-# This file has been auto-generated only because it didn't exist.
-# Feel free to modify it at will; it will not be overwritten automatically.
-
package SL::DB::Invoice;
use strict;
-use List::Util qw(first);
+use Carp;
+use List::Util qw(first sum);
+use Rose::DB::Object::Helpers qw(has_loaded_related forget_related);
use SL::DB::MetaSetup::Invoice;
use SL::DB::Manager::Invoice;
+use SL::DB::Helper::Payment qw(:ALL);
+use SL::DB::Helper::AttrHTML;
+use SL::DB::Helper::AttrSorted;
+use SL::DB::Helper::FlattenToForm;
+use SL::DB::Helper::LinkedRecords;
+use SL::DB::Helper::PDF_A;
+use SL::DB::Helper::PriceTaxCalculator;
+use SL::DB::Helper::PriceUpdater;
+use SL::DB::Helper::SalesPurchaseInvoice;
+use SL::DB::Helper::TransNumberGenerator;
+use SL::DB::Helper::ZUGFeRD;
+use SL::Locale::String qw(t8);
+use SL::DB::CustomVariable;
__PACKAGE__->meta->add_relationship(
invoiceitems => {
with_objects => [ 'part' ]
}
},
+ storno_invoices => {
+ type => 'one to many',
+ class => 'SL::DB::Invoice',
+ column_map => { id => 'storno_id' },
+ },
+ sepa_export_items => {
+ type => 'one to many',
+ class => 'SL::DB::SepaExportItem',
+ column_map => { id => 'ar_id' },
+ manager_args => { with_objects => [ 'sepa_export' ] }
+ },
+ sepa_exports => {
+ type => 'many to many',
+ map_class => 'SL::DB::SepaExportItem',
+ map_from => 'ar',
+ map_to => 'sepa_export',
+ },
+ custom_shipto => {
+ type => 'one to one',
+ class => 'SL::DB::Shipto',
+ column_map => { id => 'trans_id' },
+ query_args => [ module => 'AR' ],
+ },
+ transactions => {
+ type => 'one to many',
+ class => 'SL::DB::AccTransaction',
+ column_map => { id => 'trans_id' },
+ manager_args => {
+ with_objects => [ 'chart' ],
+ sort_by => 'acc_trans_id ASC',
+ },
+ },
+ dunnings => {
+ type => 'one to many',
+ class => 'SL::DB::Dunning',
+ column_map => { id => 'trans_id' },
+ manager_args => { with_objects => [ 'dunnings' ] }
+ },
);
__PACKAGE__->meta->initialize;
+__PACKAGE__->attr_html('notes');
+__PACKAGE__->attr_sorted('items');
+
+__PACKAGE__->before_save('_before_save_set_invnumber');
+
+# hooks
+
+sub _before_save_set_invnumber {
+ my ($self) = @_;
+
+ $self->create_trans_number if !$self->invnumber;
+
+ return 1;
+}
+
# methods
+sub items { goto &invoiceitems; }
+sub add_items { goto &add_invoiceitems; }
+sub record_number { goto &invnumber; };
+
+sub is_sales {
+ # For compatibility with Order, DeliveryOrder
+ croak 'not an accessor' if @_ > 1;
+ return 1;
