Error saving data from 'custom fields' of type select / checkbox (multiple) in Attachment Modal

[fobiaxx]

It's my first ticket, and I have little idea of English, I apologize if I did wrong.

The method used to save the custom fields in the Attache modal, I think, is poorly implemented. The problem comes when you have a field of multiple type (select or checkbox). At the time of parsing the form, the jQuery serializeArray function is used. This returns an array of key / value objects with all the items in the form.

The moment you have a field of multiple type whose name value has '[]', if there are multiple values selected, they are overwritten with the selected item from the list of elements.

Error is located in the _.each of line 72 of the file:

https://core.trac.wordpress.org/browser/trunk/src/js/media/views/attachment-compat.js

65  save: function( event ) {
66    var data = {};
67	
68    if ( event ) {
69      event.preventDefault();
70    }
71	
72    _.each( **this.$el.serializeArray()**, function( pair ) {
73      data[ pair.name ] = pair.value;
74    });
75	
76    this.controller.trigger( 'attachment:compat:waiting', ['waiting'] );
77    this.model.saveCompat( data ).always( _.bind( this.postSave, this ) );
78  },

The result of serializeArray () is

And the result after the _.each is:

As you can see, it deletes all the elements previous to the last one of the same key.

I think the best way to fix it is this:

65  save: function( event ) {
66    var data = {};
67	
68    if ( event ) {
69      event.preventDefault();
70    }
71	
72    _.each( this.$el.serializeArray(), function( pair ) {
73      if ( $.trim( pair.name ).length ) {
74        if ( typeof( data[ pair.name ] ) == 'object' ) {
75          data[ pair.name ].push( pair.value );
76        } else if ( pair.name.indexOf( '[]' ) > -1 ) {
77          data[ pair.name ] = new Array( pair.value );
78        } else {
79          data[ pair.name ] = pair.value;
80        }
81      }
82    });
83	
84    this.controller.trigger( 'attachment:compat:waiting', ['waiting'] );
85    this.model.saveCompat( data ).always( _.bind( this.postSave, this ) );
86  },

By doing this, it would return the following data object:

I explained? I'm very sorry for my English ...

Fernando.

[joemcgill]

Hi @fobiaxx,

Welcome to Trac! Thanks for the detailed report and for providing a possible solution.