Add the formnovalidate attribute to update and add products buttons

They are to complete the invoice, so it can be in an invalid date, but
we do not want to force people to finish all required inputs before they
can add products or update quantities, do we?

Now had to add the empty option label for customer in all cases, because
it could be empty, although that should be done regardless in case
someone has a browser that does not validate fields.

deploy/add_product.sql

@@ -0,0 +1,39 @@
+-- Deploy numerus:add_product to pg
+-- requires: schema_numerus
+-- requires: product
+-- requires: product_tax
+-- requires: parse_price
+-- requires: company
+-- requires: currency
+
+begin;
+
+set search_path to numerus, public;
+
+create or replace function add_product(company_id integer, name text, description text, price text, taxes integer[]) returns uuid
+as $$
+declare
+	pid integer;
+	pslug uuid;
+begin
+	insert into product (company_id, name, description, price)
+	select add_product.company_id, add_product.name, add_product.description, parse_price(add_product.price, decimal_digits)
+	from company
+	join currency using (currency_code)
+	where company.company_id = add_product.company_id
+	returning product_id, slug
+	into pid, pslug;
+
+	insert into product_tax (product_id, tax_id)
+	select pid, tax_id
+	from unnest(taxes) as tax(tax_id);
+
+	return pslug;
+end;
+$$ language plpgsql;
+
+revoke execute on function add_product(integer, text, text, text, integer[]) from public;
+grant execute on function add_product(integer, text, text, text, integer[]) to invoicer;
+grant execute on function add_product(integer, text, text, text, integer[]) to admin;
+
+commit;

deploy/edit_product.sql

@@ -0,0 +1,47 @@
+-- Deploy numerus:edit_product to pg
+-- requires: schema_numerus
+-- requires: product
+-- requires: product_tax
+-- requires: parse_price
+-- requires: company
+-- requires: currency
+
+begin;
+
+set search_path to numerus, public;
+
+create or replace function edit_product(slug uuid, name text, description text, price text, taxes integer[]) returns boolean
+as $$
+declare
+	pid integer;
+begin
+	update product
+	set name = edit_product.name
+	  , description = edit_product.description
+	  , price = parse_price(edit_product.price, decimal_digits)
+	from company
+	join currency using (currency_code)
+	where product.company_id = company.company_id
+	  and product.slug = edit_product.slug
+	returning product_id
+	into pid;
+
+	if pid is null then
+		return false;
+	end if;
+
+	delete from product_tax where product_id = pid;
+
+	insert into product_tax(product_id, tax_id)
+	select pid, tax_id
+	from unnest(taxes) as tax(tax_id);
+
+	return true;
+end;
+$$ language plpgsql;
+
+revoke execute on function edit_product(uuid, text, text, text, integer[]) from public;
+grant execute on function edit_product(uuid, text, text, text, integer[]) to invoicer;
+grant execute on function edit_product(uuid, text, text, text, integer[]) to admin;
+
+commit;

pkg/contacts.go

@@ -2,7 +2,6 @@ package pkg
 
 import (
 	"context"
-	"github.com/jackc/pgx/v4"
 	"github.com/julienschmidt/httprouter"
 	"html/template"
 	"net/http"
@@ -38,14 +37,9 @@ func GetContactForm(w http.ResponseWriter, r *http.Request, params httprouter.Pa
 		mustRenderNewContactForm(w, r, form)
 		return
 	}
-	err := conn.QueryRow(r.Context(), "select business_name, substr(vatin::text, 3), trade_name, phone, email, web, address, city, province, postal_code, country_code from contact where slug = $1", slug).Scan(form.BusinessName, form.VATIN, form.TradeName, form.Phone, form.Email, form.Web, form.Address, form.City, form.Province, form.PostalCode, form.Country)
-	if err != nil {
-		if err == pgx.ErrNoRows {
-			http.NotFound(w, r)
-			return
-		} else {
-			panic(err)
-		}
+	if notFoundErrorOrPanic(conn.QueryRow(r.Context(), "select business_name, substr(vatin::text, 3), trade_name, phone, email, web, address, city, province, postal_code, country_code from contact where slug = $1", slug).Scan(form.BusinessName, form.VATIN, form.TradeName, form.Phone, form.Email, form.Web, form.Address, form.City, form.Province, form.PostalCode, form.Country)) {
+		http.NotFound(w, r)
+		return
 	}
 	w.WriteHeader(http.StatusOK)
 	mustRenderEditContactForm(w, r, form)

pkg/db.go

@@ -50,6 +50,16 @@ func NewDatabase(ctx context.Context, connString string) (*Db, error) {
 	return &Db{pool}, nil
 }
 
