How to Create a Custom Lead Edit Form

composer require bitrix24/b24phpsdk:"^3.0"
        

pip install b24pysdk flask
        

php -S localhost:8000
        

python app.py
        

<?php
            // composer require bitrix24/b24phpsdk:"^3.0"
            require_once 'vendor/autoload.php';
        
            use Bitrix24\SDK\Services\ServiceBuilderFactory;
            use Symfony\Component\EventDispatcher\EventDispatcher;
            use Psr\Log\NullLogger;
        
            $sb = (new ServiceBuilderFactory(new EventDispatcher(), new NullLogger()))
                ->initFromWebhook('https://your-domain.bitrix24.com/rest/USER_ID/TOKEN/');
            $crm = $sb->getCRMScope();
        
            const ENTITY_TYPE_ID = 1;
            $ID = (int)($_REQUEST['ID'] ?? 0);
        
            function callCore($sb, string $method, array $params): array
            {
                return $sb->core->call($method, $params)->getResponseData()->getResult();
            }
        
            function esc($value): string
            {
                return htmlspecialchars((string)$value, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
            }
        
            function inputField(array $params): string
            {
                $values = !empty($params['MULTIPLE'])
                    ? array_merge((array)($params['VALUE'] ?? []), [''])
                    : [$params['VALUE'] ?? ''];
                $html = '';
                foreach ($values as $index => $value)
                {
                    $html .= '<input class="form-control" name="' . esc($params['NAME']) . (!empty($params['MULTIPLE']) ? '[]' : '') . '"';
                    $html .= ' type="' . esc($params['TYPE'] ?? 'text') . '"';
                    $html .= !empty($params['STEP']) ? ' step="' . esc($params['STEP']) . '"' : '';
                    $html .= !empty($params['REQUIRED']) && $index === 0 ? ' required' : '';
                    $html .= !empty($params['DISABLE']) ? ' disabled' : '';
                    $html .= !empty($params['CHECKED']) ? ' checked' : '';
                    $html .= ' value="' . esc($value) . '">';
                }
                return $html;
            }
        
            function selectField(array $params, array $options): string
            {
                $html = '<select class="form-control" name="' . esc($params['NAME']) . (!empty($params['MULTIPLE']) ? '[]' : '') . '"';
                $html .= !empty($params['REQUIRED']) ? ' required' : '';
                $html .= !empty($params['DISABLE']) ? ' disabled' : '';
                $html .= !empty($params['MULTIPLE']) ? ' multiple' : '';
                $html .= '>';
                if (empty($params['REQUIRED']) && empty($params['MULTIPLE']))
                {
                    $html .= '<option value="">-- Not selected --</option>';
                }
                $selectedValues = array_map('strval', (array)($params['VALUE'] ?? []));
                foreach ($options as $key => $title)
                {
                    $selected = in_array((string)$key, $selectedValues, true) ? ' selected' : '';
                    $html .= '<option value="' . esc($key) . '"' . $selected . '>' . esc($title) . '</option>';
                }
                return $html . '</select>';
            }
        
            function multifields($values): string
            {
                $rows = is_array($values) ? $values : [];
                for ($i = 0; $i < 3; $i++)
                {
                    $rows[] = ['id' => '', 'typeId' => 'PHONE', 'valueType' => 'WORK', 'value' => ''];
                }
                $html = '';
                foreach ($rows as $index => $row)
                {
                    $options = '';
                    foreach (['PHONE', 'EMAIL', 'WEB', 'IM'] as $type)
                    {
                        $selected = ($row['typeId'] ?? '') === $type ? ' selected' : '';
                        $options .= '<option value="' . $type . '"' . $selected . '>' . $type . '</option>';
                    }
                    $id = $row['id'] ?? '';
                    $html .= '<div class="border rounded p-2 mb-2">';
                    $html .= '<input type="hidden" name="fm[' . $index . '][id]" value="' . esc($id) . '">';
                    $html .= '<select class="form-control mb-1" name="fm[' . $index . '][typeId]">' . $options . '</select>';
                    $html .= '<input class="form-control mb-1" name="fm[' . $index . '][valueType]" value="' . esc($row['valueType'] ?? 'WORK') . '" placeholder="WORK">';
                    $html .= '<input class="form-control mb-1" name="fm[' . $index . '][value]" value="' . esc($row['value'] ?? '') . '" placeholder="Value">';
                    if ($id)
                    {
                        $html .= '<label><input type="checkbox" name="fm[' . $index . '][delete]" value="Y"> Delete</label>';
                    }
                    $html .= '</div>';
                }
                return $html;
            }
        