+}
+
# it is assumed, that ordnumbers are unique here.
sub first_order_by_ordnumber {
my $self = shift;
my $self = shift;
die 'not a setter method' if @_;
- return $self->amount - $self->netamount;
+ return ($self->amount || 0) - ($self->netamount || 0);
}
__PACKAGE__->meta->make_attr_helpers(taxamount => 'numeric(15,5)');
+sub closed {
+ my ($self) = @_;
+ return $self->paid >= $self->amount;
+}
+
+sub _clone_orderitem_delivery_order_item_cvar {
+ my ($cvar) = @_;
+
+ my $cloned = $_->clone_and_reset;
+ $cloned->sub_module('invoice');
+
+ return $cloned;
+}
+
+sub new_from {
+ my ($class, $source, %params) = @_;
+
+ croak("Unsupported source object type '" . ref($source) . "'") unless ref($source) =~ m/^ SL::DB:: (?: Order | DeliveryOrder ) $/x;
+ croak("Cannot create invoices for purchase records") unless $source->customer_id;
+
+ require SL::DB::Employee;
+
+ my (@columns, @item_columns, $item_parent_id_column, $item_parent_column);
+
+ if (ref($source) eq 'SL::DB::Order') {
+ @columns = qw(quonumber delivery_customer_id delivery_vendor_id tax_point);
+ @item_columns = qw(subtotal);
+
+ $item_parent_id_column = 'trans_id';
+ $item_parent_column = 'order';
+
+ } else {
+ @columns = qw(donumber);
+
+ $item_parent_id_column = 'delivery_order_id';
+ $item_parent_column = 'delivery_order';
+ }
+
+ my $terms = $source->can('payment_id') ? $source->payment_terms : undef;
+ $terms = $source->customer->payment_terms if !defined $terms && $source->customer;
+
+ my %args = ( map({ ( $_ => $source->$_ ) } qw(customer_id taxincluded shippingpoint shipvia notes intnotes salesman_id cusordnumber ordnumber department_id
+ cp_id language_id taxzone_id tax_point globalproject_id transaction_description currency_id delivery_term_id
+ billing_address_id), @columns),
+ transdate => $params{transdate} // DateTime->today_local,
+ gldate => DateTime->today_local,
+ duedate => $terms ? $terms->calc_date(reference_date => DateTime->today_local) : DateTime->today_local,
+ invoice => 1,
+ type => 'invoice',
+ storno => 0,
+ paid => 0,
+ employee_id => (SL::DB::Manager::Employee->current || SL::DB::Employee->new(id => $source->employee_id))->id,
+ );
+
+ $args{payment_id} = ( $terms ? $terms->id : $source->payment_id);
+
+ if ($source->type =~ /_delivery_order$/) {
+ $args{deliverydate} = $source->reqdate;
+ if (my $order = SL::DB::Manager::Order->find_by(ordnumber => $source->ordnumber)) {
+ $args{orddate} = $order->transdate;
+ }
+
+ } elsif ($source->type =~ /_order$/) {
+ $args{deliverydate} = $source->reqdate;
+ $args{orddate} = $source->transdate;
+
+ } else {
+ $args{quodate} = $source->transdate;
+ }
+
+ # Custom shipto addresses (the ones specific to the sales/purchase
+ # record and not to the customer/vendor) are only linked from shipto
+ # → ar. Meaning ar.shipto_id will not be filled in that
+ # case.