+func notFoundErrorOrPanic(err error) bool {
+	if err == pgx.ErrNoRows {
+		return true
+	}
+	if err != nil {
+		panic(err)
+	}
+	return false
+}
+
 func (db *Db) Acquire(ctx context.Context) (*Conn, error) {
 	conn, err := db.Pool.Acquire(ctx)
 	if err != nil {
@@ -80,16 +90,21 @@ func (c *Conn) MustBegin(ctx context.Context) *Tx {
 
 func (c *Conn) MustGetText(ctx context.Context, def string, sql string, args ...interface{}) string {
 	var result string
-	if err := c.Conn.QueryRow(ctx, sql, args...).Scan(&result); err != nil {
-		if err == pgx.ErrNoRows {
-			return def
-		}
-		panic(err)
+	if notFoundErrorOrPanic(c.Conn.QueryRow(ctx, sql, args...).Scan(&result)) {
+		return def
 	}
 
 	return result
 }
 
+func (c *Conn) MustGetBool(ctx context.Context, sql string, args ...interface{}) bool {
+	var result bool
+	if err := c.Conn.QueryRow(ctx, sql, args...).Scan(&result); err != nil {
+		panic(err)
+	}
+	return result
+}
+
 func (c *Conn) MustExec(ctx context.Context, sql string, args ...interface{}) {
 	if _, err := c.Conn.Exec(ctx, sql, args...); err != nil {
 		panic(err)
@@ -130,11 +145,8 @@ func (tx *Tx) MustGetInteger(ctx context.Context, sql string, args ...interface{
 
 func (tx *Tx) MustGetIntegerOrDefault(ctx context.Context, def int, sql string, args ...interface{}) int {
 	var result int
-	if err := tx.QueryRow(ctx, sql, args...).Scan(&result); err != nil {
-		if err == pgx.ErrNoRows {
-			return def
-		}
-		panic(err)
+	if notFoundErrorOrPanic(tx.QueryRow(ctx, sql, args...).Scan(&result)) {
+		return def
 	}
 	return result
 }

pkg/invoices.go

@@ -28,23 +28,19 @@ type InvoicesIndexPage struct {
 
 func IndexInvoices(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
 	page := &InvoicesIndexPage{
-		Invoices: mustGetInvoiceEntries(r.Context(), getConn(r), mustGetCompany(r), getLocale(r)),
+		Invoices: mustCollectInvoiceEntries(r.Context(), getConn(r), mustGetCompany(r), getLocale(r)),
 	}
 	mustRenderAppTemplate(w, r, "invoices/index.gohtml", page)
 }
 
-func mustGetInvoiceEntries(ctx context.Context, conn *Conn, company *Company, locale *Locale) []*InvoiceEntry {
-	rows, err := conn.Query(ctx, "select invoice.slug, invoice_date, invoice_number, contact.business_name, contact.slug, invoice.invoice_status, isi18n.name from invoice join contact using (contact_id) join invoice_status_i18n isi18n on invoice.invoice_status = isi18n.invoice_status and isi18n.lang_tag = $2 where invoice.company_id = $1 order by invoice_date, invoice_number", company.Id, locale.Language.String())
-	if err != nil {
-		panic(err)
-	}
+func mustCollectInvoiceEntries(ctx context.Context, conn *Conn, company *Company, locale *Locale) []*InvoiceEntry {
+	rows := conn.MustQuery(ctx, "select invoice.slug, invoice_date, invoice_number, contact.business_name, contact.slug, invoice.invoice_status, isi18n.name from invoice join contact using (contact_id) join invoice_status_i18n isi18n on invoice.invoice_status = isi18n.invoice_status and isi18n.lang_tag = $2 where invoice.company_id = $1 order by invoice_date, invoice_number", company.Id, locale.Language.String())
 	defer rows.Close()
 
