jeton inattendu et JSON lorsque l'objet de l'analyse syntaxique chaîne

Question

j'ai essayé d'analyser les données de carte elixir converti en JSON en utilisant Poison.encode(), en tout cas, je me suis erreur:

Unexpected token & in JSON at position 1 

Comment échapper à double citations à l'intérieur de cette chaîne, pour éviter d'ajouter "&quote;"?

données initiales:

%{"node_10_10@172.17.0.11" => ["40000000-5fffffff", "a0000000-bfffffff"], 
    "node_1_10@172.17.0.2" => ["20000000-3fffffff", "a0000000-bfffffff"], 
    "node_2_10@172.17.0.3" => ["20000000-3fffffff", "80000000-9fffffff"], 
    "node_3_10@172.17.0.4" => ["20000000-3fffffff", "80000000-9fffffff", 
    "e0000000-ffffffff"], 
    "node_4_10@172.17.0.5" => ["00000000-1fffffff", "80000000-9fffffff", 
    "e0000000-ffffffff"], 
    "node_5_10@172.17.0.6" => ["00000000-1fffffff", "60000000-7fffffff", 
    "e0000000-ffffffff"], 
    "node_6_10@172.17.0.7" => ["00000000-1fffffff", "60000000-7fffffff", 
    "c0000000-dfffffff"], 
    "node_7_10@172.17.0.8" => ["60000000-7fffffff", "c0000000-dfffffff"], 
    "node_8_10@172.17.0.9" => ["40000000-5fffffff", "c0000000-dfffffff"], 
    "node_9_10@172.17.0.10" => ["40000000-5fffffff", "a0000000-bfffffff"]} 

mappées à la nouvelle structure, en utilisant cette méthode dans le contrôleur:

defp map_shards(nodes, :nodes), do: %{"nodes": Enum.map(nodes, fn{k, v} -> %{"node": k, "shards": v} end)}  

Appel à l'intérieur action index:

nodes = map_shards(resp["by_node"], :nodes) 

Maintenant, j'ai carte comme cela :

%{nodes: [%{node: "node_10_10@172.17.0.11", shards: ["40000000-5fffffff", "a0000000-bfffffff"]}, %{node: "node_1_10@172.17.0.2", shards: ["20000000-3fffffff", "a0000000-bfffffff"]}, %{node: "node_2_10@172.17.0.3", shards: ["20000000-3fffffff", "80000000-9fffffff"]}, %{node: "node_3_10@172.17.0.4", shards: ["20000000-3fffffff", "80000000-9fffffff", "e0000000-ffffffff"]}, %{node: "node_4_10@172.17.0.5", shards: ["00000000-1fffffff", "80000000-9fffffff", "e0000000-ffffffff"]}, %{node: "node_5_10@172.17.0.6", shards: ["00000000-1fffffff", "60000000-7fffffff", "e0000000-ffffffff"]}, %{node: "node_6_10@172.17.0.7", shards: ["00000000-1fffffff", "60000000-7fffffff", "c0000000-dfffffff"]}, %{node: "node_7_10@172.17.0.8", shards: ["60000000-7fffffff", "c0000000-dfffffff"]}, %{node: "node_8_10@172.17.0.9", shards: ["40000000-5fffffff", "c0000000-dfffffff"]}, %{node: "node_9_10@172.17.0.10", shards: ["40000000-5fffffff", "a0000000-bfffffff"]}]} 

Code JS, avec appel analyseur à l'intérieur modèle .eex:

var theData = ("<%= Poison.Encoder.encode(@nodes, []) %>"); 
theData = JSON.parse(theData); 

Ce que je vois dans la console JS:

var theData = ("{"nodes":[{"shards":["40000000-5fffffff","a0000000-bfffffff"],"node":"node_10_10@172.17.0.11"},{"shards":["20000000-3fffffff","a0000000-bfffffff"],"node":"node_1_10@172.17.0.2"},{"shards":["20000000-3fffffff","80000000-9fffffff"],"node":"node_2_10@172.17.0.3"},{"shards":["20000000-3fffffff","80000000-9fffffff","e0000000-ffffffff"],"node":"node_3_10@172.17.0.4"},{"shards":["00000000-1fffffff","80000000-9fffffff","e0000000-ffffffff"],"node":"node_4_10@172.17.0.5"},{"shards":["00000000-1fffffff","60000000-7fffffff","e0000000-ffffffff"],"node":"node_5_10@172.17.0.6"},{"shards":["00000000-1fffffff","60000000-7fffffff","c0000000-dfffffff"],"node":"node_6_10@172.17.0.7"},{"shards":["60000000-7fffffff","c0000000-dfffffff"],"node":"node_7_10@172.17.0.8"},{"shards":["40000000-5fffffff","c0000000-dfffffff"],"node":"node_8_10@172.17.0.9"},{"shards":["40000000-5fffffff","a0000000-bfffffff"],"node":"node_9_10@172.17.0.10"}]}"); 

theData = JSON.parse (theData);

Answer 1

Vous devez désactiver l'échappement HTML automatique lors de l'injection de JSON codé comme cela. Vous n'avez pas besoin non plus des " environnants ou des crochets.

var theData = <%= raw Poison.Encoder.encode(@nodes, []) %>; 

Il n'y a pas besoin d'appeler JSON.parse plus, theData sera réglé sur la valeur elle-même, pas une chaîne contenant un JSON.