Iterate over array content without knowing the keys values

Question

Can someone tell me how to iterate over array keys without knowing their values ? For example:

array:3 [▼
  "name" => "AccountId"
  "activated" => "false"
  "type" => "string"
]

I'd like to get a select list with:

<select name="select">
  <option>name: AccountId</option>
  <option>activated: false</option>
  <option>type: string</option>
</select>

k0pernikus · Accepted Answer · 2016-03-10 09:45:15Z

5

You can Iterating over Keys and Values as described in the doc, as example:

<select name="select">
    {% for key, value in users %}
       < option > {{ key }}: {{ value }}</option >
    {% endfor %}
</select>

edited Mar 10, 2016 at 9:45

k0pernikus

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answered Mar 10, 2016 at 9:36

Matteo

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3 Comments

Joey Pablo Over a year ago

Thank you for your answer ! can you please tell me about this error ? Key "key" doesn't exist ? why it doesn't take the value of key instead of "key" <select name="select"> {% for key,value in array %} {% if (key != 'id') and (key != 'type') %} <option value={{key}}>{{ array.key }}</option> {% endif %} {% endfor %} </select>

Matteo Over a year ago

uhmm seems due to the {{ array.key }} try with {{ value }} as described in the provided answer

Joey Pablo Over a year ago

Well actually your answer helped me to write the for loop but in my page 'value' is an array so I thought that I could access to its attributes by the doing value.key but it doesn't work when it dynamically ( if i do value.type it works )

Artamiel · Accepted Answer · 2016-03-10 09:36:28Z

3

Something like this should do the trick:

<select>
    {% for key, value in data %}
        <option>{{ key }}: {{ value }}</option>
    {% endfor %}
</select>

You can read more about for loop in Twig's documentation.

answered Mar 10, 2016 at 9:36

Artamiel

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