# Cookie Parameter Models { #cookie-parameter-models }

If you have a group of **cookies** that are related, you can create a **Pydantic model** to declare them. 🍪

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

/// tip

In that case, you can simply swap the standard `dataclasses` with `pydantic.dataclasses`, which is a drop-in replacement:

{* ../../docs_src/dataclasses/tutorial003.py hl[1,5,8:11,14:17,23:25,28] *}

1. We still import `field` from standard `dataclasses`.

2. `pydantic.dataclasses` is a drop-in replacement for `dataclasses`.

3. The `Author` dataclass includes a list of `Item` dataclasses.

		t.Fatalf("Failed to drop view, got %v", err)
	}

	query = DB.Model(&User{}).Where("age > ?", 20)
	if err := DB.Migrator().CreateView("users_view", gorm.ViewOption{Query: query}); err != nil {
		t.Fatalf("Failed to crate view, got %v", err)
	}
	if err := DB.Migrator().DropView("users_view"); err != nil {
		t.Fatalf("Failed to drop view, got %v", err)
	}
}

{% endfor %}
{% endif %}

{% endif %}

### Individual Sponsors

{% if github_sponsors %}
{% for group in github_sponsors.sponsors %}

<div class="user-list user-list-center">

{% for user in group %}
{% if user.login not in sponsors_badge.logins %}

            if (prevHyphen > 0) {
                Matcher m = Artifact.VERSION_FILE_PATTERN.matcher(version);
                if (m.matches()) {
                    return m.group(1) + "-" + Artifact.SNAPSHOT_VERSION;
                }
            }
        }
        return version;
    }

    public static String versionlessKey(Artifact artifact) {

										</c:if>
									</c:forEach>
								</p>
							</div>
						</c:if>
						<div class="clearfix searchButtonBox btn-group">
							<button type="submit" name="search" id="searchButton"
								class="btn btn-primary">
								<em class="fa fa-search">
								<la:message key="labels.index_form_search_btn" />
							</button>

# Header Parameter Models { #header-parameter-models }

If you have a group of related **header parameters**, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

                                    </c:if>
                                </h3>
                                <div class="card-tools">
                                    <div class="btn-group">
                                        <la:link href="/admin/elevateword"
                                                 styleClass="btn btn-default btn-xs">

                        updater.write("# " + line);
                    }
                    continue;
                }

                final String input = m.group(1).trim();
                final String output = m.group(2).trim();

                if (input == null || output == null) {
                    logger.warn("Failed to parse {} to {}", line, path);
                    if (updater != null) {

yInterface};var Xe="SidebarSearch",Ye="lte.sidebar-search",Ze=n.default.fn[Xe],et="sidebar-search-open",tt="fa-search",at="fa-times",nt="sidebar-search-results",it="list-group",ot='[data-widget="sidebar-search"]',lt=ot+" .form-control",st=ot+" .btn",rt=st+" i",dt=".sidebar-search-results",ft=".sidebar-search-results .list-group",ut={arrowSign:"->",minLength:3,maxResults:7,highlightName:!0,highlightPath:!1,highlightClass:"text-light",notFoundText:"No element found!"},ct=[],ht=function(){function ...