
414 tr(
"Delete %1 feature(s) on layer \"%2\", %3 as well\nand all of its other descendants.\nDelete these features?" ).arg( fids.count() ).arg( layer->
name() ).arg( childrenInfo ),
415 QMessageBox::Yes | QMessageBox::No );
416 if ( res != QMessageBox::Yes )
425 if ( contextLayers.size() > 1 )
427 int deletedCount = 0;
428 QString feedbackMessage;
431 feedbackMessage += tr(
"%1 on layer %2. " ).arg( context.
handledFeatures( contextLayer ).size() ).arg( contextLayer->name() );
458 QgsLogger::warning( tr(
"For 1:n relations is not possible to link to multiple features" ) );
466 selectionDlg->setAttribute( Qt::WA_DeleteOnClose );
469 selectionDlg->setWindowTitle( tr(
"Link existing child features for parent %1 \"%2\"" ).arg(
mRelation.
referencedLayer()->
name(), displayString ) );
472 selectionDlg->show();
518 const int index = fields.
indexOf( fieldPair.first );
519 linkAttributes.insert( index, editFeature.attribute( fieldPair.second ) );
526 const int index = fields.
indexOf( fieldPair.first );
527 linkAttributes.insert( index, relatedFeature.
attribute( fieldPair.second ) );
541 const auto constNewFeatures = linkFeaturesList;
542 for (
const QgsFeature &f : constNewFeatures )
550 QgsLogger::warning( tr(
"For 1:n relations is not possible to link to multiple features" ) );
554 QMap<int, QVariant> keys;
559 const QVariant val =
mFeatureList.first().attribute( fieldPair.referencedField() );
560 keys.insert( idx, val );
584 QMapIterator<int, QVariant> it( keys );
585 while ( it.hasNext() )
612 .setFilterFids( fids )
624 QStringList featureFilters;
630 const QString filter = QStringLiteral(
"(%1) AND (%2)" ).arg(
631 featureFilters.join( QLatin1String(
" OR " ) ),
632 filters.join( QLatin1String(
" OR " ) ) );
636 .setFilterExpression( filter ) );
650 QMap<int, QgsField> keyFields;
657 QgsDebugMsg( QStringLiteral(
"referencing field %1 not found" ).arg( fieldPair.referencingField() ) );
661 keyFields.insert( idx, fld );
664 const auto constFeatureids = fids;
685 QMapIterator<int, QgsField> it( keyFields );
686 while ( it.hasNext() )
709 Q_UNUSED( newRelation )
710 Q_UNUSED( newFeature )
718 Q_UNUSED( newRelation )
719 Q_UNUSED( newNmRelation )
758 , mRelation( relation )
@ Generated
A generated relation is a child of a polymorphic relation.
@ Normal
A normal relation.
This class contains context information for attribute editor widgets.
void setFormFeature(const QgsFeature &feature)
Set current feature for the currently edited form or table row.
const QgsVectorLayerTools * vectorLayerTools() const
Returns the associated vector layer tools.
QgsMessageBar * mainMessageBar()
Returns the main message bar.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
QString expression() const
Returns the original, unmodified expression string.
static QString quotedValue(const QVariant &value)
Returns a string representation of a literal value, including appropriate quotations where required.
static QString quotedColumnRef(QString name)
Returns a quoted column reference (in double quotes)
Wrapper for iterator of features from vector data provider or vector layer.
bool nextFeature(QgsFeature &f)
This class wraps a request for features to a vector layer (or directly its vector data provider).
QgsFeatureRequest & setFilterFids(const QgsFeatureIds &fids)
Sets the feature IDs that should be fetched.
QgsFeatureRequest & setFlags(QgsFeatureRequest::Flags flags)
Sets flags that affect how features will be fetched.
QgsFeatureRequest & setSubsetOfAttributes(const QgsAttributeList &attrs)
Set a subset of attributes that will be fetched.
QgsExpression * filterExpression() const
Returns the filter expression (if set).
QgsFeatureRequest & setFilterExpression(const QString &expression)
Set the filter expression.
@ NoGeometry
Geometry is not required. It may still be returned if e.g. required for a filter condition.
QgsFeatureRequest & setNoAttributes()
Set that no attributes will be fetched.
const QgsFeatureIds & selectedFeatures()
Gets the selected features.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
QVariant attribute(const QString &name) const
Lookup attribute value by attribute name.
Encapsulate a field in an attribute table or data source.
Container of fields for a vector layer.
int indexFromName(const QString &fieldName) const
Gets the field index from the field name.
int indexOf(const QString &fieldName) const
Gets the field index from the field name.
QgsField field(int fieldIdx) const
Returns the field at particular index (must be in range 0..N-1).
QgsField at(int i) const
Returns the field at particular index (must be in range 0..N-1).
int lookupField(const QString &fieldName) const
Looks up field's index from the field name.