            $fieldResult = callCore($sb, 'crm.item.fields', [
                'entityTypeId' => ENTITY_TYPE_ID,
                'useOriginalUfNames' => 'Y',
            ]);
            $fields = $fieldResult['fields'];
            $currencies = [];
            foreach ($crm->currency()->list([])->getCurrencies() as $currency)
            {
                $currencies[$currency->CURRENCY->getCode()] = $currency->FULL_NAME;
            }
            $item = [];
            if ($ID > 0)
            {
                $item = callCore($sb, 'crm.item.get', [
                    'entityTypeId' => ENTITY_TYPE_ID,
                    'id' => $ID,
                    'useOriginalUfNames' => 'Y',
                ])['item'];
            }
        
            $standard = '';
            $custom = '';
            foreach ($fields as $key => $field)
            {
                if (in_array($key, ['contactId', 'contacts'], true)) continue;
                $value = $item[$key] ?? '';
                $params = [
                    'NAME' => 'form[' . $key . ']', 'VALUE' => $value,
                    'REQUIRED' => $field['isRequired'], 'DISABLE' => $field['isReadOnly'], 'MULTIPLE' => $field['isMultiple'],
                ];
                $control = '';
        
                if ($field['type'] === 'crm_status')
                {
                    $options = [];
                    foreach ($crm->status()->list([], ['ENTITY_ID' => $field['statusType']], [])->getStatuses() as $status)
                    {
                        $options[$status->STATUS_ID] = $status->NAME;
                    }
                    $control = selectField($params, $options);
                }
                elseif ($field['type'] === 'crm_currency')
                {
                    $control = selectField($params, $currencies);
                }
                elseif ($field['type'] === 'enumeration')
                {
                    $options = [];
                    foreach ($field['items'] ?? [] as $row)
                    {
                        $options[$row['ID'] ?? $row['id']] = $row['VALUE'] ?? $row['value'];
                    }
                    $control = selectField($params, $options);
                }
                elseif ($field['type'] === 'crm_multifield')
                {
                    $control = multifields($value);
                }
                elseif ($field['type'] === 'crm_company')
                {
                    $control = inputField(['TYPE' => 'number'] + $params);
                    if ($value)
                    {
                        $company = $crm->item()->get(4, (int)$value)->item();
                        $control .= ' (' . esc($company->title) . ')';
                    }
                }
                elseif ($field['type'] === 'crm_contact')
                {
                    $control = inputField(['TYPE' => 'number'] + $params);
                    $ids = array_values(array_filter(array_map('intval', (array)$value)));
                    if ($ids)
                    {
                        $names = [];
                        foreach ($crm->item()->list(3, [], ['@id' => $ids], ['id', 'name', 'lastName'], 0)->getItems() as $contact)
                        {
                            $names[] = trim($contact->name . ' ' . $contact->lastName);
                        }
                        $control .= ' (' . esc(implode(', ', $names)) . ')';
                    }
                }
                elseif ($field['type'] === 'user')
                {
                    $control = inputField(['TYPE' => 'number'] + $params);
                    if ($value)
                    {
                        $names = [];
                        foreach ($sb->getUserScope()->user()->get([], ['ID' => $value], true)->getUsers() as $user)
                        {
                            $names[] = trim($user->NAME . ' ' . $user->LAST_NAME);
                        }
                        $control .= ' (' . esc(implode(', ', $names)) . ')';
                    }
                }
                elseif (in_array($field['type'], ['file', 'resourcebooking'], true))
                {
                    $control = 'Type ' . esc($field['type']) . ' not supported in this example';
                }
                elseif ($field['type'] === 'date')
                {
                    $formatted = $value ? substr((string)$value, 0, 10) : '';
                    $control = inputField(['TYPE' => 'date', 'VALUE' => $formatted] + $params);
                }
                elseif ($field['type'] === 'datetime')
                {
                    $formatted = $value
                        ? (new DateTimeImmutable((string)$value))->format('Y-m-d\TH:i:s')
                        : '';
                    $control = inputField(['TYPE' => 'datetime-local', 'VALUE' => $formatted] + $params);
                }
                elseif (in_array($field['type'], ['boolean', 'char'], true))
                {
                    $control = inputField(['TYPE' => 'checkbox', 'VALUE' => 'Y', 'CHECKED' => $value === 'Y', 'REQUIRED' => false] + $params);
                }
                elseif (in_array($field['type'], ['integer', 'double'], true))
                {
                    $control = inputField(['TYPE' => 'number', 'STEP' => $field['type'] === 'double' ? 'any' : ''] + $params);
                }
                elseif ($field['type'] === 'money')
                {
                    [$amount, $currency] = array_pad(explode('|', (string)$value, 2), 2, '');
                    $control = inputField(['TYPE' => 'number', 'STEP' => 'any', 'VALUE' => $amount] + $params);
                    $control .= selectField(['NAME' => 'form[' . $key . '_CURRENCY]', 'VALUE' => $currency] + $params, $currencies);
                }
                else
                {
                    $control = inputField($params + ['TYPE' => 'text']);
                }
        