+ if (!$source->shipto_id && $source->id) {
+ $args{custom_shipto} = $source->custom_shipto->clone($class) if $source->can('custom_shipto') && $source->custom_shipto;
+
+ } else {
+ $args{shipto_id} = $source->shipto_id;
+ }
+
+ my $invoice = $class->new(%args);
+ $invoice->assign_attributes(%{ $params{attributes} }) if $params{attributes};
+ my $items = delete($params{items}) || $source->items_sorted;
+ my %item_parents;
+
+ my @items = map {
+ my $source_item = $_;
+ my $source_item_id = $_->$item_parent_id_column;
+ my @custom_variables = map { _clone_orderitem_delivery_order_item_cvar($_) } @{ $source_item->custom_variables };
+
+ $item_parents{$source_item_id} ||= $source_item->$item_parent_column;
+ my $item_parent = $item_parents{$source_item_id};
+ my $current_invoice_item =
+ SL::DB::InvoiceItem->new(map({ ( $_ => $source_item->$_ ) }
+ qw(parts_id description qty sellprice discount project_id serialnumber pricegroup_id transdate cusordnumber unit
+ base_qty longdescription lastcost price_factor_id active_discount_source active_price_source), @item_columns),
+ deliverydate => $source_item->reqdate,
+ fxsellprice => $source_item->sellprice,
+ custom_variables => \@custom_variables,
+ ordnumber => ref($item_parent) eq 'SL::DB::Order' ? $item_parent->ordnumber : $source_item->ordnumber,
+ donumber => ref($item_parent) eq 'SL::DB::DeliveryOrder' ? $item_parent->donumber : $source_item->can('donumber') ? $source_item->donumber : '',
+ );
+
+ $current_invoice_item->{"converted_from_orderitems_id"} = $_->{id} if ref($item_parent) eq 'SL::DB::Order';
+ $current_invoice_item->{"converted_from_delivery_order_items_id"} = $_->{id} if ref($item_parent) eq 'SL::DB::DeliveryOrder';
+ $current_invoice_item;
+ } @{ $items };
+
+ @items = grep { $params{item_filter}->($_) } @items if $params{item_filter};
+ @items = grep { $_->qty * 1 } @items if $params{skip_items_zero_qty};
+ @items = grep { $_->qty >=0 } @items if $params{skip_items_negative_qty};
+
+ $invoice->invoiceitems(\@items);
+
+ return $invoice;
+}
+
+sub post {
+ my ($self, %params) = @_;
+
+ die "not an invoice" unless $self->invoice;
+
+ require SL::DB::Chart;
+ if (!$params{ar_id}) {
+ my $chart;
+ if ($::instance_conf->get_ar_chart_id) {
+ $chart = SL::DB::Manager::Chart->find_by(id => $::instance_conf->get_ar_chart_id);
+ } else {
+ $chart = SL::DB::Manager::Chart->get_all(query => [ SL::DB::Manager::Chart->link_filter('AR') ],
+ sort_by => 'id ASC',
+ limit => 1)->[0];
+ };
+ croak("No AR chart found and no parameter 'ar_id' given") unless $chart;
+ $params{ar_id} = $chart->id;
+ }
+
+ if (!$self->db->with_transaction(sub {
+ my %data = $self->calculate_prices_and_taxes;
+
+ $self->_post_create_assemblyitem_entries($data{assembly_items});
+ $self->save;
+
+ $self->_post_add_acctrans($data{amounts_cogs});
+ $self->_post_add_acctrans($data{amounts});
+ $self->_post_add_acctrans($data{taxes_by_chart_id});
+
+ $self->_post_add_acctrans({ $params{ar_id} => $self->amount * -1 });
+
+ $self->_post_update_allocated($data{allocated});
+
+ $self->_post_book_rounding($data{rounding});
+
+ 1;
+ })) {
+ $::lxdebug->message(LXDebug->WARN(), "convert_to_invoice failed: " . join("\n", (split(/\n/, $self->db->error))[0..2]));
+ return undef;
+ }
+
+ return $self;
+}
+
+sub _post_add_acctrans {
+ my ($self, $entries) = @_;
+
+ my $default_tax_id = SL::DB::Manager::Tax->find_by(taxkey => 0)->id;
