GF Function Calls

I'm not 100% sure what you are trying to do.

If you are working on a form that creates a post, only the fields in the Post Fields toolbox will create Post data. See this screenshot: http://i.imgur.com/02Vyg.png

So you would add a Title and Body field to your form for the Post Title and Post Body. Edit and configure their options. Then if you want to populate a Custom Field you would add a Custom Field from the Post Fields toolbox for each custom field you want to create.

When you add a Custom Field to your form you can edit it and choose what kind of field it is. You also configure the custom field name (meta key) used to store the custom field. You choose from existing values or you can type in a new value.

When the form is submitted those fields will be used to create a post based on the settings you configured.

Why do you need 2 fields to handle that? The Post Fields you add to your form are already going to be captured with the entry data and viewable as part of the entry. So i'm not entirely sure why you need to add 2 fields and populate the 2nd with the value of the 1st.

I'm still not entirely sure what you are trying to do. The Simple Text field is just a text input. The Custom Field can also be configured as a text input. The only difference is the Custom Field data gets used to create a custom field when the form creates a post.

What you want to do is possible using the content template functionality of the Custom Field that is available in the Post Fields toolbox.

- Add a Single Input field to your form, give it a field label of whatever you want.
- Add a Custom Field from the Post fields to your form, give it a field label of whatever you want.
- Save your form
- Select continue editing
- Now edit the Custom Field you added
- For Custom Field Name and choose an existing custom field name or select New and type in the name. This is the key that is used to store that custom field. It should not contain any spaces or special characters.
- Check the "Create content template" checkbox
- Clear the value of the content template so it is empty. Now in the "Insert form field" drop down above it, select the Single Input field you want to populate the value of this custom field with. See this screenshot: http://i.imgur.com/BSxBe.png
- Select the Advanced tab
- Select "Admin Only" under visibility
- Save your form

If you followed the steps above properly, when you submit the form that Custom Field will be hidden and it will be populated with the value of the other Single Input Field on your form when the post is created.

But again, I don't see why you need to do this with 2 fields. Having one field that simply populates another is redundant.

The problem is how you are describing things it isn't clear what you are asking.

If you want to dynamically populate a form field with the value of a custom field you can use the Default Value option under the Advanced tab when editing the field you want to populate and enter a merge tag for the custom field you want to use to populate the field value with.

Here is a forum post that discusses something similar:

http://www.gravityhelp.com/forums/topic/get-routing-email-address-via-post-custom-field#post-32303

That forum post doesn't do EXACTLY what you want to do, but it does something very similar. It explains how to populate the value of a form field using a custom field value from the post the form is displayed on.

Along with using merge tags in the default value of a field, you can dynamically populate form fields using PHP or by passing data to the page via the query string.

You can find a bunch of tutorials on how to dynamically populate fields in the How To section of the Documentation here:

http://www.gravityhelp.com/documentation/page/How_To