                $label = esc($field['formLabel'] ?? $field['title'] ?? $key);
                $block = '<div class="col-4 mt-3">' . $label . ': </div><div class="col-6 mt-3">' . $control . '</div>';
                if (str_starts_with($key, 'UF_')) $custom .= $block;
                else $standard .= $block;
            }
        ?>
            <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" crossorigin="anonymous">
            <div class="container">
                <form id="auto_form" method="post">
                    <?php if (!empty($item['id'])): ?>
                        <input type="hidden" name="form[id]" value="<?= esc($item['id']) ?>">
                    <?php endif; ?>
                    <h2>System fields</h2><div class="row"><?= $standard ?></div>
                    <h2>Custom fields</h2><div class="row"><?= $custom ?></div>
                    <div class="row"><div class="col-sm-10 mt-5"><input type="submit" class="btn btn-primary" value="Save"></div></div>
                </form>
            </div>
            <script>
                document.getElementById('auto_form').addEventListener('submit', async (event) => {
                    event.preventDefault();
                    const body = new URLSearchParams(new FormData(event.currentTarget));
                    const response = await fetch('auto_form.php', { method: 'POST', body });
                    const json = await response.json();
                    alert(json.message || json.error);
                });
            </script>
        

# pip install b24pysdk flask
        from html import escape
        
        from flask import Flask, request
        from b24pysdk import BitrixWebhook, Client
        
        from save_form import save_form
        
        app = Flask(__name__)
        ENTITY_TYPE_ID = 1
        SKIPPED_FIELDS = {"contactId", "contacts"}
        client = Client(BitrixWebhook(
            domain="your-domain.bitrix24.com",
            webhook_token="USER_ID/TOKEN",
        ))
        