A geometry is the spatial representation of a feature.
static void warning(const QString &msg)
Goes to qWarning.
void pushMessage(const QString &text, Qgis::MessageLevel level=Qgis::MessageLevel::Info, int duration=-1)
A convenience method for pushing a message with the specified text to the bar.
A polymorphic relation consists of the same properties like a normal relation except for the referenc...
QString layerRepresentation(const QgsVectorLayer *layer) const
Returns layer representation as evaluated string.
QString referencedLayerField
QgsRelationManager * relationManager
static QgsProject * instance()
Returns the QgsProject singleton instance.
QMap< QPair< QString, QString >, QgsTransactionGroup * > transactionGroups()
Map of transaction groups.
Q_INVOKABLE QgsRelation relation(const QString &id) const
Gets access to a relation by its id.
Defines a relation between matching fields of the two involved tables of a relation.
QgsVectorLayer * referencedLayer
Qgis::RelationshipType type() const
Returns the type of the relation.
QList< QgsRelation::FieldPair > fieldPairs() const
Returns the field pairs which form this relation The first element of each pair are the field names o...
QgsPolymorphicRelation polymorphicRelation
QgsAttributeList referencedFields() const
Returns a list of attributes used to form the referenced fields (most likely primary key) on the refe...
QgsVectorLayer * referencingLayer
QgsFeatureRequest getRelatedFeaturesRequest(const QgsFeature &feature) const
Creates a request to return all the features on the referencing (child) layer which have a foreign ke...
Contains mainly the QMap with QgsVectorLayer and QgsFeatureIds do list all the duplicated features.
QgsFeatureIds duplicatedFeatures(QgsVectorLayer *layer) const
Returns the duplicated features in the given layer.
QList< QgsVectorLayer * > layers() const
Returns all the layers on which features have been duplicated.
Encapsulate geometry and attributes for new features, to be passed to createFeatures.
static QgsFeature duplicateFeature(QgsVectorLayer *layer, const QgsFeature &feature, QgsProject *project, QgsDuplicateFeatureContext &duplicateFeatureContext, const int maxDepth=0, int depth=0, QList< QgsVectorLayer * > referencedLayersBranch=QList< QgsVectorLayer * >())
Duplicates a feature and it's children (one level deep).
QList< QgsVectorLayerUtils::QgsFeatureData > QgsFeaturesDataList
Alias for list of QgsFeatureData.
static QString getFeatureDisplayString(const QgsVectorLayer *layer, const QgsFeature &feature)
static QgsFeatureList createFeatures(const QgsVectorLayer *layer, const QgsFeaturesDataList &featuresData, QgsExpressionContext *context=nullptr)
Creates a set of new features ready for insertion into a layer.
static bool impactsCascadeFeatures(const QgsVectorLayer *layer, const QgsFeatureIds &fids, const QgsProject *project, QgsDuplicateFeatureContext &context, QgsVectorLayerUtils::CascadedFeatureFlags flags=QgsVectorLayerUtils::CascadedFeatureFlags())
Represents a vector layer which manages a vector based data sets.
QgsFeatureIterator getFeatures(const QgsFeatureRequest &request=QgsFeatureRequest()) const FINAL
Queries the layer for features specified in request.
QgsFields fields() const FINAL
Returns the list of fields of this layer.
bool addFeatures(QgsFeatureList &features, QgsFeatureSink::Flags flags=QgsFeatureSink::Flags()) FINAL
Adds a list of features to the sink.
bool deleteFeatures(const QgsFeatureIds &fids, DeleteContext *context=nullptr)
Deletes a set of features from the layer (but does not commit it)
QgsExpressionContext createExpressionContext() const FINAL
This method needs to be reimplemented in all classes which implement this interface and return an exp...
Q_INVOKABLE void selectByIds(const QgsFeatureIds &ids, Qgis::SelectBehavior behavior=Qgis::SelectBehavior::SetSelection)
Selects matching features using a list of feature IDs.
bool changeAttributeValue(QgsFeatureId fid, int field, const QVariant &newValue, const QVariant &oldValue=QVariant(), bool skipDefaultValues=false)
Changes an attribute value for a feature (but does not immediately commit the changes).
bool addFeature(QgsFeature &feature, QgsFeatureSink::Flags flags=QgsFeatureSink::Flags()) FINAL
Adds a single feature to the sink.
QMap< int, QVariant > QgsAttributeMap
QList< QgsFeature > QgsFeatureList
QSet< QgsFeatureId > QgsFeatureIds
#define FID_TO_STRING(fid)
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features
QList< int > QgsAttributeList
#define QgsDebugMsgLevel(str, level)
Context for cascade delete features.
QList< QgsVectorLayer * > handledLayers(bool includeAuxiliaryLayers=true) const
Returns a list of all layers affected by the delete operation.
QgsFeatureIds handledFeatures(QgsVectorLayer *layer) const
Returns a list of feature IDs from the specified layer affected by the delete operation.