 	var entries []*InvoiceEntry
 	for rows.Next() {
 		entry := &InvoiceEntry{}
-		err = rows.Scan(&entry.Slug, &entry.Date, &entry.Number, &entry.CustomerName, &entry.CustomerSlug, &entry.Status, &entry.StatusLabel)
-		if err != nil {
+		if err := rows.Scan(&entry.Slug, &entry.Date, &entry.Number, &entry.CustomerName, &entry.CustomerSlug, &entry.Status, &entry.StatusLabel); err != nil {
 			panic(err)
 		}
 		entries = append(entries, entry)
@@ -63,7 +59,6 @@ func GetInvoiceForm(w http.ResponseWriter, r *http.Request, params httprouter.Pa
 	form := newInvoiceForm(r.Context(), conn, locale, company)
 	slug := params[0].Value
 	if slug == "new" {
-		form.Customer.EmptyLabel = gettext("Select a customer to bill.", locale)
 		form.Date.Val = time.Now().Format("2006-01-02")
 		w.WriteHeader(http.StatusOK)
 		mustRenderNewInvoiceForm(w, r, form)
@@ -72,6 +67,8 @@ func GetInvoiceForm(w http.ResponseWriter, r *http.Request, params httprouter.Pa
 }
 
 func mustRenderNewInvoiceForm(w http.ResponseWriter, r *http.Request, form *invoiceForm) {
+	locale := getLocale(r)
+	form.Customer.EmptyLabel = gettext("Select a customer to bill.", locale)
 	mustRenderAppTemplate(w, r, "invoices/new.gohtml", form)
 }
 

pkg/products.go

@@ -3,11 +3,11 @@ package pkg
 import (
 	"context"
 	"fmt"
-	"github.com/jackc/pgx/v4"
 	"github.com/julienschmidt/httprouter"
 	"html/template"
 	"math"
 	"net/http"
+	"strconv"
 )
 
 type ProductEntry struct {
@@ -40,25 +40,9 @@ func GetProductForm(w http.ResponseWriter, r *http.Request, params httprouter.Pa
 		mustRenderNewProductForm(w, r, form)
 		return
 	}
-	var productId int
-	err := conn.QueryRow(r.Context(), "select product_id, product.name, product.description, to_price(price, decimal_digits) from product join company using (company_id) join currency using (currency_code) where product.slug = $1", slug).Scan(&productId, form.Name, form.Description, form.Price)
-	if err != nil {
-		if err == pgx.ErrNoRows {
-			http.NotFound(w, r)
-			return
-		} else {
-			panic(err)
-		}
-	}
-	rows, err := conn.Query(r.Context(), "select tax_id from product_tax where product_id = $1", productId)
-	if err != nil {
-		panic(err)
-	}
-	defer rows.Close()
-	for rows.Next() {
-		if err := rows.Scan(form.Tax); err != nil {
-			panic(err)
-		}
+	if notFoundErrorOrPanic(conn.QueryRow(r.Context(), "select product.name, product.description, to_price(price, decimal_digits), array_agg(tax_id) from product join product_tax using (product_id) join company using (company_id) join currency using (currency_code) where product.slug = $1 group by product_id, product.name, product.description, price, decimal_digits", slug).Scan(form.Name, form.Description, form.Price, form.Tax)) {
+		http.NotFound(w, r)
+		return
 	}
 	w.WriteHeader(http.StatusOK)
 	mustRenderEditProductForm(w, r, form)
@@ -89,27 +73,31 @@ func HandleAddProduct(w http.ResponseWriter, r *http.Request, _ httprouter.Param
 		mustRenderNewProductForm(w, r, form)
 		return
 	}
-	tx := conn.MustBegin(r.Context())
-	productId := tx.MustGetInteger(r.Context(), "insert into product (company_id, name, description, price) select company_id, $2, $3, parse_price($4, decimal_digits) from company join currency using (currency_code) where company_id = $1 returning product_id", company.Id, form.Name, form.Description, form.Price)
-	if len(form.Tax.Selected) > 0 {
-		batch := &pgx.Batch{}
-		for _, tax := range form.Tax.Selected {
-			batch.Queue("insert into product_tax(product_id, tax_id) values ($1, $2)", productId, tax)
-		}
-		br := tx.SendBatch(r.Context(), batch)
-		for range form.Tax.Selected {
-			if _, err := br.Exec(); err != nil {
-				panic(err)
-			}
-		}
-		if err := br.Close(); err != nil {
-			panic(err)
-		}
-	}
-	tx.MustCommit(r.Context())
+	taxes := mustSliceAtoi(form.Tax.Selected)
+	conn.MustExec(r.Context(), "select add_product($1, $2, $3, $4, $5)", company.Id, form.Name, form.Description, form.Price, taxes)
 	http.Redirect(w, r, companyURI(company, "/products"), http.StatusSeeOther)
 }
 