+ my $chart_link;
+
+ require SL::DB::AccTransaction;
+ require SL::DB::Chart;
+ while (my ($chart_id, $spec) = each %{ $entries }) {
+ $spec = { taxkey => 0, tax_id => $default_tax_id, amount => $spec } unless ref $spec;
+ $chart_link = SL::DB::Manager::Chart->find_by(id => $chart_id)->{'link'};
+ $chart_link ||= '';
+
+ if ($spec->{amount} != 0) {
+ SL::DB::AccTransaction->new(trans_id => $self->id,
+ chart_id => $chart_id,
+ amount => $spec->{amount},
+ tax_id => $spec->{tax_id},
+ taxkey => $spec->{taxkey},
+ project_id => $self->globalproject_id,
+ transdate => $self->transdate,
+ chart_link => $chart_link)->save;
+ }
+ }
+}
+
+sub _post_book_rounding {
+ my ($self, $rounding) = @_;
+
+ my $tax_id = SL::DB::Manager::Tax->find_by(taxkey => 0)->id;
+ my $rnd_accno = $rounding == 0 ? 0
+ : $rounding > 0 ? SL::DB::Default->get->rndgain_accno_id
+ : SL::DB::Default->get->rndloss_accno_id
+ ;
+ if ($rnd_accno != 0) {
+ SL::DB::AccTransaction->new(trans_id => $self->id,
+ chart_id => $rnd_accno,
+ amount => $rounding,
+ tax_id => $tax_id,
+ taxkey => 0,
+ project_id => $self->globalproject_id,
+ transdate => $self->transdate,
+ chart_link => $rnd_accno)->save;
+ }
+}
+
+sub add_ar_amount_row {
+ my ($self, %params ) = @_;
+
+ # only allow this method for ar invoices (Debitorenbuchung)
+ die "not an ar invoice" if $self->invoice and not $self->customer_id;
+
+ die "add_ar_amount_row needs a chart object as chart param" unless $params{chart} && $params{chart}->isa('SL::DB::Chart');
+ die "chart must be an AR_amount chart" unless $params{chart}->link =~ /AR_amount/;
+
+ my $acc_trans = [];
+
+ my $roundplaces = 2;
+ my ($netamount,$taxamount);
+
+ $netamount = $params{amount} * 1;
+ my $tax = SL::DB::Manager::Tax->find_by(id => $params{tax_id}) || die "Can't find tax with id " . $params{tax_id};
+
+ if ( $tax and $tax->rate != 0 ) {
+ ($netamount, $taxamount) = Form->calculate_tax($params{amount}, $tax->rate, $self->taxincluded, $roundplaces);
+ };
+ next unless $netamount; # netamount mustn't be zero
+ my $sign = $self->customer_id ? 1 : -1;
+ my $acc = SL::DB::AccTransaction->new(
+ amount => $netamount * $sign,
+ chart_id => $params{chart}->id,
+ chart_link => $params{chart}->link,
+ transdate => $self->transdate,
+ gldate => $self->gldate,
+ taxkey => $tax->taxkey,
+ tax_id => $tax->id,
+ project_id => $params{project_id},
+ );
+
+ $self->add_transactions( $acc );
+ push( @$acc_trans, $acc );
+
+ if ( $taxamount ) {
+ my $acc = SL::DB::AccTransaction->new(
+ amount => $taxamount * $sign,
+ chart_id => $tax->chart_id,
+ chart_link => $tax->chart->link,
+ transdate => $self->transdate,
+ gldate => $self->gldate,
+ taxkey => $tax->taxkey,
+ tax_id => $tax->id,
+ );
+ $self->add_transactions( $acc );
+ push( @$acc_trans, $acc );
+ };
+ return $acc_trans;
+};
+
+sub create_ar_row {
+ my ($self, %params) = @_;
+ # to be called after adding all AR_amount rows, adds an AR row
+
+ # only allow this method for ar invoices (Debitorenbuchung)
+ die if $self->invoice and not $self->customer_id;
+ die "create_ar_row needs a chart object as a parameter" unless $params{chart} and ref($params{chart}) eq 'SL::DB::Chart';
+
+ my @transactions = @{$self->transactions};
+ # die "invoice has no acc_transactions" unless scalar @transactions > 0;
+ return 0 unless scalar @transactions > 0;
+
+ my $chart = $params{chart} || SL::DB::Manager::Chart->find_by(id => $::instance_conf->get_ar_chart_id);