        def value_or_empty(value):
            return "" if value is None else value
        
        def input_field(params):
            value = params.get("VALUE")
            values = (
                [*(value if isinstance(value, list) else [value_or_empty(value)]), ""]
                if params.get("MULTIPLE") else [value_or_empty(value)]
            )
            html = ""
            for index, value in enumerate(values):
                html += f'<input class="form-control" name="{escape(params["NAME"])}{"[]" if params.get("MULTIPLE") else ""}"'
                html += f' type="{escape(params.get("TYPE", "text"))}"'
                if params.get("STEP"):
                    html += f' step="{escape(params["STEP"])}"'
                if params.get("REQUIRED") and index == 0:
                    html += " required"
                if params.get("DISABLE"):
                    html += " disabled"
                if params.get("CHECKED"):
                    html += " checked"
                html += f' value="{escape(str(value))}">'
            return html
        
        def select_field(params, options):
            html = f'<select class="form-control" name="{escape(params["NAME"])}{"[]" if params.get("MULTIPLE") else ""}"'
            if params.get("REQUIRED"):
                html += " required"
            if params.get("DISABLE"):
                html += " disabled"
            if params.get("MULTIPLE"):
                html += " multiple"
            html += ">"
            if not params.get("REQUIRED") and not params.get("MULTIPLE"):
                html += '<option value="">-- Not selected --</option>'
            value = params.get("VALUE")
            selected_values = value if isinstance(value, list) else [value_or_empty(value)]
            selected_values = [str(value) for value in selected_values]
            for key, title in options.items():
                selected = " selected" if str(key) in selected_values else ""
                html += f'<option value="{escape(str(key))}"{selected}>{escape(str(title))}</option>'
            return html + "</select>"
        
        def multifields(values):
            rows = list(values) if isinstance(values, list) else []
            rows.extend({"id": "", "typeId": "PHONE", "valueType": "WORK", "value": ""} for _ in range(3))
            html = ""
            for index, row in enumerate(rows):
                options = "".join(
                    f'<option value="{field_type}"{" selected" if row.get("typeId") == field_type else ""}>{field_type}</option>'
                    for field_type in ("PHONE", "EMAIL", "WEB", "IM")
                )
                item_id = row.get("id") or ""
                delete = (
                    f'<label><input type="checkbox" name="fm[{index}][delete]" value="Y"> Delete</label>'
                    if item_id else ""
                )
                html += f"""<div class="border rounded p-2 mb-2">
                    <input type="hidden" name="fm[{index}][id]" value="{escape(str(item_id))}">
                    <select class="form-control mb-1" name="fm[{index}][typeId]">{options}</select>
                    <input class="form-control mb-1" name="fm[{index}][valueType]" value="{escape(row.get('valueType') or 'WORK')}" placeholder="WORK">
                    <input class="form-control mb-1" name="fm[{index}][value]" value="{escape(row.get('value') or '')}" placeholder="Value">
                    {delete}
                </div>"""
            return html
        
        PAGE = """
            <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" crossorigin="anonymous">
            <div class="container"><form id="auto_form" method="post">
                %(hidden_id)s
                <h2>System fields</h2><div class="row">%(standard)s</div>
                <h2>Custom fields</h2><div class="row">%(custom)s</div>
                <div class="row"><div class="col-sm-10 mt-5"><input type="submit" class="btn btn-primary" value="Save"></div></div>
            </form></div>
            <script>
                document.getElementById('auto_form').addEventListener('submit', async (event) => {
                    event.preventDefault();
                    const body = new URLSearchParams(new FormData(event.currentTarget));
                    const response = await fetch('/form', { method: 'POST', body });
                    const json = await response.json();
                    alert(json.message || json.error);
                });
            </script>
        """
        