+func sliceAtoi(s []string) ([]int, error) {
+	i := []int{}
+	for _, vs := range s {
+		vi, err := strconv.Atoi(vs)
+		if err != nil {
+			return i, err
+		}
+		i = append(i, vi)
+	}
+	return i, nil
+}
+
+func mustSliceAtoi(s []string) []int {
+	i, err := sliceAtoi(s)
+	if err != nil {
+		panic(err)
+	}
+	return i
+}
+
 func HandleUpdateProduct(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
 	conn := getConn(r)
 	locale := getLocale(r)
@@ -128,28 +116,11 @@ func HandleUpdateProduct(w http.ResponseWriter, r *http.Request, params httprout
 		mustRenderEditProductForm(w, r, form)
 		return
 	}
-	tx := conn.MustBegin(r.Context())
 	slug := params[0].Value
-	productId := tx.MustGetIntegerOrDefault(r.Context(), 0, "update product set name = $1, description = $2, price = parse_price($3, decimal_digits) from company join currency using (currency_code) where product.company_id = company.company_id and product.slug = $4 returning product_id", form.Name, form.Description, form.Price, slug)
-	if productId == 0 {
-		tx.MustRollback(r.Context())
+	taxes := mustSliceAtoi(form.Tax.Selected)
+	if ok := conn.MustGetBool(r.Context(), "select edit_product($1, $2, $3, $4, $5)", slug, form.Name, form.Description, form.Price, taxes); !ok {
 		http.NotFound(w, r)
 	}
-	batch := &pgx.Batch{}
-	batch.Queue("delete from product_tax where product_id = $1", productId)
-	for _, tax := range form.Tax.Selected {
-		batch.Queue("insert into product_tax(product_id, tax_id) values ($1, $2)", productId, tax)
-	}
-	br := tx.SendBatch(r.Context(), batch)
-	for i := 0; i < batch.Len(); i++ {
-		if _, err := br.Exec(); err != nil {
-			panic(err)
-		}
-	}
-	if err := br.Close(); err != nil {
-		panic(err)
-	}
-	tx.MustCommit(r.Context())
 	http.Redirect(w, r, companyURI(company, "/products/"+slug), http.StatusSeeOther)
 }
 

revert/add_product.sql

@@ -0,0 +1,7 @@
+-- Revert numerus:add_product from pg
+
+begin;
+
+drop function if exists numerus.add_product(integer, text, text, text, integer[]);
+
+commit;

revert/edit_product.sql

@@ -0,0 +1,7 @@
+-- Revert numerus:edit_product from pg
+
+begin;
+
+drop function if exists numerus.edit_product(uuid, text, text, text, integer[]);
+
+commit;

sqitch.plan

@@ -49,3 +49,5 @@ product_tax [schema_numerus product tax] 2023-02-08T11:36:49Z jordi fita mas <jo
 invoice [schema_numerus company contact invoice_status currency] 2023-02-09T09:52:21Z jordi fita mas <jordi@tandem.blog> # Add relation for invoice
 discount_rate [schema_numerus] 2023-02-10T17:22:40Z jordi fita mas <jordi@tandem.blog> # Add domain for discount rates
 invoice_product [schema_numerus invoice discount_rate] 2023-02-10T17:07:08Z jordi fita mas <jordi@tandem.blog> # Add relation for invoice product
+add_product [schema_numerus product product_tax parse_price company currency] 2023-02-14T10:32:18Z jordi fita mas <jordi@tandem.blog> # Add function to add new products
+edit_product [schema_numerus product product_tax parse_price company currency] 2023-02-14T11:06:03Z jordi fita mas <jordi@tandem.blog> # Add function to edit products