+ die "illegal chart in create_ar_row" unless $chart;
+
+ die "receivables chart must have link 'AR'" unless $chart->link eq 'AR';
+
+ my $acc_trans = [];
+
+ # hardcoded entry for no tax: tax_id and taxkey should be 0
+ my $tax = SL::DB::Manager::Tax->find_by(id => 0, taxkey => 0) || die "Can't find tax with id 0 and taxkey 0";
+
+ my $sign = $self->customer_id ? -1 : 1;
+ my $acc = SL::DB::AccTransaction->new(
+ amount => $self->amount * $sign,
+ chart_id => $params{chart}->id,
+ chart_link => $params{chart}->link,
+ transdate => $self->transdate,
+ taxkey => $tax->taxkey,
+ tax_id => $tax->id,
+ );
+ $self->add_transactions( $acc );
+ push( @$acc_trans, $acc );
+ return $acc_trans;
+}
+
+sub validate_acc_trans {
+ my ($self, %params) = @_;
+ # should be able to check unsaved invoice objects with several acc_trans lines
+
+ die "validate_acc_trans can't check invoice object with empty transactions" unless $self->transactions;
+
+ my @transactions = @{$self->transactions};
+ # die "invoice has no acc_transactions" unless scalar @transactions > 0;
+ return 0 unless scalar @transactions > 0;
+ return 0 unless $self->has_loaded_related('transactions');
+ if ( $params{debug} ) {
+ printf("starting validatation of invoice %s with trans_id %s and taxincluded %s\n", $self->invnumber, $self->id, $self->taxincluded);
+ foreach my $acc ( @transactions ) {
+ printf("chart: %s amount: %s tax_id: %s link: %s\n", $acc->chart->accno, $acc->amount, $acc->tax_id, $acc->chart->link);
+ };
+ };
+
+ my $acc_trans_sum = sum map { $_->amount } @transactions;
+
+ unless ( $::form->round_amount($acc_trans_sum, 10) == 0 ) {
+ my $string = "sum of acc_transactions isn't 0: $acc_trans_sum\n";
+
+ if ( $params{debug} ) {
+ foreach my $trans ( @transactions ) {
+ $string .= sprintf(" %s %s %s\n", $trans->chart->accno, $trans->taxkey, $trans->amount);
+ };
+ };
+ return 0;
+ };
+
+ # only use the first AR entry, so it also works for paid invoices
+ my @ar_transactions = map { $_->amount } grep { $_->chart_link eq 'AR' } @transactions;
+ my $ar_sum = $ar_transactions[0];
+ # my $ar_sum = sum map { $_->amount } grep { $_->chart_link eq 'AR' } @transactions;
+
+ unless ( $::form->round_amount($ar_sum * -1,2) == $::form->round_amount($self->amount,2) ) {
+ if ( $params{debug} ) {
+ printf("debug: (ar_sum) %s = %s (amount)\n", $::form->round_amount($ar_sum * -1,2) , $::form->round_amount($self->amount, 2) );
+ foreach my $trans ( @transactions ) {
+ printf(" %s %s %s %s\n", $trans->chart->accno, $trans->taxkey, $trans->amount, $trans->chart->link);
+ };
+ };
+ die sprintf("sum of ar (%s) isn't equal to invoice amount (%s)", $::form->round_amount($ar_sum * -1,2), $::form->round_amount($self->amount,2));
+ };
+
+ return 1;
+};
+
+sub recalculate_amounts {
+ my ($self, %params) = @_;
+ # calculate and set amount and netamount from acc_trans objects
+
+ croak ("Can only recalculate amounts for ar transactions") if $self->invoice;
+
+ return undef unless $self->has_loaded_related('transactions');
+
+ my ($netamount, $taxamount);
+
+ my @transactions = @{$self->transactions};
+
+ foreach my $acc ( @transactions ) {
+ $netamount += $acc->amount if $acc->chart->link =~ /AR_amount/;
+ $taxamount += $acc->amount if $acc->chart->link =~ /AR_tax/;
+ };
+
+ $self->amount($netamount+$taxamount);
+ $self->netamount($netamount);
+};
+
