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I'm new to drupal 7.

I've create a custom field with extra columns via field api, and create the field well(via UI), but I can't "save" it while using the field.

I've google for it and found some keywords like

hook_field_storage_write()、hook_field_attach_submit()

But still can't get what I want. Can someone give me advices?

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Can you provide more details how did you implement schema, widget, formatter etc. I guess this link can be helpful for you http://www.slideshare.net/zugec/fields-in-core-how-to-create-a-custom-field

  • [schema]: using hook_field_schema, with 4 extra columns in .install files and MigrateFieldHandler in .module [widget]: one column, #type=>textfield [formatter]: hyperlink (function l) – whc Mar 25 '16 at 1:37
  • great) what was the problem? – smile Mar 25 '16 at 21:11
  • I can't insert values in my custom field until I found hook_node_presave() – whc Mar 26 '16 at 11:01

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