test/add_product.sql

@@ -0,0 +1,80 @@
+-- Test add_product
+set client_min_messages to warning;
+create extension if not exists pgtap;
+reset client_min_messages;
+
+begin;
+
+select plan(14);
+
+set search_path to auth, numerus, public;
+
+select has_function('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]']);
+select function_lang_is('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'plpgsql');
+select function_returns('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'uuid');
+select isnt_definer('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]']);
+select volatility_is('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'volatile');
+select function_privs_are('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'guest', array []::text[]);
+select function_privs_are('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'invoicer', array ['EXECUTE']);
+select function_privs_are('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'admin', array ['EXECUTE']);
+select function_privs_are('numerus', 'add_product', array ['integer', 'text', 'text', 'text', 'integer[]'], 'authenticator', array []::text[]);
+
+
+set client_min_messages to warning;
+truncate product_tax cascade;
+truncate product cascade;
+truncate tax cascade;
+truncate company cascade;
+reset client_min_messages;
+
+
+insert into company (company_id, business_name, vatin, trade_name, phone, email, web, address, city, province, postal_code, country_code, currency_code)
+values (1, 'Company 2', 'XX123', '', '555-555-555', 'a@a', '', '', '', '', '', 'ES', 'EUR')
+     , (2, 'Company 4', 'XX234', '', '666-666-666', 'b@b', '', '', '', '', '', 'FR', 'USD')
+;
+
+insert into tax (tax_id, company_id, name, rate)
+values (3, 1, 'IRPF -15 %', -0.15)
+     , (4, 1, 'IVA 21 %', 0.21)
+     , (5, 2, 'IRPF -7 %', -0.07)
+     , (6, 2, 'IVA 10 %', 0.10)
+;
+
+
+select lives_ok(
+	$$ select add_product(1, 'Product 1', 'Description 1', '12.12', array[3, 4]) $$,
+	'Should be able to add product to first company'
+);
+
+select lives_ok(
+	$$ select add_product(2, 'Product 2', 'Description 2', '24.24', array[6]) $$,
+	'Should be able to add product to second company'
+);
+
+select lives_ok(
+	$$ select add_product(2, 'Product 3', 'Description 3', '36.36', array[]::integer[]) $$,
+	'Should be able to add product without taxes'
+);
+
+select bag_eq(
+	$$ select company_id, name, description, price, created_at from product $$,
+	$$ values (1, 'Product 1', 'Description 1', 1212, current_timestamp)
+	        , (2, 'Product 2', 'Description 2', 2424, current_timestamp)
+		, (2, 'Product 3', 'Description 3', 3636, current_timestamp)
+	$$,
+	'Should have added all three products'
+);
+
+select bag_eq(
+	$$ select tax_id, name from product_tax join product using (product_id) $$,
+	$$ values (3, 'Product 1')
+	        , (4, 'Product 1')
+		, (6, 'Product 2')
+	$$,
+	'Should have added the taxes for the products we told to'
+);
+
+select *
+from finish();
+
+rollback;

