Body: <p>I am looking to create a plugin which will update a field in a section when I save an entry.</p>
  
  <p>I will be getting the length of an MP3 file (using FFMPEG) I upload via assets and output the time to another input.</p>
  
  <p>I can listen out for the <code>onSaveEntry</code> event, but I am unfamiliar with getting and putting data in a craft plugin.</p>
  
  <p>Any help would be appreciated.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-10-21T15:59:02.940Z
Comments.Text: This is a pretty broad question... have you had a go through the plugin docs? http://buildwithcraft.com/docs/plugins/introduction I feel like between that and existing questions/answers here on Stack Exchange you'll find all the answers to get you there.
Comments.UserDisplayName: Brad Bell
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-10-21T19:18:04.880Z
Comments.Text: Thanks Brad. If there is a plugin which does something similar I can work with that. All I need to know is how to get the field data from a section when I save an entry and then add that data to a field before the save. I will take a look at and see if I can find the answer. I did take a look before
Comments.UserDisplayName: zizther
Tags: <plugin-development><field><sections>
Title: How to create a plugin which will update a field in a section when an entry is saved
ThreadText: # How to create a plugin which will update a field in a section when an entry is saved
  
  (Asked by: username_0 on 2015-10-21)
  
  I am looking to create a plugin which will update a field in a section when I save an entry.
  
  I will be getting the length of an MP3 file (using FFMPEG) I upload via assets and output the time to another input.
  
  I can listen out for the `onSaveEntry` event, but I am unfamiliar with getting and putting data in a craft plugin.
  
  Any help would be appreciated.
  
  **Tags:** plugin-development, field, sections
  
  > **Comments:**
  > **username_1**: This is a pretty broad question... have you had a go through the plugin docs? http://buildwithcraft.com/docs/plugins/introduction I feel like between that and existing questions/answers here on Stack Exchange you'll find all the answers to get you there.  
  > **username_0**: Thanks username_1. If there is a plugin which does something similar I can work with that. All I need to know is how to get the field data from a section when I save an entry and then add that data to a field before the save. I will take a look at and see if I can find the answer. I did take a look before  
  
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  ## 0 answers
  
  