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</li></ul></nav></div></div></aside><main class="docMainContainer_TBSr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Components reference</span></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Core components</span></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Processing</span></li><li class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link">Type Convert</span></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Type Convert</h1></header><style>[data-ch-theme="github-dark"] { --ch-t-colorScheme: dark;--ch-t-foreground: #c9d1d9;--ch-t-background: #0d1117;--ch-t-lighter-inlineBackground: #0d1117e6;--ch-t-editor-background: #0d1117;--ch-t-editor-foreground: #c9d1d9;--ch-t-editor-lineHighlightBackground: #6e76811a;--ch-t-editor-rangeHighlightBackground: #ffffff0b;--ch-t-editor-infoForeground: #3794FF;--ch-t-editor-selectionBackground: #264F78;--ch-t-focusBorder: #1f6feb;--ch-t-tab-activeBackground: #0d1117;--ch-t-tab-activeForeground: #c9d1d9;--ch-t-tab-inactiveBackground: #010409;--ch-t-tab-inactiveForeground: #8b949e;--ch-t-tab-border: #30363d;--ch-t-tab-activeBorder: #0d1117;--ch-t-editorGroup-border: #30363d;--ch-t-editorGroupHeader-tabsBackground: #010409;--ch-t-editorLineNumber-foreground: #6e7681;--ch-t-input-background: #0d1117;--ch-t-input-foreground: #c9d1d9;--ch-t-input-border: #30363d;--ch-t-icon-foreground: #8b949e;--ch-t-sideBar-background: #010409;--ch-t-sideBar-foreground: #c9d1d9;--ch-t-sideBar-border: #30363d;--ch-t-list-activeSelectionBackground: #6e768166;--ch-t-list-activeSelectionForeground: #c9d1d9;--ch-t-list-hoverBackground: #6e76811a;--ch-t-list-hoverForeground: #c9d1d9; }</style>
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<!-- -->
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<p>The <strong>Type Convert</strong> component converts data from one type to another.
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It supports <code>Data</code>, <code>DataFrame</code>, and <code>Message</code> data types.</p>
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<div class="theme-tabs-container tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">Data</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">DataFrame</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">Message</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><p>A <code>Data</code> object is a structured object that contains a primary <code>text</code> key and other key-value pairs:</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>"data": {</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "text": "User Profile",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "name": "Charlie Lastname",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "age": 28,</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "email": "charlie.lastname@example.com"</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>},</span></div></div><br></code></div></div><p>The larger context associated with a component's <code>data</code> dictionary also identifies which key is the primary <code>text_key</code>, and it can provide an optional default value if the primary key isn't specified.
|
||
For example:</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>{</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "text_key": "text",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "data": {</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "text": "User Profile",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "name": "Charlie Lastname",</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "age": 28,</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "email": "charlie.lastname@example.com"</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> },</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span> "default_value": ""</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>}</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p>A <code>DataFrame</code> is an array that represents a tabular data structure with rows and columns.</p><p>It consists of a list (array) of dictionary objects, where each dictionary represents a row.
|
||
Each key in the dictionaries corresponds to a column name.
|
||
For example, the following <code>DataFrame</code> contains two rows with columns for <code>name</code>, <code>age</code>, and <code>email</code>:</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span>[</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> {</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> "name": "Charlie Lastname",</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> "age": 28,</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> "email": "charlie.lastname@example.com"</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> },</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> {</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> "name": "Bobby Othername",</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> "age": 25,</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> "email": "bobby.othername@example.com"</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span> }</span></div></div><div><span class="ch-code-line-number">_<!-- -->12</span><div style="display:inline-block;margin-left:16px"><span>]</span></div></div><br></code></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><p>A <code>Message</code> is primarily for passing a <code>text</code> string, such as<code>"Name: Charlie Lastname, Age: 28, Email: charlie.lastname@example.com"</code>.
|
||
However, the entire <code>Message</code> object can include metadata about the message, particularly when used as chat input or output.</p></div></div></div>
|
||
<p>For more information, see <a class="" href="/data-types">Langflow data types</a>.</p>
|
||
<h2 class="anchor anchorTargetHideOnScrollNavbar_vjPI" id="use-the-type-convert-component-in-a-flow">Use the Type Convert component in a flow<a href="#use-the-type-convert-component-in-a-flow" class="hash-link" aria-label="Direct link to Use the Type Convert component in a flow" title="Direct link to Use the Type Convert component in a flow" translate="no"></a></h2>
|
||
<p>The <strong>Type Convert</strong> component is typically used to transform data into a format required by a downstream component.
