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Scripts
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<p>The script component allows users to specify a sequence of actions to be executed by Home Assistant when turned on. The script component will create an entity for each script and allow them to be controlled via services.</p>
<p>The sequence of actions is specified using the <a href="/getting-started/scripts/">Home Assistant Script Syntax</a>.</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
<span class="s">script</span><span class="pi">:</span>
<span class="s">message_temperature</span><span class="pi">:</span>
<span class="s">sequence</span><span class="pi">:</span>
<span class="c1"># This is Home Assistant Script Syntax</span>
<span class="pi">-</span> <span class="s">service</span><span class="pi">:</span> <span class="s">notify.notify</span>
<span class="s">data_template</span><span class="pi">:</span>
<span class="err"> </span><span class="s">         message</span><span class="pi">:</span> <span class="s">Current temperature is {{ states.sensor.temperature.state }}</span>
</code></pre>
</div>
<p class="note">
Script names (e.g. <code class="highlighter-rouge">message_temperature</code> in the example above) are not allowed to contain dash (minus) characters, i.e. <code class="highlighter-rouge">-</code>.
The preferred way to separate words for better readability is to use underscore (<code class="highlighter-rouge">_</code>) characters.
</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code> <span class="s"> # Turns on the bedroom lights and then the living room lights 1 minute later</span>
<span class="s">wakeup</span><span class="pi">:</span>
<span class="s">alias</span><span class="pi">:</span> <span class="s">Wake Up</span>
<span class="s">sequence</span><span class="pi">:</span>
<span class="c1"># This is Home Assistant Script Syntax</span>
<span class="pi">-</span> <span class="s">event</span><span class="pi">:</span> <span class="s">LOGBOOK_ENTRY</span>
<span class="s">event_data</span><span class="pi">:</span>
<span class="s">name</span><span class="pi">:</span> <span class="s">Paulus</span>
<span class="s">message</span><span class="pi">:</span> <span class="s">is waking up</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">device_tracker.paulus</span>
<span class="s">domain</span><span class="pi">:</span> <span class="s">light</span>
<span class="pi">-</span> <span class="s">alias</span><span class="pi">:</span> <span class="s">Bedroom lights on</span>
<span class="s">service</span><span class="pi">:</span> <span class="s">light.turn_on</span>
<span class="s">data</span><span class="pi">:</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">group.bedroom</span>
<span class="s">brightness</span><span class="pi">:</span> <span class="s">100</span>
<span class="pi">-</span> <span class="s">delay</span><span class="pi">:</span>
<span class="c1"># supports seconds, milliseconds, minutes, hours</span>
<span class="s">minutes</span><span class="pi">:</span> <span class="s">1</span>
<span class="pi">-</span> <span class="s">alias</span><span class="pi">:</span> <span class="s">Living room lights on</span>
<span class="s">service</span><span class="pi">:</span> <span class="s">light.turn_on</span>
<span class="s">data</span><span class="pi">:</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">group.living_room</span>
</code></pre>
</div>
<h3><a class="title-link" name="passing-variables-to-scripts" href="#passing-variables-to-scripts"></a> Passing variables to scripts</h3>
<p>As part of the service, variables can be passed along to a script so they become available within templates in that script.</p>
<p>There are two ways to achieve this. One way is using the generic <code class="highlighter-rouge">script.turn_on</code> service. To pass variables to the script with this service, call it with the desired variables:</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
<span class="s">automation</span><span class="pi">:</span>
<span class="s">trigger</span><span class="pi">:</span>
<span class="s">platform</span><span class="pi">:</span> <span class="s">state</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">light.bedroom</span>
<span class="s">from</span><span class="pi">:</span> <span class="s1">'</span><span class="s">off'</span>
<span class="s">to</span><span class="pi">:</span> <span class="s1">'</span><span class="s">on'</span>
<span class="s">action</span><span class="pi">:</span>
<span class="s">service</span><span class="pi">:</span> <span class="s">script.turn_on</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">script.notify_pushover</span>
<span class="s">data</span><span class="pi">:</span>
<span class="s">variables</span><span class="pi">:</span>
<span class="s">title</span><span class="pi">:</span> <span class="s1">'</span><span class="s">State</span><span class="nv"> </span><span class="s">change'</span>
<span class="s">message</span><span class="pi">:</span> <span class="s1">'</span><span class="s">The</span><span class="nv"> </span><span class="s">light</span><span class="nv"> </span><span class="s">is</span><span class="nv"> </span><span class="s">on!'</span>
</code></pre>
</div>
<p>The other way is calling the script as a service directly. In this case, all service data will be made available as variables. If we apply this approach on the script above, it would look like this:</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
<span class="s">automation</span><span class="pi">:</span>
<span class="s">trigger</span><span class="pi">:</span>
<span class="s">platform</span><span class="pi">:</span> <span class="s">state</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">light.bedroom</span>
<span class="s">from</span><span class="pi">:</span> <span class="s1">'</span><span class="s">off'</span>
<span class="s">to</span><span class="pi">:</span> <span class="s1">'</span><span class="s">on'</span>
<span class="s">action</span><span class="pi">:</span>
<span class="s">service</span><span class="pi">:</span> <span class="s">script.notify_pushover</span>
<span class="s">data</span><span class="pi">:</span>
<span class="s">title</span><span class="pi">:</span> <span class="s1">'</span><span class="s">State</span><span class="nv"> </span><span class="s">change'</span>
<span class="s">message</span><span class="pi">:</span> <span class="s1">'</span><span class="s">The</span><span class="nv"> </span><span class="s">light</span><span class="nv"> </span><span class="s">is</span><span class="nv"> </span><span class="s">on!'</span>
</code></pre>
</div>
<p>Using the variables in the script requires the use of <code class="highlighter-rouge">data_template</code>:</p>
<div class="language-yaml highlighter-rouge"><pre class="highlight"><code><span class="c1"># Example configuration.yaml entry</span>
<span class="s">script</span><span class="pi">:</span>
<span class="s">notify_pushover</span><span class="pi">:</span>
<span class="s">sequence</span><span class="pi">:</span>
<span class="pi">-</span> <span class="s">condition</span><span class="pi">:</span> <span class="s">state</span>
<span class="s">entity_id</span><span class="pi">:</span> <span class="s">switch.pushover_notifications</span>
<span class="s">state</span><span class="pi">:</span> <span class="s1">'</span><span class="s">on'</span>
<span class="pi">-</span> <span class="s">service</span><span class="pi">:</span> <span class="s">notify.pushover</span>
<span class="s">data_template</span><span class="pi">:</span>
<span class="s">title</span><span class="pi">:</span> <span class="s2">"</span><span class="s">{{</span><span class="nv"> </span><span class="s">title</span><span class="nv"> </span><span class="s">}}"</span>
<span class="s">message</span><span class="pi">:</span> <span class="s2">"</span><span class="s">{{</span><span class="nv"> </span><span class="s">message</span><span class="nv"> </span><span class="s">}}"</span>
</code></pre>
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