+
+sub _post_create_assemblyitem_entries {
+ my ($self, $assembly_entries) = @_;
+
+ my $items = $self->invoiceitems;
+ my @new_items;
+
+ my $item_idx = 0;
+ foreach my $item (@{ $items }) {
+ next if $item->assemblyitem;
+
+ push @new_items, $item;
+ $item_idx++;
+
+ foreach my $assembly_item (@{ $assembly_entries->[$item_idx] || [ ] }) {
+ push @new_items, SL::DB::InvoiceItem->new(parts_id => $assembly_item->{part},
+ description => $assembly_item->{part}->description,
+ unit => $assembly_item->{part}->unit,
+ qty => $assembly_item->{qty},
+ allocated => $assembly_item->{allocated},
+ sellprice => 0,
+ fxsellprice => 0,
+ assemblyitem => 't');
+ }
+ }
+
+ $self->invoiceitems(\@new_items);
+}
+
+sub _post_update_allocated {
+ my ($self, $allocated) = @_;
+
+ while (my ($invoice_id, $diff) = each %{ $allocated }) {
+ SL::DB::Manager::InvoiceItem->update_all(set => { allocated => { sql => "allocated + $diff" } },
+ where => [ id => $invoice_id ]);
+ }
+}
+
+sub invoice_type {
+ my ($self) = @_;
+
+ return 'ar_transaction' if !$self->invoice;
+ return 'invoice_for_advance_payment_storno' if $self->type eq 'invoice_for_advance_payment' && $self->amount < 0 && $self->storno;
+ return 'invoice_for_advance_payment' if $self->type eq 'invoice_for_advance_payment';
+ return 'final_invoice' if $self->type eq 'final_invoice';
+ # stornoed credit_notes are still credit notes and not invoices
+ return 'credit_note' if $self->type eq 'credit_note' && $self->amount < 0;
+ return 'invoice_storno' if $self->type ne 'credit_note' && $self->amount < 0 && $self->storno;
+ return 'credit_note_storno' if $self->type eq 'credit_note' && $self->amount > 0 && $self->storno;
+ return 'invoice';
+}
+
+sub displayable_state {
+ my $self = shift;
+
+ return $self->closed ? $::locale->text('closed') : $::locale->text('open');
+}
+
+sub displayable_type {
+ my ($self) = @_;
+
+ return t8('AR Transaction') if $self->invoice_type eq 'ar_transaction';
+ return t8('Credit Note') if $self->invoice_type eq 'credit_note';
+ return t8('Invoice') . "(" . t8('Storno') . ")" if $self->invoice_type eq 'invoice_storno';
+ return t8('Credit Note') . "(" . t8('Storno') . ")" if $self->invoice_type eq 'credit_note_storno';
+ return t8('Invoice for Advance Payment') if $self->invoice_type eq 'invoice_for_advance_payment';
+ return t8('Invoice for Advance Payment') . "(" . t8('Storno') . ")" if $self->invoice_type eq 'invoice_for_advance_payment_storno';
+ return t8('Final Invoice') if $self->invoice_type eq 'final_invoice';
+ return t8('Invoice');
+}
+
+sub displayable_name {
+ join ' ', grep $_, map $_[0]->$_, qw(displayable_type record_number);
+};
+
+sub abbreviation {
+ my ($self) = @_;
+
+ return t8('AR Transaction (abbreviation)') if $self->invoice_type eq 'ar_transaction';
+ return t8('Credit note (one letter abbreviation)') if $self->invoice_type eq 'credit_note';
+ return t8('Invoice (one letter abbreviation)') . "(" . t8('Storno (one letter abbreviation)') . ")" if $self->invoice_type eq 'invoice_storno';
+ return t8('Credit note (one letter abbreviation)') . "(" . t8('Storno (one letter abbreviation)') . ")" if $self->invoice_type eq 'credit_note_storno';
+ return t8('Invoice for Advance Payment (one letter abbreviation)') if $self->invoice_type eq 'invoice_for_advance_payment';
+ return t8('Invoice for Advance Payment with Storno (abbreviation)') if $self->invoice_type eq 'invoice_for_advance_payment_storno';