        @app.route("/")
        def form_page():
            raw_id = request.args.get("ID", "0")
            try:
                item_id = int(raw_id)
            except ValueError:
                return "The ID parameter must be an integer", 400
        
            fields = client.crm.item.fields(
                entity_type_id=ENTITY_TYPE_ID,
                use_original_uf_names=True,
            ).response.result["fields"]
            currencies = client.crm.currency.list().response.result
            item = {}
            if item_id > 0:
                item = client.crm.item.get(
                    entity_type_id=ENTITY_TYPE_ID,
                    bitrix_id=item_id,
                    use_original_uf_names=True,
                ).response.result["item"]
        
            standard = ""
            custom = ""
            for key, field in fields.items():
                if key in SKIPPED_FIELDS:
                    continue
                value = value_or_empty(item.get(key))
                params = {
                    "NAME": f"form[{key}]", "VALUE": value,
                    "REQUIRED": field.get("isRequired"), "DISABLE": field.get("isReadOnly"), "MULTIPLE": field.get("isMultiple"),
                }
                field_type = field.get("type")
                control = ""
        
                if field_type == "crm_status":
                    rows = client.crm.status.list(filter={"ENTITY_ID": field["statusType"]}).response.result
                    control = select_field(params, {row["STATUS_ID"]: row["NAME"] for row in rows})
                elif field_type == "crm_currency":
                    control = select_field(params, {row["CURRENCY"]: row["FULL_NAME"] for row in currencies})
                elif field_type == "enumeration":
                    options = {
                        row.get("ID", row.get("id")): row.get("VALUE", row.get("value"))
                        for row in field.get("items", [])
                    }
                    control = select_field(params, options)
                elif field_type == "crm_multifield":
                    control = multifields(value)
                elif field_type == "crm_company":
                    control = input_field({**params, "TYPE": "number"})
                    if value:
                        company = client.crm.item.get(entity_type_id=4, bitrix_id=int(value)).response.result["item"]
                        control += f" ({escape(company['title'])})"
                elif field_type == "crm_contact":
                    control = input_field({**params, "TYPE": "number"})
                    ids = [int(contact_id) for contact_id in (value if isinstance(value, list) else [value]) if contact_id]
                    if ids:
                        contacts = client.crm.item.list(
                            entity_type_id=3,
                            filter={"@id": ids},
                            select=["id", "name", "lastName"],
                        ).response.result["items"]
                        names = [" ".join(filter(None, [row.get("name"), row.get("lastName")])) for row in contacts]
                        control += f" ({escape(', '.join(names))})"
                elif field_type == "user":
                    control = input_field({**params, "TYPE": "number"})
                    if value:
                        users = client.user.get(filter={"ID": value}).response.result
                        names = [" ".join(filter(None, [row.get("NAME"), row.get("LAST_NAME")])) for row in users]
                        control += f" ({escape(', '.join(names))})"
                elif field_type in ("file", "resourcebooking"):
                    control = f"Type {escape(field_type)} is not supported in this example"
                elif field_type == "date":
                    control = input_field({**params, "VALUE": str(value)[:10] if value else "", "TYPE": "date"})
                elif field_type == "datetime":
                    control = input_field({**params, "VALUE": str(value)[:19] if value else "", "TYPE": "datetime-local"})
                elif field_type in ("boolean", "char"):
                    control = input_field({**params, "REQUIRED": False, "VALUE": "Y", "CHECKED": value == "Y", "TYPE": "checkbox"})
                elif field_type in ("integer", "double"):
                    control = input_field({**params, "TYPE": "number", "STEP": "any" if field_type == "double" else ""})
                elif field_type == "money":
                    amount, _, currency = str(value).partition("|")
                    control = input_field({**params, "VALUE": amount, "TYPE": "number", "STEP": "any"})
                    control += select_field(
                        {**params, "NAME": f"form[{key}_CURRENCY]", "VALUE": currency},
                        {row["CURRENCY"]: row["FULL_NAME"] for row in currencies},
                    )
                else:
                    control = input_field({**params, "TYPE": "text"})
        
                label = escape(str(field.get("formLabel") or field.get("title") or key))
                block = f'<div class="col-4 mt-3">{label}: </div><div class="col-6 mt-3">{control}</div>'
                if key.startswith("UF_"):
                    custom += block
                else:
                    standard += block
        
            hidden_id = f'<input type="hidden" name="form[id]" value="{escape(str(item["id"]))}">' if item.get("id") else ""
            return PAGE % {"hidden_id": hidden_id, "standard": standard, "custom": custom}
        
        app.add_url_rule("/form", view_func=save_form, methods=["POST"])
        
        if __name__ == "__main__":
            app.run(port=5000)
        