|
||
For example, if a component outputs a <code>Message</code>, but the following component requires <code>Data</code>, then you can use the <strong>Type Convert</strong> component to reformat the <code>Message</code> as <code>Data</code> before passing it to the downstream component.</p>
|
||
<p>The following example uses the <strong>Type Convert</strong> component to convert the <code>DataFrame</code> output from a <strong>Web Search</strong> component into <code>Message</code> data that is passed as text input for an LLM:</p>
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||
<ol>
|
||
<li class="">
|
||
<p>Create a flow based on the <strong>Basic prompting</strong> template.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Add a <strong>Web Search</strong> component to the flow, and then enter a search query, such as <code>environmental news</code>.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>In the <strong>Prompt Template</strong> component, replace the contents of the <strong>Template</strong> field with the following text:</p>
|
||
<div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>Answer the user's question using the {context}</span></div></div><br></code></div></div>
|
||
<p>The curly braces define a <a class="" href="/components-prompts#define-variables-in-prompts">prompt variable</a> that becomes an input field on the <strong>Prompt Template</strong> component.
|
||
In this example, you will use the <strong>context</strong> field to pass the search results into the template, as explained in the next steps.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Add a <strong>Type Convert</strong> component to the flow, and then set the <strong>Output Type</strong> to <strong>Message</strong>.</p>
|
||
<p>Because the <strong>Web Search</strong> component's <code>DataFrame</code> output is incompatible with the <strong>context</strong> variable's <code>Message</code> input, you must use the <strong>Type Convert</strong> component to change the <code>DataFrame</code> to a <code>Message</code> in order to pass the search results to the <strong>Prompt Template</strong> component.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Connect the additional components to the rest of the flow:</p>
|
||
<ul>
|
||
<li class="">Connect the <strong>Web Search</strong> component's output to the <strong>Type Convert</strong> component's input.</li>
|
||
<li class="">Connect the <strong>Type Convert</strong> component's output to the <strong>Prompt Template</strong> component's <strong>context</strong> input.</li>
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||
</ul>
|
||
<p><img decoding="async" loading="lazy" alt="Convert web search output to text input" src="/assets/images/component-type-convert-and-web-search-39a09775930134090eb60ff7f536b70e.png" width="4000" height="1806" class="img_ev3q"></p>
|
||
</li>
|
||
<li class="">
|
||
<p>In the <strong>Language Model</strong> component, add your OpenAI API key.</p>
|
||
<p>If you want to use a different provider or model, edit the <strong>Model Provider</strong>, <strong>Model Name</strong>, and <strong>API Key</strong> fields accordingly.</p>
|
||
</li>
|
||
<li class="">
|
||
<p>Click <strong>Playground</strong>, and then ask something relevant to your search query, such as <code>latest news</code> or <code>what's the latest research on the environment?</code>.</p>
|
||
<details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>Result</summary><div><div class="collapsibleContent_i85q"><p>The LLM uses the search results context, your chat message, and it's built-in training data to respond to your question.
|
||
For example:</p><div class="ch-codeblock not-prose" data-ch-theme="github-dark"><div class="ch-code-wrapper ch-code" data-ch-measured="false"><code class="ch-code-scroll-parent"><br><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>Here are some of the latest news articles related to the environment:</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>Ozone Pollution and Global Warming: A recent study highlights that ozone pollution is a significant global environmental concern, threatening human health and crop production while exacerbating global warming. Read more</span></div></div><div><span class="ch-code-line-number">_<!-- -->10</span><div style="display:inline-block;margin-left:16px"><span>...</span></div></div><br></code></div></div></div></div></details>
|
||
</li>
|
||
</ol>
|
||
<h2 class="anchor anchorTargetHideOnScrollNavbar_vjPI" id="type-convert-parameters">Type Convert parameters<a href="#type-convert-parameters" class="hash-link" aria-label="Direct link to Type Convert parameters" title="Direct link to Type Convert parameters" translate="no"></a></h2>
|
||
<table><thead><tr><th>Name</th><th>Display Name</th><th>Info</th></tr></thead><tbody><tr><td>input_data</td><td>Input Data</td><td>Input parameter. The data to convert. Accepts <code>Data</code>, <code>DataFrame</code>, or <code>Message</code> input.</td></tr><tr><td>output_type</td><td>Output Type</td><td>Input parameter. The desired output type, as one of <strong>Data</strong>, <strong>DataFrame</strong> or <strong>Message</strong>.</td></tr><tr><td>output</td><td>Output</td><td>Output parameter. The converted data in the specified format. The output port changes depending on the selected <strong>Output Type</strong>.</td></tr></tbody></table></div></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/split-text"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Split Text</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/api-request"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">API Request</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#use-the-type-convert-component-in-a-flow" class="table-of-contents__link toc-highlight">Use the Type Convert component in a flow</a></li><li><a href="#type-convert-parameters" class="table-of-contents__link toc-highlight">Type Convert parameters</a></li></ul></div></div></div></div></main></div></div></div><footer class="theme-layout-footer footer"><div class="container container-fluid"><div class="row footer__links"><div class="theme-layout-footer-column col footer__col"><div class="footer__title"></div><ul class="footer__items clean-list"><li class="footer__item"><div class="footer-links">
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