+ return t8('Final Invoice (one letter abbreviation)') if $self->invoice_type eq 'final_invoice';
+ return t8('Invoice (one letter abbreviation)');
+}
+
+sub oneline_summary {
+ my $self = shift;
+
+ return sprintf("%s: %s %s %s (%s)", $self->abbreviation, $self->invnumber, $self->customer->name,
+ $::form->format_amount(\%::myconfig, $self->amount,2), $self->transdate->to_kivitendo);
+}
+
+sub date {
+ goto &transdate;
+}
+
+sub reqdate {
+ goto &duedate;
+}
+
+sub customervendor {
+ goto &customer;
+}
+
+sub link {
+ my ($self) = @_;
+
+ my $html;
+ $html = $self->presenter->sales_invoice(display => 'inline') if $self->invoice;
+ $html = $self->presenter->ar_transaction(display => 'inline') if !$self->invoice;
+
+ return $html;
+}
+
+sub mark_as_paid {
+ my ($self) = @_;
+
+ $self->update_attributes(paid => $self->amount);
+}
+
+sub effective_tax_point {
+ my ($self) = @_;
+
+ return $self->tax_point || $self->deliverydate || $self->transdate;
+}
+
1;
+
+__END__
+
+=pod
+
+=encoding UTF-8
+
+=head1 NAME
+
+SL::DB::Invoice: Rose model for invoices (table "ar")
+
+=head1 FUNCTIONS
+
+=over 4
+
+=item C<new_from $source, %params>
+
+Creates a new C<SL::DB::Invoice> instance and copies as much
+information from C<$source> as possible. At the moment only sales
+orders and sales quotations are supported as sources.
+
+The conversion copies order items into invoice items. Dates are copied
+as appropriate, e.g. the C<transdate> field from an order will be
+copied into the invoice's C<orddate> field.
+
+C<%params> can include the following options:
+
+=over 2
+
+=item C<items>
+
+An optional array reference of RDBO instances for the items to use. If
+missing then the method C<items_sorted> will be called on
+C<$source>. This option can be used to override the sorting, to
+exclude certain positions or to add additional ones.
+
+=item C<skip_items_negative_qty>
+
+If trueish then items with a negative quantity are skipped. Items with
+a quantity of 0 are not affected by this option.
+
+=item C<skip_items_zero_qty>
+
+If trueish then items with a quantity of 0 are skipped.
+
+=item C<item_filter>
+
+An optional code reference that is called for each item with the item
+as its sole parameter. Items for which the code reference returns a
+falsish value will be skipped.
+
+=item C<attributes>
+
+An optional hash reference. If it exists then it is passed to C<new>
+allowing the caller to set certain attributes for the new invoice.
+For example to set a different transdate (default is the current date),
+call the method like this:
+
+ my %params;
+ $params{attributes}{transdate} = '28.08.2015';
+ $invoice = SL::DB::Invoice->new_from($self, %params)->post || die;
+
+=back
+
+Amounts, prices and taxes are not
+calculated. L<SL::DB::Helper::PriceTaxCalculator::calculate_prices_and_taxes>
+can be used for this.
+
+The object returned is not saved.
+
+=item C<post %params>
+
+Posts the invoice. Required parameters are:
+
+=over 2
+
+=item * C<ar_id>
+
+The ID of the accounts receivable chart the invoice's amounts are
+posted to. If it is not set then the first chart configured for
+accounts receivables is used.
+
+=back
+
+This function implements several steps:
+
+=over 2
+
+=item 1. It calculates all prices, amounts and taxes by calling
+L<SL::DB::Helper::PriceTaxCalculator::calculate_prices_and_taxes>.