test/edit_product.sql

@@ -0,0 +1,101 @@
+-- Test edit_product
+set client_min_messages to warning;
+create extension if not exists pgtap;
+reset client_min_messages;
+
+begin;
+
+select plan(15);
+
+set search_path to auth, numerus, public;
+
+select has_function('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]']);
+select function_lang_is('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'plpgsql');
+select function_returns('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'boolean');
+select isnt_definer('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]']);
+select volatility_is('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'volatile');
+select function_privs_are('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'guest', array []::text[]);
+select function_privs_are('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'invoicer', array ['EXECUTE']);
+select function_privs_are('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'admin', array ['EXECUTE']);
+select function_privs_are('numerus', 'edit_product', array ['uuid', 'text', 'text', 'text', 'integer[]'], 'authenticator', array []::text[]);
+
+
+set client_min_messages to warning;
+truncate product_tax cascade;
+truncate product cascade;
+truncate tax cascade;
+truncate company cascade;
+reset client_min_messages;
+
+
+insert into company (company_id, business_name, vatin, trade_name, phone, email, web, address, city, province, postal_code, country_code, currency_code)
+values (1, 'Company 2', 'XX123', '', '555-555-555', 'a@a', '', '', '', '', '', 'ES', 'EUR')
+     , (2, 'Company 4', 'XX234', '', '666-666-666', 'b@b', '', '', '', '', '', 'FR', 'USD')
+;
+
+insert into tax (tax_id, company_id, name, rate)
+values (3, 1, 'IRPF -15 %', -0.15)
+     , (4, 1, 'IVA 21 %', 0.21)
+     , (5, 2, 'IRPF -7 %', -0.07)
+     , (6, 2, 'IVA 10 %', 0.10)
+;
+
+insert into product (product_id, company_id, slug, name, description, price)
+values (7, 1, 'd2300404-bd23-48b3-8e2b-2bbf86dc7bd6', 'Product 01', 'Description01', 1200)
+     , (8, 2, '2f085b8b-da90-41fe-b8cf-6ba8d94cfa38', 'Product 02', 'Description02', 2400)
+     , (9, 2, '84044d0b-af33-442a-95a6-21efc77260d5', 'Product 03', 'Description03', 3600)
+;
+
+insert into product_tax (product_id, tax_id)
+values (7, 3)
+     , (8, 5)
+     , (9, 5)
+     , (9, 6)
+;
+
+select is(
+	edit_product('d2300404-bd23-48b3-8e2b-2bbf86dc7bd6', 'Product 1', 'Description 1', '12.12', array[3, 4]),
+	true,
+	'Should be able to edit product from first company'
+);
+
+select is(
+	edit_product('2f085b8b-da90-41fe-b8cf-6ba8d94cfa38', 'Product 2', 'Description 2', '24.24', array[6]),
+	true,
+	'Should be able to edit product from second company'
+);
+
+select is(
+	edit_product('84044d0b-af33-442a-95a6-21efc77260d5', 'Product 3', 'Description 3', '36.36', array[]::integer[]),
+	true,
+	'Should be able to edit a product a remove all taxes'
+);
+
+select is(
+	edit_product('87e158d1-a0f5-48a7-854b-b86d7b4bb21c', 'Product 4', 'Description 4', '48.48', array[]::integer[]),
+	false,
+	'Should return false when the product does not exist'
+);
+
+select bag_eq(
+	$$ select product_id, company_id, name, description, price from product $$,
+	$$ values (7, 1, 'Product 1', 'Description 1', 1212)
+	        , (8, 2, 'Product 2', 'Description 2', 2424)
+		, (9, 2, 'Product 3', 'Description 3', 3636)
+	$$,
+	'Should have edited all three products'
+);
+
+select bag_eq(
+	$$ select product_id, tax_id from product_tax $$,
+	$$ values (7, 3)
+	        , (7, 4)
+		, (8, 6)
+	$$,
+	'Should have updated the taxes for the products we told to'
+);
+
+select *
+from finish();
+
+rollback;

test/product_tax.sql

@@ -33,8 +33,8 @@ select col_hasnt_default('product_tax', 'tax_id');
 
 
 set client_min_messages to warning;
-truncate product cascade;
 truncate product_tax cascade;
+truncate product cascade;
 truncate tax cascade;
 truncate company_user cascade;
 truncate company cascade;

verify/add_product.sql

@@ -0,0 +1,7 @@
+-- Verify numerus:add_product on pg
+
+begin;
+
+select has_function_privilege('numerus.add_product(integer, text, text, text, integer[])', 'execute');
+
+rollback;

verify/edit_product.sql

@@ -0,0 +1,7 @@
+-- Verify numerus:edit_product on pg
+
+begin;
+
+select has_function_privilege('numerus.edit_product(uuid, text, text, text, integer[])', 'execute');
+
+rollback;

web/template/invoices/new.gohtml

@@ -34,8 +34,10 @@
             {{- end }}
 
             <fieldset>
-                <button name="action" value="products" type="submit">{{( pgettext "Add products" "action" )}}</button>
-                <button name="action" value="update" type="submit">{{( pgettext "Update" "action" )}}</button>
+                <button formnovalidate name="action" value="products"
+                        type="submit">{{( pgettext "Add products" "action" )}}</button>
+                <button formnovalidate name="action" value="update"
+                        type="submit">{{( pgettext "Update" "action" )}}</button>
                 <button class="primary" name="action" value="add"
                         type="submit">{{( pgettext "New invoice" "action" )}}</button>
             </fieldset>