<?php
            // composer require bitrix24/b24phpsdk:"^3.0"
            require_once 'vendor/autoload.php';
        
            use Bitrix24\SDK\Services\ServiceBuilderFactory;
            use Symfony\Component\EventDispatcher\EventDispatcher;
            use Psr\Log\NullLogger;
        
            $sb = (new ServiceBuilderFactory(new EventDispatcher(), new NullLogger()))
                ->initFromWebhook('https://your-domain.bitrix24.com/rest/USER_ID/TOKEN/');
            const ENTITY_TYPE_ID = 1;
            header('Content-Type: application/json; charset=utf-8');
        
            function callCore($sb, string $method, array $params): array
            {
                return $sb->core->call($method, $params)->getResponseData()->getResult();
            }
        
            function buildMultifields(array $rows): array
            {
                $result = [];
                $newIndex = 0;
                foreach ($rows as $row)
                {
                    $id = (int)($row['id'] ?? 0);
                    $value = (string)($row['value'] ?? '');
                    $shouldDelete = ($row['delete'] ?? '') === 'Y' || $value === '';
                    if ($id <= 0 && $shouldDelete) continue;
                    $key = $id > 0 ? (string)$id : 'n' . $newIndex++;
                    $result[$key] = [
                        'typeId' => (string)($row['typeId'] ?? 'PHONE'),
                        'valueType' => (string)($row['valueType'] ?? 'WORK'),
                        'value' => $shouldDelete ? '' : $value,
                    ];
                }
                return $result;
            }
        
            try
            {
                $submitted = is_array($_POST['form'] ?? null) ? $_POST['form'] : [];
                $fieldResult = callCore($sb, 'crm.item.fields', [
                    'entityTypeId' => ENTITY_TYPE_ID,
                    'useOriginalUfNames' => 'Y',
                ]);
                $fields = [];
                foreach ($fieldResult['fields'] as $key => $prop)
                {
                    if (in_array($key, ['contactId', 'contacts'], true)
                        || !empty($prop['isReadOnly'])
                        || in_array($prop['type'], ['file', 'resourcebooking'], true))
                    {
                        continue;
                    }
                    if (in_array($prop['type'], ['boolean', 'char'], true))
                    {
                        $fields[$key] = array_key_exists($key, $submitted) ? 'Y' : 'N';
                        continue;
                    }
                    if ($prop['type'] === 'crm_multifield')
                    {
                        $fields[$key] = buildMultifields(is_array($_POST['fm'] ?? null) ? $_POST['fm'] : []);
                        continue;
                    }
                    if (!array_key_exists($key, $submitted))
                    {
                        $fields[$key] = !empty($prop['isMultiple']) ? [] : '';
                        continue;
                    }
        
                    $value = $submitted[$key];
                    if ($prop['type'] === 'money')
                    {
                        $value = (string)$value . '|' . (string)($submitted[$key . '_CURRENCY'] ?? '');
                    }
                    elseif ($prop['type'] === 'crm_company')
                    {
                        $value = (int)$value;
                    }
                    elseif ($prop['type'] === 'crm_contact')
                    {
                        $value = array_values(array_filter(array_map('intval', (array)$value)));
                    }
                    elseif (!empty($prop['isMultiple']))
                    {
                        $value = array_values(array_filter((array)$value, static fn($item) => $item !== ''));
                    }
                    $fields[$key] = $value;
                }
        