+
+=item 2. A new and unique invoice number is created.
+
+=item 3. All amounts for costs of goods sold are recorded in
+C<acc_trans>.
+
+=item 4. All amounts for parts, services and assemblies are recorded
+in C<acc_trans> with their respective charts. This is determined by
+the part's buchungsgruppen.
+
+=item 5. The total amount is posted to the accounts receivable chart
+and recorded in C<acc_trans>.
+
+=item 6. Items in C<invoice> are updated according to their allocation
+status (regarding costs of goods sold). Will only be done if
+kivitendo is not configured to use Einnahmenüberschussrechnungen.
+
+=item 7. The invoice and its items are saved.
+
+=back
+
+Returns C<$self> on success and C<undef> on failure. The whole process
+is run inside a transaction. If it fails then nothing is saved to or
+changed in the database. A new transaction is only started if none are
+active.
+
+=item C<basic_info $field>
+
+See L<SL::DB::Object::basic_info>.
+
+=item C<closed>
+
+Returns 1 or 0, depending on whether the invoice is closed or not. Currently
+invoices that are overpaid also count as closed and credit notes in general.
+
+=item C<recalculate_amounts %params>
+
+Calculate and set amount and netamount from acc_trans objects by summing up the
+values of acc_trans objects with AR_amount and AR_tax link charts.
+amount and netamount are set to the calculated values.
+
+=item C<validate_acc_trans>
+
+Checks if the sum of all associated acc_trans objects is 0 and checks whether
+the amount of the AR acc_transaction matches the AR amount. Only the first AR
+line is checked, because the sum of all AR lines is 0 for paid invoices.
+
+Returns 0 or 1.
+
+Can be called with a debug parameter which writes debug info to STDOUT, which is
+useful in console mode or while writing tests.
+
+ my $ar = SL::DB::Manager::Invoice->get_first();
+ $ar->validate_acc_trans(debug => 1);
+
+=item C<create_ar_row %params>
+
+Creates a new acc_trans entry for the receivable (AR) entry of an existing AR
+invoice object, which already has some income and tax acc_trans entries.
+
+The acc_trans entry is also returned inside an array ref.
+
+Mandatory params are
+
+=over 2
+
+=item * chart as an RDBO object, e.g. for bank. Must be a 'paid' chart.
+
+=back
+
+Currently the amount of the invoice object is used for the acc_trans amount.
+Use C<recalculate_amounts> before calling this method if amount isn't known
+yet or you didn't set it manually.
+
+=item C<add_ar_amount_row %params>
+
+Add a new entry for an existing AR invoice object. Creates an acc_trans entry,
+and also adds an acc_trans tax entry, if the tax has an associated tax chart.
+Also all acc_trans entries that were created are returned inside an array ref.
+
+Mandatory params are
+
+=over 2
+
+=item * chart as an RDBO object, should be an income chart (link = AR_amount)
+
+=item * tax_id
+
+=item * amount
+
+=back
+
+=item C<mark_as_paid>
+
+Marks the invoice as paid by setting its C<paid> member to the value of C<amount>.
+
+=back
+
+=head1 TODO
+
+ As explained in the new_from example, it is possible to set transdate to a new value.
+ From a user / programm point of view transdate is more than holy and there should be
+ some validity checker available for controller code. At least the same logic like in
+ Form.pm from ar.pl should be available:
+ # see old stuff ar.pl post
+ #$form->error($locale->text('Cannot post transaction above the maximum future booking date!'))
+ # if ($form->date_max_future($transdate, \%myconfig));
+ #$form->error($locale->text('Cannot post transaction for a closed period!')) if ($form->date_closed($form->{"transdate"}, \%myconfig));
+
+=head1 AUTHOR
+
+Moritz Bunkus E<lt>m.bunkus@linet-services.deE<gt>
+
+=cut