                $id = (int)($submitted['id'] ?? 0);
                $method = $id > 0 ? 'crm.item.update' : 'crm.item.add';
                $params = [
                    'entityTypeId' => ENTITY_TYPE_ID,
                    'fields' => $fields,
                    'useOriginalUfNames' => 'Y',
                ];
                if ($id > 0) $params['id'] = $id;
                $result = callCore($sb, $method, $params);
                echo json_encode(['message' => 'Lead saved, ID: ' . $result['item']['id']], JSON_UNESCAPED_UNICODE);
            }
            catch (Throwable $error)
            {
                http_response_code(400);
                echo json_encode(['error' => $error->getMessage()], JSON_UNESCAPED_UNICODE);
            }
        

# pip install b24pysdk flask
        import re
        
        from flask import jsonify, request
        from b24pysdk import BitrixWebhook, Client
        
        ENTITY_TYPE_ID = 1
        SKIPPED_FIELDS = {"contactId", "contacts"}
        client = Client(BitrixWebhook(
            domain="your-domain.bitrix24.com",
            webhook_token="USER_ID/TOKEN",
        ))
        
        def values_for(name):
            return request.form.getlist(name) or request.form.getlist(f"{name}[]")
        
        def build_multifields():
            rows = {}
            pattern = re.compile(r"^fm\[(\d+)]\[(id|typeId|valueType|value|delete)]$")
            for full_key in request.form:
                match = pattern.match(full_key)
                if match:
                    rows.setdefault(match.group(1), {})[match.group(2)] = request.form[full_key]
        
            result = {}
            new_index = 0
            for row in rows.values():
                item_id = int(row.get("id") or 0)
                value = row.get("value", "")
                should_delete = row.get("delete") == "Y" or value == ""
                if not item_id and should_delete:
                    continue
                key = str(item_id) if item_id else f"n{new_index}"
                if not item_id:
                    new_index += 1
                result[key] = {
                    "typeId": row.get("typeId") or "PHONE",
                    "valueType": row.get("valueType") or "WORK",
                    "value": "" if should_delete else value,
                }
            return result
        
        def save_form():
            try:
                submitted = {}
                for full_key in request.form:
                    match = re.match(r"^form\[([^]]+)](\[\])?$", full_key)
                    if match:
                        submitted[match.group(1)] = values_for(full_key) if match.group(2) else request.form[full_key]
        
                field_result = client.crm.item.fields(
                    entity_type_id=ENTITY_TYPE_ID,
                    use_original_uf_names=True,
                ).response.result
                fields = {}
                for key, prop in field_result["fields"].items():
                    if key in SKIPPED_FIELDS or prop.get("isReadOnly") or prop.get("type") in ("file", "resourcebooking"):
                        continue
                    field_type = prop.get("type")
                    if field_type in ("boolean", "char"):
                        fields[key] = "Y" if key in submitted else "N"
                        continue
                    if field_type == "crm_multifield":
                        fields[key] = build_multifields()
                        continue
                    if key not in submitted:
                        fields[key] = [] if prop.get("isMultiple") else ""
                        continue
        
                    value = submitted[key]
                    if field_type == "money":
                        value = f"{value}|{submitted.get(f'{key}_CURRENCY', '')}"
                    elif field_type == "crm_company":
                        value = int(value or 0)
                    elif field_type == "crm_contact":
                        value = [int(item_id) for item_id in (value if isinstance(value, list) else [value]) if item_id]
                    elif prop.get("isMultiple"):
                        value = [item for item in (value if isinstance(value, list) else [value]) if item != ""]
                    fields[key] = value
        
                item_id = int(submitted.get("id") or 0)
                if item_id > 0:
                    result = client.crm.item.update(
                        entity_type_id=ENTITY_TYPE_ID,
                        bitrix_id=item_id,
                        fields=fields,
                        use_original_uf_names=True,
                    ).response.result
                else:
                    result = client.crm.item.add(
                        entity_type_id=ENTITY_TYPE_ID,
                        fields=fields,
                        use_original_uf_names=True,
                    ).response.result
                return jsonify(message=f"Lead saved, ID: {result['item']['id']}")
            except Exception as error:
                return jsonify(error=str(error)), 400